Pin psutil to latest version 5.3.1

[pyup-bot]

psutil is not pinned to a specific version.

I'm pinning it to the latest version 5.3.1 for now.

These links might come in handy: PyPI | Changelog | Repo | Docs

Changelog

5.3.1

=====

Enhancements

• 1124_: documentation moved to http://psutil.readthedocs.io

Big fixes

• 1105_: [FreeBSD] psutil does not compile on FreeBSD 12.
• 1125_: [BSD] net_connections() raises TypeError.

Compatibility notes

• 1120_: .exe files for Windows are no longer uploaded on PYPI as per PEP-527;
  only wheels are provided.

2017-09-01

5.3.0

=====

Enhancements

• 802_: disk_io_counters() and net_io_counters() numbers no longer wrap
  (restart from 0). Introduced a new "nowrap" argument.
• 928_: psutil.net_connections() and psutil.Process.connections() "laddr" and
  "raddr" are now named tuples.
• 1015_: swap_memory() now relies on /proc/meminfo instead of sysinfo() syscall
  so that it can be used in conjunction with PROCFS_PATH in order to retrieve
  memory info about Linux containers such as Docker and Heroku.
• 1022_: psutil.users() provides a new "pid" field.
• 1025_: process_iter() accepts two new parameters in order to invoke
  Process.as_dict(): "attrs" and "ad_value". With this you can iterate over all
  processes in one shot without needing to catch NoSuchProcess and do list/dict
  comprehensions.
• 1040_: implemented full unicode support.
• 1051_: disk_usage() on Python 3 is now able to accept bytes.
• 1058_: test suite now enables all warnings by default.
• 1060_: source distribution is dynamically generated so that it only includes
  relevant files.
• 1079_: [FreeBSD] net_connections()'s fd number is now being set for real
  (instead of -1). (patch by Gleb Smirnoff)
• 1091_: [SunOS] implemented Process.environ(). (patch by Oleksii Shevchuk)

Bug fixes

• 989_: [Windows] boot_time() may return a negative value.
• 1007_: [Windows] boot_time() can have a 1 sec fluctuation between calls; the
  value of the first call is now cached so that boot_time() always returns the
  same value if fluctuation is <= 1 second.
• 1013_: [FreeBSD] psutil.net_connections() may return incorrect PID. (patch
  by Gleb Smirnoff)
• 1014_: [Linux] Process class can mask legitimate ENOENT exceptions as
  NoSuchProcess.
• 1016_: disk_io_counters() raises RuntimeError on a system with no disks.
• 1017_: net_io_counters() raises RuntimeError on a system with no network
  cards installed.
• 1021_: [Linux] open_files() may erroneously raise NoSuchProcess instead of
  skipping a file which gets deleted while open files are retrieved.
• 1029_: [OSX, FreeBSD] Process.connections('unix') on Python 3 doesn't
  properly handle unicode paths and may raise UnicodeDecodeError.
• 1033_: [OSX, FreeBSD] memory leak for net_connections() and
  Process.connections() when retrieving UNIX sockets (kind='unix').
• 1040_: fixed many unicode related issues such as UnicodeDecodeError on
  Python 3 + UNIX and invalid encoded data on Windows.
• 1042_: [FreeBSD] psutil won't compile on FreeBSD 12.
• 1044_: [OSX] different Process methods incorrectly raise AccessDenied for
  zombie processes.
• 1046_: [Windows] disk_partitions() on Windows overrides user's SetErrorMode.
• 1047_: [Windows] Process username(): memory leak in case exception is thrown.
• 1048_: [Windows] users()'s host field report an invalid IP address.
• 1050_: [Windows] Process.memory_maps memory() leaks memory.
• 1055_: cpu_count() is no longer cached; this is useful on systems such as
  Linux where CPUs can be disabled at runtime. This also reflects on
  Process.cpu_percent() which no longer uses the cache.
• 1058_: fixed Python warnings.
• 1062_: disk_io_counters() and net_io_counters() raise TypeError if no disks
  or NICs are installed on the system.
• 1063_: [NetBSD] net_connections() may list incorrect sockets.
• 1064_: [NetBSD] swap_memory() may segfault in case of error.
• 1065_: [OpenBSD] Process.cmdline() may raise SystemError.
• 1067_: [NetBSD] Process.cmdline() leaks memory if process has terminated.
• 1069_: [FreeBSD] Process.cpu_num() may return 255 for certain kernel
  processes.
• 1071_: [Linux] cpu_freq() may raise IOError on old RedHat distros.
• 1074_: [FreeBSD] sensors_battery() raises OSError in case of no battery.
• 1075_: [Windows] net_if_addrs(): inet_ntop() return value is not checked.
• 1077_: [SunOS] net_if_addrs() shows garbage addresses on SunOS 5.10.
  (patch by Oleksii Shevchuk)
• 1077_: [SunOS] net_connections() does not work on SunOS 5.10. (patch by
  Oleksii Shevchuk)
• 1079_: [FreeBSD] net_connections() didn't list locally connected sockets.
  (patch by Gleb Smirnoff)
• 1085_: cpu_count() return value is now checked and forced to None if <= 1.
• 1087_: Process.cpu_percent() guard against cpu_count() returning None and
  assumes 1 instead.
• 1093_: [SunOS] memory_maps() shows wrong 64 bit addresses.
• 1094_: [Windows] psutil.pid_exists() may lie. Also, all process APIs relying
  on OpenProcess Windows API now check whether the PID is actually running.
• 1098_: [Windows] Process.wait() may erroneously return sooner, when the PID
  is still alive.
• 1099_: [Windows] Process.terminate() may raise AccessDenied even if the
  process already died.
• 1101_: [Linux] sensors_temperatures() may raise ENODEV.

Porting notes

• 1039_: returned types consolidation:
• Windows / Process.cpu_times(): fields 3 and 4 were int instead of float
• Linux / FreeBSD: connections('unix'): raddr is now set to "" instead of
  None
• OpenBSD: connections('unix'): laddr and raddr are now set to "" instead of
  None
• 1040_: all strings are encoded by using OS fs encoding.
• 1040_: the following Windows APIs on Python 2 now return a string instead of
  unicode:
• Process.memory_maps().path
• WindowsService.bin_path()
• WindowsService.description()
• WindowsService.display_name()
• WindowsService.username()

2017-04-10

5.2.2

=====

Bug fixes

• 1000_: fixed some setup.py warnings.
• 1002_: [SunOS] remove C macro which will not be available on new Solaris
  versions. (patch by Danek Duvall)
• 1004_: [Linux] Process.io_counters() may raise ValueError.
• 1006_: [Linux] cpu_freq() may return None on some Linux versions does not
  support the function; now the function is not declared instead.
• 1009_: [Linux] sensors_temperatures() may raise OSError.
• 1010_: [Linux] virtual_memory() may raise ValueError on Ubuntu 14.04.

2017-03-24

5.2.1

=====

Bug fixes

• 981_: [Linux] cpu_freq() may return an empty list.
• 993_: [Windows] Process.memory_maps() on Python 3 may raise
  UnicodeDecodeError.
• 996_: [Linux] sensors_temperatures() may not show all temperatures.
• 997_: [FreeBSD] virtual_memory() may fail due to missing sysctl parameter on
  FreeBSD 12.

2017-03-05

5.2.0

=====

Enhancements

• 971_: [Linux] Add psutil.sensors_fans() function. (patch by Nicolas Hennion)
• 976_: [Windows] Process.io_counters() has 2 new fields: other_count and
  other_bytes.
• 976_: [Linux] Process.io_counters() has 2 new fields: read_chars and
  write_chars.

Bug fixes

• 872_: [Linux] can now compile on Linux by using MUSL C library.
• 985_: [Windows] Fix a crash in Process.open_files when the worker thread for NtQueryObject times out.
• 986_: [Linux] Process.cwd() may raise NoSuchProcess instead of ZombieProcess.

5.1.3

=====

Bug fixes

• 971_: [Linux] sensors_temperatures() didn't work on CentOS 7.
• 973_: cpu_percent() may raise ZeroDivisionError.

5.1.2

=====

2017-02-03

Bug fixes

• 966_: [Linux] sensors_battery().power_plugged may erroneously return None on
  Python 3.
• 968_: [Linux] disk_io_counters() raises TypeError on python 3.
• 970_: [Linux] sensors_battery()'s name and label fields on Python 3 are bytes
  instead of str.

5.1.1

=====

2017-02-03

Enhancements

• 966_: [Linux] sensors_battery().percent is a float and is more precise.

Bug fixes

• 964_: [Windows] Process.username() and psutil.users() may return badly
  decoding character on Python 3.
• 965_: [Linux] disk_io_counters() may miscalculate sector size and report the
  wrong number of bytes read and written.
• 966_: [Linux] sensors_battery() may fail with "no such file error".
• 966_: [Linux] sensors_battery().power_plugged may lie.

5.1.0

=====

2017-02-01

Enhancements

• 357_: added psutil.Process.cpu_num() (what CPU a process is on).
• 371_: added psutil.sensors_temperatures() (Linux only).
• 941_: added psutil.cpu_freq() (CPU frequency).
• 955_: added psutil.sensors_battery() (Linux, Windows, only).
• 956_: cpu_affinity([]) can now be used as an alias to set affinity against
  all eligible CPUs.

Bug fixes

• 687_: [Linux] pid_exists() no longer returns True if passed a process thread
  ID.
• 948_: cannot install psutil with PYTHONOPTIMIZE=2.
• 950_: [Windows] Process.cpu_percent() was calculated incorrectly and showed
  higher number than real usage.
• 951_: [Windows] the uploaded wheels for Python 3.6 64 bit didn't work.
• 959_: psutil exception objects could not be pickled.
• 960_: Popen.wait() did not return the correct negative exit status if process
  is kill()ed by a signal.
• 961_: [Windows] WindowsService.description() may fail with
  ERROR_MUI_FILE_NOT_FOUND.

5.0.1

=====

2016-12-21

Enhancements

• 939_: tar.gz distribution went from 1.8M to 258K.
• 811_: [Windows] provide a more meaningful error message if trying to use
  psutil on unsupported Windows XP.

Bug fixes

• 609_: [SunOS] psutil does not compile on Solaris 10.
• 936_: [Windows] fix compilation error on VS 2013 (patch by Max Bélanger).
• 940_: [Linux] cpu_percent() and cpu_times_percent() was calculated
  incorrectly as "iowait", "guest" and "guest_nice" times were not properly
  taken into account.
• 944_: [OpenBSD] psutil.pids() was omitting PID 0.

5.0.0

=====

2016-11-06

Enhncements

• 799_: new Process.oneshot() context manager making Process methods around
  +2x faster in general and from +2x to +6x faster on Windows.
• 943_: better error message in case of version conflict on import.

Bug fixes

• 932_: [NetBSD] net_connections() and Process.connections() may fail without
  raising an exception.
• 933_: [Windows] memory leak in cpu_stats() and WindowsService.description().

4.4.2

=====

2016-10-26

Bug fixes

• 931_: psutil no longer compiles on Solaris.

4.4.1

=====

2016-10-25

Bug fixes

• 927_: Popen.__del__ may cause maximum recursion depth error.

4.4.0

=====

2016-10-23

Enhancements

• 874_: [Windows] net_if_addrs() returns also the netmask.
• 887_: [Linux] virtual_memory()'s 'available' and 'used' values are more
  precise and match "free" cmdline utility. "available" also takes into
  account LCX containers preventing "available" to overflow "total".
• 891_: procinfo.py script has been updated and provides a lot more info.

Bug fixes

• 514_: [OSX] possibly fix Process.memory_maps() segfault (critical!).
• 783_: [OSX] Process.status() may erroneously return "running" for zombie
  processes.
• 798_: [Windows] Process.open_files() returns and empty list on Windows 10.
• 825_: [Linux] cpu_affinity; fix possible double close and use of unopened
  socket.
• 880_: [Windows] Handle race condition inside psutil_net_connections.
• 885_: ValueError is raised if a negative integer is passed to cpu_percent()
  functions.
• 892_: [Linux] Process.cpu_affinity([-1]) raise SystemError with no error
  set; now ValueError is raised.
• 906_: [BSD] disk_partitions(all=False) returned an empty list. Now the
  argument is ignored and all partitions are always returned.
• 907_: [FreeBSD] Process.exe() may fail with OSError(ENOENT).
• 908_: [OSX, BSD] different process methods could errounesuly mask the real
  error for high-privileged PIDs and raise NoSuchProcess and AccessDenied
  instead of OSError and RuntimeError.
• 909_: [OSX] Process open_files() and connections() methods may raise
  OSError with no exception set if process is gone.
• 916_: [OSX] fix many compilation warnings.

4.3.1

=====

2016-09-01

Enhancements

• 881_: "make install" now works also when using a virtual env.

Bug fixes

• 854_: Process.as_dict() raises ValueError if passed an erroneous attrs name.
• 857_: [SunOS] Process cpu_times(), cpu_percent(), threads() amd memory_maps()
  may raise RuntimeError if attempting to query a 64bit process with a 32bit
  python. "Null" values are returned as a fallback.
• 858_: Process.as_dict() should not return memory_info_ex() because it's
  deprecated.
• 863_: [Windows] memory_map truncates addresses above 32 bits
• 866_: [Windows] win_service_iter() and services in general are not able to
  handle unicode service names / descriptions.
• 869_: [Windows] Process.wait() may raise TimeoutExpired with wrong timeout
  unit (ms instead of sec).
• 870_: [Windows] Handle leak inside psutil_get_process_data.

4.3.0

=====

2016-06-18

Enhancements

• 819_: [Linux] different speedup improvements:
  Process.ppid() is 20% faster
  Process.status() is 28% faster
  Process.name() is 25% faster
  Process.num_threads is 20% faster on Python 3

Bug fixes

• 810_: [Windows] Windows wheels are incompatible with pip 7.1.2.
• 812_: [NetBSD] fix compilation on NetBSD-5.x.
• 823_: [NetBSD] virtual_memory() raises TypeError on Python 3.
• 829_: [UNIX] psutil.disk_usage() percent field takes root reserved space
  into account.
• 816_: [Windows] fixed net_io_counter() values wrapping after 4.3GB in
  Windows Vista (NT 6.0) and above using 64bit values from newer win APIs.

4.2.0

=====

2016-05-14

Enhancements

• 795_: [Windows] new APIs to deal with Windows services: win_service_iter()
  and win_service_get().
• 800_: [Linux] psutil.virtual_memory() returns a new "shared" memory field.
• 819_: [Linux] speedup /proc parsing:
• Process.ppid() is 20% faster
• Process.status() is 28% faster
• Process.name() is 25% faster
• Process.num_threads is 20% faster on Python 3

Bug fixes

• 797_: [Linux] net_if_stats() may raise OSError for certain NIC cards.
• 813_: Process.as_dict() should ignore extraneous attribute names which gets
  attached to the Process instance.

4.1.0

=====

2016-03-12

Enhancements

• 777_: [Linux] Process.open_files() on Linux return 3 new fields: position,
  mode and flags.
• 779_: Process.cpu_times() returns two new fields, 'children_user' and
  'children_system' (always set to 0 on OSX and Windows).
• 789_: [Windows] psutil.cpu_times() return two new fields: "interrupt" and
  "dpc". Same for psutil.cpu_times_percent().
• 792_: new psutil.cpu_stats() function returning number of CPU ctx switches
  interrupts, soft interrupts and syscalls.

Bug fixes

• 774_: [FreeBSD] net_io_counters() dropout is no longer set to 0 if the kernel
  provides it.
• 776_: [Linux] Process.cpu_affinity() may erroneously raise NoSuchProcess.
  (patch by wxwright)
• 780_: [OSX] psutil does not compile with some gcc versions.
• 786_: net_if_addrs() may report incomplete MAC addresses.
• 788_: [NetBSD] virtual_memory()'s buffers and shared values were set to 0.
• 790_: [OSX] psutil won't compile on OSX 10.4.

4.0.0

=====

2016-02-17

Enhancements

• 523_: [Linux, FreeBSD] disk_io_counters() return a new "busy_time" field.
• 660_: [Windows] make.bat is smarter in finding alternative VS install
  locations. (patch by mpderbec)
• 732_: Process.environ(). (patch by Frank Benkstein)
• 753_: [Linux, OSX, Windows] Process USS and PSS (Linux) "real" memory stats.
  (patch by Eric Rahm)
• 755_: Process.memory_percent() "memtype" parameter.
• 758_: tests now live in psutil namespace.
• 760_: expose OS constants (psutil.LINUX, psutil.OSX, etc.)
• 756_: [Linux] disk_io_counters() return 2 new fields: read_merged_count and
  write_merged_count.
• 762_: new scripts/procsmem.py script.

Bug fixes

• 685_: [Linux] virtual_memory() provides wrong results on systems with a lot
  of physical memory.
• 704_: [Solaris] psutil does not compile on Solaris sparc.
• 734_: on Python 3 invalid UTF-8 data is not correctly handled for process
  name(), cwd(), exe(), cmdline() and open_files() methods resulting in
  UnicodeDecodeError exceptions. 'surrogateescape' error handler is now
  used as a workaround for replacing the corrupted data.
• 737_: [Windows] when the bitness of psutil and the target process was
  different cmdline() and cwd() could return a wrong result or incorrectly
  report an AccessDenied error.
• 741_: [OpenBSD] psutil does not compile on mips64.
• 751_: [Linux] fixed call to Py_DECREF on possible Null object.
• 754_: [Linux] cmdline() can be wrong in case of zombie process.
• 759_: [Linux] Process.memory_maps() may return paths ending with " (deleted)"
• 761_: [Windows] psutil.boot_time() wraps to 0 after 49 days.
• 764_: [NetBSD] fix compilation on NetBSD-6.x.
• 766_: [Linux] net_connections() can't handle malformed /proc/net/unix file.
• 767_: [Linux] disk_io_counters() may raise ValueError on 2.6 kernels and it's
  broken on 2.4 kernels.
• 770_: [NetBSD] disk_io_counters() metrics didn't update.

3.4.2

=====

2016-01-20

Enhancements

• 728_: [Solaris] exposed psutil.PROCFS_PATH constant to change the default
  location of /proc filesystem.

Bug fixes

• 724_: [FreeBSD] psutil.virtual_memory().total is incorrect.
• 730_: [FreeBSD] psutil.virtual_memory() crashes.

3.4.1

=====

2016-01-15

Enhancements

• 557_: [NetBSD] added NetBSD support. (contributed by Ryo Onodera and
  Thomas Klausner)
• 708_: [Linux] psutil.net_connections() and Process.connections() on Python 2
  can be up to 3x faster in case of many connections.
  Also psutil.Process.memory_maps() is slightly faster.
• 718_: process_iter() is now thread safe.

Bug fixes

• 714_: [OpenBSD] virtual_memory().cached value was always set to 0.
• 715_: don't crash at import time if cpu_times() fail for some reason.
• 717_: [Linux] Process.open_files fails if deleted files still visible.
• 722_: [Linux] swap_memory() no longer crashes if sin/sout can't be determined
  due to missing /proc/vmstat.
• 724_: [FreeBSD] virtual_memory().total is slightly incorrect.

3.3.0

=====

2015-11-25

Enhancements

• 558_: [Linux] exposed psutil.PROCFS_PATH constant to change the default
  location of /proc filesystem.
• 615_: [OpenBSD] added OpenBSD support. (contributed by Landry Breuil)

Bug fixes

• 692_: [UNIX] Process.name() is no longer cached as it may change.

3.2.2

=====

2015-10-04

Bug fixes

• 517_: [SunOS] net_io_counters failed to detect network interfaces
  correctly on Solaris 10
• 541_: [FreeBSD] disk_io_counters r/w times were expressed in seconds instead
  of milliseconds. (patch by dasumin)
• 610_: [SunOS] fix build and tests on Solaris 10
• 623_: [Linux] process or system connections raises ValueError if IPv6 is not
  supported by the system.
• 678_: [Linux] can't install psutil due to bug in setup.py.
• 688_: [Windows] compilation fails with MSVC 2015, Python 3.5. (patch by
  Mike Sarahan)

3.2.1

=====

2015-09-03

Bug fixes

• 677_: [Linux] can't install psutil due to bug in setup.py.

3.2.0

=====

2015-09-02

Enhancements

• 644_: [Windows] added support for CTRL_C_EVENT and CTRL_BREAK_EVENT signals
  to use with Process.send_signal().
• 648_: CI test integration for OSX. (patch by Jeff Tang)
• 663_: [UNIX] net_if_addrs() now returns point-to-point (VPNs) addresses.
• 655_: [Windows] different issues regarding unicode handling were fixed. On
  Python 2 all APIs returning a string will now return an encoded version of it
  by using sys.getfilesystemencoding() codec. The APIs involved are:
• psutil.net_if_addrs()
• psutil.net_if_stats()
• psutil.net_io_counters()
• psutil.Process.cmdline()
• psutil.Process.name()
• psutil.Process.username()
• psutil.users()

Bug fixes

• 513_: [Linux] fixed integer overflow for RLIM_INFINITY.
• 641_: [Windows] fixed many compilation warnings. (patch by Jeff Tang)
• 652_: [Windows] net_if_addrs() UnicodeDecodeError in case of non-ASCII NIC
  names.
• 655_: [Windows] net_if_stats() UnicodeDecodeError in case of non-ASCII NIC
  names.
• 659_: [Linux] compilation error on Suse 10. (patch by maozguttman)
• 664_: [Linux] compilation error on Alpine Linux. (patch by Bart van Kleef)
• 670_: [Windows] segfgault of net_if_addrs() in case of non-ASCII NIC names.
  (patch by sk6249)
• 672_: [Windows] compilation fails if using Windows SDK v8.0. (patch by
  Steven Winfield)
• 675_: [Linux] net_connections(); UnicodeDecodeError may occur when listing
  UNIX sockets.

3.1.1

=====

2015-07-15

Bug fixes

• 603_: [Linux] ionice_set value range is incorrect. (patch by spacewander)
• 645_: [Linux] psutil.cpu_times_percent() may produce negative results.
• 656_: 'from psutil import *' does not work.

3.1.0

=====

2015-07-15

Enhancements

• 534_: [Linux] disk_partitions() added support for ZFS filesystems.
• 646_: continuous tests integration for Windows with
  https://ci.appveyor.com/project/giampaolo/psutil.
• 647_: new dev guide:
  https://github.com/giampaolo/psutil/blob/master/DEVGUIDE.rst
• 651_: continuous code quality test integration with scrutinizer-ci.com

Bug fixes

• 340_: [Windows] Process.open_files() no longer hangs. Instead it uses a
  thred which times out and skips the file handle in case it's taking too long
  to be retrieved. (patch by Jeff Tang, PR 597)
• 627_: [Windows] Process.name() no longer raises AccessDenied for pids owned
  by another user.
• 636_: [Windows] Process.memory_info() raise AccessDenied.
• 637_: [UNIX] raise exception if trying to send signal to Process PID 0 as it
  will affect os.getpid()'s process group instead of PID 0.
• 639_: [Linux] Process.cmdline() can be truncated.
• 640_: [Linux] *connections functions may swallow errors and return an
  incomplete list of connnections.
• 642_: repr() of exceptions is incorrect.
• 653_: [Windows] Add inet_ntop function for Windows XP to support IPv6.
• 641_: [Windows] Replace deprecated string functions with safe equivalents.

3.0.1

=====

2015-06-18

Bug fixes

• 632_: [Linux] better error message if cannot parse process UNIX connections.
• 634_: [Linux] Proces.cmdline() does not include empty string arguments.
• 635_: [UNIX] crash on module import if 'enum' package is installed on python
  < 3.4.

3.0.0

=====

2015-06-13

Enhancements

• 250_: new psutil.net_if_stats() returning NIC statistics (isup, duplex,
  speed, MTU).
• 376_: new psutil.net_if_addrs() returning all NIC addresses a-la ifconfig.
• 469_: on Python >= 3.4 IOPRIO_CLASS_* and *_PRIORITY_CLASS constants
  returned by psutil.Process' ionice() and nice() methods are enums instead of
  plain integers.
• 581_: add .gitignore. (patch by Gabi Davar)
• 582_: connection constants returned by psutil.net_connections() and
  psutil.Process.connections() were turned from int to enums on Python > 3.4.
• 587_: Move native extension into the package.
• 589_: Process.cpu_affinity() accepts any kind of iterable (set, tuple, ...),
  not only lists.
• 594_: all deprecated APIs were removed.
• 599_: [Windows] process name() can now be determined for all processes even
  when running as a limited user.
• 602_: pre-commit GIT hook.
• 629_: enhanced support for py.test and nose test discovery and tests run.
• 616_: [Windows] Add inet_ntop function for Windows XP.

Bug fixes

• 428_: [all UNIXes except Linux] correct handling of zombie processes;
  introduced new ZombieProcess exception class.
• 512_: [BSD] fix segfault in net_connections().
• 555_: [Linux] psutil.users() correctly handles ":0" as an alias for
  "localhost"
• 579_: [Windows] Fixed open_files() for PID>64K.
• 579_: [Windows] fixed many compiler warnings.
• 585_: [FreeBSD] net_connections() may raise KeyError.
• 586_: [FreeBSD] cpu_affinity() segfaults on set in case an invalid CPU
  number is provided.
• 593_: [FreeBSD] Process().memory_maps() segfaults.
• 606_: Process.parent() may swallow NoSuchProcess exceptions.
• 611_: [SunOS] net_io_counters has send and received swapped
• 614_: [Linux]: cpu_count(logical=False) return the number of physical CPUs
  instead of physical cores.
• 618_: [SunOS] swap tests fail on Solaris when run as normal user
• 628_: [Linux] Process.name() truncates process name in case it contains
  spaces or parentheses.

2.2.1

=====

2015-02-02

Bug fixes

• 496_: [Linux] fix "ValueError: ambiguos inode with multiple PIDs references"
  (patch by Bruno Binet)

2.2.0

=====

2015-01-06

Enhancements

• 521_: drop support for Python 2.4 and 2.5.
• 553_: new examples/pstree.py script.
• 564_: C extension version mismatch in case the user messed up with psutil
  installation or with sys.path is now detected at import time.
• 568_: New examples/pidof.py script.
• 569_: [FreeBSD] add support for process CPU affinity.

Bug fixes

• 496_: [Solaris] can't import psutil.
• 547_: [UNIX] Process.username() may raise KeyError if UID can't be resolved.
• 551_: [Windows] get rid of the unicode hack for net_io_counters() NIC names.
• 556_: [Linux] lots of file handles were left open.
• 561_: [Linux] net_connections() might skip some legitimate UNIX sockets.
  (patch by spacewander)
• 565_: [Windows] use proper encoding for psutil.Process.username() and
  psutil.users(). (patch by Sylvain Mouquet)
• 567_: [Linux] in the alternative implementation of CPU affinity PyList_Append
  and Py_BuildValue return values are not checked.
• 569_: [FreeBSD] fix memory leak in psutil.cpu_count(logical=False).
• 571_: [Linux] Process.open_files() might swallow AccessDenied exceptions and
  return an incomplete list of open files.

2.1.3

=====

2014-09-26

• 536_: [Linux]: fix "undefined symbol: CPU_ALLOC" compilation error.

2.1.2

=====

2014-09-21

Enhancements

• 407_: project moved from Google Code to Github; code moved from Mercurial
  to Git.
• 492_: use tox to run tests on multiple python versions. (patch by msabramo)
• 505_: [Windows] distribution as wheel packages.
• 511_: new examples/ps.py sample code.

Bug fixes

• 340_: [Windows] Process.get_open_files() no longer hangs. (patch by
  Jeff Tang)
• 501_: [Windows] disk_io_counters() may return negative values.
• 503_: [Linux] in rare conditions Process exe(), open_files() and
  connections() methods can raise OSError(ESRCH) instead of NoSuchProcess.
• 504_: [Linux] can't build RPM packages via setup.py
• 506_: [Linux] python 2.4 support was broken.
• 522_: [Linux] Process.cpu_affinity() might return EINVAL. (patch by David
  Daeschler)
• 529_: [Windows] Process.exe() may raise unhandled WindowsError exception
  for PIDs 0 and 4. (patch by Jeff Tang)
• 530_: [Linux] psutil.disk_io_counters() may crash on old Linux distros
  (< 2.6.5) (patch by Yaolong Huang)
• 533_: [Linux] Process.memory_maps() may raise TypeError on old Linux distros.

2.1.1

=====

2014-04-30

Bug fixes

• 446_: [Windows] fix encoding error when using net_io_counters() on Python 3.
  (patch by Szigeti Gabor Niif)
• 460_: [Windows] net_io_counters() wraps after 4G.
• 491_: [Linux] psutil.net_connections() exceptions. (patch by Alexander Grothe)

2.1.0

=====

2014-04-08

Enhancements

• 387_: system-wide open connections a-la netstat.

Bug fixes

• 421_: [Solaris] psutil does not compile on SunOS 5.10 (patch by Naveed
  Roudsari)
• 489_: [Linux] psutil.disk_partitions() return an empty list.

2.0.0

=====

2014-03-10

Enhancements

• 424_: [Windows] installer for Python 3.X 64 bit.
• 427_: number of logical and physical CPUs (psutil.cpu_count()).
• 447_: psutil.wait_procs() timeout parameter is now optional.
• 452_: make Process instances hashable and usable with set()s.
• 453_: tests on Python < 2.7 require unittest2 module.
• 459_: add a make file for running tests and other repetitive tasks (also
  on Windows).
• 463_: make timeout parameter of cpu_percent* functions default to 0.0 'cause
  it's a common trap to introduce slowdowns.
• 468_: move documentation to readthedocs.com.
• 477_: process cpu_percent() is about 30% faster. (suggested by crusaderky)
• 478_: [Linux] almost all APIs are about 30% faster on Python 3.X.
• 479_: long deprecated psutil.error module is gone; exception classes now
  live in "psutil" namespace only.

Bug fixes

• 193_: psutil.Popen constructor can throw an exception if the spawned process
  terminates quickly.
• 340_: [Windows] process get_open_files() no longer hangs. (patch by
  jtangvahna.net)
• 443_: [Linux] fix a potential overflow issue for Process.set_cpu_affinity()
  on systems with more than 64 CPUs.
• 448_: [Windows] get_children() and ppid() memory leak (patch by Ulrich
  Klank).
• 457_: [POSIX] pid_exists() always returns True for PID 0.
• 461_: namedtuples are not pickle-able.
• 466_: [Linux] process exe improper null bytes handling. (patch by
  Gautam Singh)
• 470_: wait_procs() might not wait. (patch by crusaderky)
• 471_: [Windows] process exe improper unicode handling. (patch by
  alexmroja.net)
• 473_: psutil.Popen.wait() does not set returncode attribute.
• 474_: [Windows] Process.cpu_percent() is no longer capped at 100%.
• 476_: [Linux] encoding error for process name and cmdline.

API changes

For the sake of consistency a lot of psutil APIs have been renamed.
In most cases accessing the old names will work but it will cause a
DeprecationWarning.

• psutil.* module level constants have being replaced by functions:

+-----------------------+-------------------------------+
| Old name | Replacement |
+=======================+===============================+
| psutil.NUM_CPUS | psutil.cpu_cpunt() |
+-----------------------+-------------------------------+
| psutil.BOOT_TIME | psutil.boot_time() |
+-----------------------+-------------------------------+
| psutil.TOTAL_PHYMEM | psutil.virtual_memory().total |
+-----------------------+-------------------------------+

• Renamed psutil.* functions:

+--------------------------+-------------------------------+
| Old name | Replacement |
+==========================+===============================+
| - psutil.get_pid_list() | psutil.pids() |
+--------------------------+-------------------------------+
| - psutil.get_users() | psutil.users() |
+--------------------------+-------------------------------+
| - psutil.get_boot_time() | psutil.boot_time() |
+--------------------------+-------------------------------+

• All psutil.Process get_* methods lost the get_ prefix.
  get_ext_memory_info() renamed to memory_info_ex().
  Assuming "p = psutil.Process()":

+--------------------------+----------------------+
| Old name | Replacement |
+==========================+======================+
| p.get_children() | p.children() |
+--------------------------+----------------------+
| p.get_connections() | p.connections() |
+--------------------------+----------------------+
| p.get_cpu_affinity() | p.cpu_affinity() |
+--------------------------+----------------------+
| p.get_cpu_percent() | p.cpu_percent() |
+--------------------------+----------------------+
| p.get_cpu_times() | p.cpu_times() |
+--------------------------+----------------------+
| p.get_ext_memory_info() | p.memory_info_ex() |
+--------------------------+----------------------+
| p.get_io_counters() | p.io_counters() |
+--------------------------+----------------------+
| p.get_ionice() | p.ionice() |
+--------------------------+----------------------+
| p.get_memory_info() | p.memory_info() |
+--------------------------+----------------------+
| p.get_memory_maps() | p.memory_maps() |
+--------------------------+----------------------+
| p.get_memory_percent() | p.memory_percent() |
+--------------------------+----------------------+
| p.get_nice() | p.nice() |
+--------------------------+----------------------+
| p.get_num_ctx_switches() | p.num_ctx_switches() |
+--------------------------+----------------------+
| p.get_num_fds() | p.num_fds() |
+--------------------------+----------------------+
| p.get_num_threads() | p.num_threads() |
+--------------------------+----------------------+
| p.get_open_files() | p.open_files() |
+--------------------------+----------------------+
| p.get_rlimit() | p.rlimit() |
+--------------------------+----------------------+
| p.get_threads() | p.threads() |
+--------------------------+----------------------+
| p.getcwd() | p.cwd() |
+--------------------------+----------------------+

• All psutil.Process set_* methods lost the set_ prefix.
  Assuming "p = psutil.Process()":

+----------------------+---------------------------------+
| Old name | Replacement |
+======================+=================================+
| p.set_nice() | p.nice(value) |
+----------------------+---------------------------------+
| p.set_ionice() | p.ionice(ioclass, value=None) |
+----------------------+---------------------------------+
| p.set_cpu_affinity() | p.cpu_affinity(cpus) |
+----------------------+---------------------------------+
| p.set_rlimit() | p.rlimit(resource, limits=None) |
+----------------------+---------------------------------+

• Except for 'pid' all psutil.Process class properties have been turned into
  methods. This is the only case which there are no aliases.
  Assuming "p = psutil.Process()":

+---------------+-----------------+
| Old name | Replacement |
+===============+=================+
| p.name | p.name() |
+---------------+-----------------+
| p.parent | p.parent() |
+---------------+-----------------+
| p.ppid | p.ppid() |
+---------------+-----------------+
| p.exe | p.exe() |
+---------------+-----------------+
| p.cmdline | p.cmdline() |
+---------------+-----------------+
| p.status | p.status() |
+---------------+-----------------+
| p.uids | p.uids() |
+---------------+-----------------+
| p.gids | p.gids() |
+---------------+-----------------+
| p.username | p.username() |
+---------------+-----------------+
| p.create_time | p.create_time() |
+---------------+-----------------+

• timeout parameter of cpu_percent* functions defaults to 0.0 instead of 0.1.
• long deprecated psutil.error module is gone; exception classes now live in
  "psutil" namespace only.
• Process instances' "retcode" attribute returned by psutil.wait_procs() has
  been renamed to "returncode" for consistency with subprocess.Popen.

1.2.1

=====

2013-11-25

Bug fixes

• 348_: [Windows XP] fixed "ImportError: DLL load failed" occurring on module
  import.
• 425_: [Solaris] crash on import due to failure at determining BOOT_TIME.
• 443_: [Linux] can't set CPU affinity on systems with more than 64 cores.

1.2.0

=====

2013-11-20

Enhancements

• 439_: assume os.getpid() if no argument is passed to psutil.Process
  constructor.
• 440_: new psutil.wait_procs() utility function which waits for multiple
  processes to terminate.

Bug fixes

• 348_: [Windows XP/Vista] fix "ImportError: DLL load failed" occurring on
  module import.

1.1.3

=====

2013-11-07

Bug fixes

• 442_: [Linux] psutil won't compile on certain version of Linux because of
  missing prlimit(2) syscall.

1.1.2

=====

2013-10-22

Bug fixes

• 442_: [Linux] psutil won't compile on Debian 6.0 because of missing
  prlimit(2) syscall.

1.1.1

=====

2013-10-08

Bug fixes

• 442_: [Linux] psutil won't compile on kernels < 2.6.36 due to missing
  prlimit(2) syscall.

1.1.0

=====

2013-09-28

Enhancements

• 410_: host tar.gz and windows binary files are on PYPI.
• 412_: [Linux] get/set process resource limits.
• 415_: [Windows] Process.get_children() is an order of magnitude faster.
• 426_: [Windows] Process.name is an order of magnitude faster.
• 431_: [UNIX] Process.name is slightly faster because it unnecessarily
  retrieved also process cmdline.

Bug fixes

• 391_: [Windows] psutil.cpu_times_percent() returns negative percentages.
• 408_: STATUS_* and CONN_* constants don't properly serialize on JSON.
• 411_: [Windows] examples/disk_usage.py may pop-up a GUI error.
• 413_: [Windows] Process.get_memory_info() leaks memory.
• 414_: [Windows] Process.exe on Windows XP may raise ERROR_INVALID_PARAMETER.
• 416_: psutil.disk_usage() doesn't work well with unicode path names.
• 430_: [Linux] process IO counters report wrong number of r/w syscalls.
• 435_: [Linux] psutil.net_io_counters() might report erreneous NIC names.
• 436_: [Linux] psutil.net_io_counters() reports a wrong 'dropin' value.

API changes

• 408_: turn STATUS_* and CONN_* constants into plain Python strings.

1.0.1

=====

2013-07-12

Bug fixes

• 405_: network_io_counters(pernic=True) no longer works as intended in 1.0.0.

1.0.0

=====

2013-07-10

Enhancements

• 18_: Solaris support (yay!) (thanks Justin Venus)
• 367_: Process.get_connections() 'status' strings are now constants.
• 380_: test suite exits with non-zero on failure. (patch by floppymaster)
• 391_: introduce unittest2 facilities and provide workarounds if unittest2
  is not installed (python < 2.7).

Bug fixes

• 374_: [Windows] negative memory usage reported if process uses a lot of
  memory.
• 379_: [Linux] Process.get_memory_maps() may raise ValueError.
• 394_: [OSX] Mapped memory regions report incorrect file name.
• 404_: [Linux] sched_*affinity() are implicitly declared. (patch by Arfrever)

API changes

• Process.get_connections() 'status' field is no longer a string but a
  constant object (psutil.CONN_*).
• Process.get_connections() 'local_address' and 'remote_address' fields
  renamed to 'laddr' and 'raddr'.
• psutil.network_io_counters() renamed to psutil.net_io_counters().

0.7.1

=====

2013-05-03

Bug fixes

• 325_: [BSD] psutil.virtual_memory() can raise SystemError.
  (patch by Jan Beich)
• 370_: [BSD] Process.get_connections() requires root. (patch by John Baldwin)
• 372_: [BSD] different process methods raise NoSuchProcess instead of
  AccessDenied.

0.7.0

=====

2013-04-12

Enhancements

• 233_: code migrated to Mercurial (yay!)
• 246_: psutil.error module is deprecated and scheduled for removal.
• 328_: [Windows] process IO nice/priority support.
• 359_: psutil.get_boot_time()
• 361_: [Linux] psutil.cpu_times() now includes new 'steal', 'guest' and
  'guest_nice' fields available on recent Linux kernels.
  Also, psutil.cpu_percent() is more accurate.
• 362_: cpu_times_percent() (per-CPU-time utilization as a percentage)

Bug fixes

• 234_: [Windows] disk_io_counters() fails to list certain disks.
• 264_: [Windows] use of psutil.disk_partitions() may cause a message box to
  appear.
• 313_: [Linux] psutil.virtual_memory() and psutil.swap_memory() can crash on
  certain exotic Linux flavors having an incomplete /proc interface.
  If that's the case we now set the unretrievable stats to 0 and raise a
  RuntimeWarning.
• 315_: [OSX] fix some compilation warnings.
• 317_: [Windows] cannot set process CPU affinity above 31 cores.
• 319_: [Linux] process get_memory_maps() raises KeyError 'Anonymous' on Debian
  squeeze.
• 321_: [UNIX] Process.ppid property is no longer cached as the kernel may set
  the ppid to 1 in case of a zombie process.
• 323_: [OSX] disk_io_counters()'s read_time and write_time parameters were
  reporting microseconds not milliseconds. (patch by Gregory Szorc)
• 331_: Process cmdline is no longer cached after first acces as it may change.
• 333_: [OSX] Leak of Mach ports on OS X (patch by rsesekgoogle.com)
• 337_: [Linux] process methods not working because of a poor /proc
  implementation will raise NotImplementedError rather than RuntimeError
  and Process.as_dict() will not blow up. (patch by Curtin1060)
• 338_: [Linux] disk_io_counters() fails to find some disks.
• 339_: [FreeBSD] get_pid_list() can allocate all the memory on system.
• 341_: [Linux] psutil might crash on import due to error in retrieving system
  terminals map.
• 344_: [FreeBSD] swap_memory() might return incorrect results due to
  kvm_open(3) not being called. (patch by Jean Sebastien)
• 338_: [Linux] disk_io_counters() fails to find some disks.
• 351_: [Windows] if psutil is compiled with mingw32 (provided installers for
  py2.4 and py2.5 are) disk_io_counters() will fail. (Patch by m.malycha)
• 353_: [OSX] get_users() returns an empty list on OSX 10.8.
• 356_: Process.parent now checks whether parent PID has been reused in which
  case returns None.
• 365_: Process.set_nice() should check PID has not been reused by another
  process.
• 366_: [FreeBSD] get_memory_maps(), get_num_fds(), get_open_files() and
  getcwd() Process methods raise RuntimeError instead of AccessDenied.

API changes

• Process.cmdline property is no longer cached after first access.
• Process.ppid property is no longer cached after first access.
• [Linux] Process methods not working because of a poor /proc implementation
  will raise NotImplementedError instead of RuntimeError.
• psutil.error module is deprecated and scheduled for removal.

0.6.1

=====

2012-08-16

Enhancements

• 316_: process cmdline property now makes a better job at guessing the process
  executable from the cmdline.

Bug fixes

• 316_: process exe was resolved in case it was a symlink.
• 318_: python 2.4 compatibility was broken.

API changes

• process exe can now return an empty string instead of raising AccessDenied.
• process exe is no longer resolved in case it's a symlink.

0.6.0

=====

2012-08-13

Enhancements

• 216_: [POSIX] get_connections() UNIX sockets support.
• 220_: [FreeBSD] get_connections() has been rewritten in C and no longer
  requires lsof.
• 222_: [OSX] add support for process cwd.
• 261_: process extended memory info.
• 295_: [OSX] process executable path is now determined by asking the OS
  instead of being guessed from process cmdline.
• 297_: [OSX] the Process methods below were always raising AccessDenied for
  any process except the current one. Now this is no longer true. Also
  they are 2.5x faster.
• name
• get_memory_info()
• get_memory_percent()
• get_cpu_times()
• get_cpu_percent()
• get_num_threads()
• 300_: examples/pmap.py script.
• 301_: process_iter() now yields processes sorted by their PIDs.
• 302_: process number of voluntary and involuntary context switches.
• 303_: [Windows] the Process methods below were always raising AccessDenied
  for any process not owned by current user. Now this is no longer true:
• create_time
• get_cpu_times()
• get_cpu_percent()
• get_memory_info()
• get_memory_percent()
• get_num_handles()
• get_io_counters()
• 305_: add examples/netstat.py script.
• 311_: system memory functions has been refactorized and rewritten and now
  provide a more detailed and consistent representation of the system
  memory. New psutil.virtual_memory() function provides the following
  memory amounts:
• total
• available
• percent
• used
• active [POSIX]
• inactive [POSIX]
• buffers (BSD, Linux)
• cached (BSD, OSX)
• wired (OSX, BSD)
• shared [FreeBSD]
  New psutil.swap_memory() provides:
• total
• used
• free
• percent
• sin (no. of bytes the system has swapped in from disk (cumulative))
• sout (no. of bytes the system has swapped out from disk (cumulative))
  All old memory-related functions are deprecated.
  Also two new example scripts were added: free.py and meminfo.py.
• 312_: psutil.network_io_counters() namedtuple includes 4 new fields:
  errin, errout dropin and dropout, reflecting the number of packets
  dropped and with errors.

Bug fixes

• 298_: [OSX and BSD] memory leak in get_num_fds().
• 299_: potential memory leak every time PyList_New(0) is used.
• 303_: [Windows] potential heap corruption in get_num_threads() and
  get_status() Process methods.
• 305_: [FreeBSD] psutil can't compile on FreeBSD 9 due to removal of utmp.h.
• 306_: at C level, errors are not checked when invoking Py* functions which
  create or manipulate Python objects leading to potential memory related
  errors and/or segmentation faults.
• 307_: [FreeBSD] values returned by psutil.network_io_counters() are wrong.
• 308_: [BSD / Windows] psutil.virtmem_usage() wasn't actually returning
  information about swap memory usage as it was supposed to do. It does
  now.
• 309_: get_open_files() might not return files which can not be accessed
  due to limited permissions. AccessDenied is now raised instead.

API changes

• psutil.phymem_usage() is deprecated (use psutil.virtual_memory())
• psutil.virtmem_usage() is deprecated (use psutil.swap_memory())
• psutil.phymem_buffers() on Linux is deprecated (use psutil.virtual_memory())
• psutil.cached_phymem() on Linux is deprecated (use psutil.virtual_memory())
• [Windows and BSD] psutil.virtmem_usage() now returns information about swap
  memory instead of virtual memory.

0.5.1

=====

2012-06-29

Enhancements

• 293_: [Windows] process executable path is now determined by asking the OS
  instead of being guessed from process cmdline.

Bug fixes

• 292_: [Linux] race condition in process files/threads/connections.
• 294_: [Windows] Process CPU affinity is only able to set CPU 0.

0.5.0

=====

2012-06-27

Enhancements

• 195_: [Windows] number of handles opened by process.
• 209_: psutil.disk_partitions() now provides also mount options.
• 229_: list users currently connected on the system (psutil.get_users()).
• 238_: [Linux, Windows] process CPU affinity (get and set).
• 242_: Process.get_children(recursive=True): return all process
  descendants.
• 245_: [POSIX] Process.wait() incrementally consumes less CPU cycles.
• 257_: [Windows] removed Windows 2000 support.
• 258_: [Linux] Process.get_memory_info() is now 0.5x faster.
• 260_: process's mapped memory regions. (Windows patch by wj32.64, OSX patch
  by Jeremy Whitlock)
• 262_: [Windows] psutil.disk_partitions() was slow due to inspecting the
  floppy disk drive also when "all" argument was False.
• 273_: psutil.get_process_list() is deprecated.
• 274_: psutil no longer requires 2to3 at installation time in order to work
  with Python 3.
• 278_: new Process.as_dict() method.
• 281_: ppid, name, exe, cmdline and create_time properties of Process class
  are now cached after being accessed.
• 282_: psutil.STATUS_* constants can now be compared by using their string
  representation.
• 283_: speedup Process.is_running() by caching its return value in case the
  process is terminated.
• 284_: [POSIX] per-process number of opened file descriptors.
• 287_: psutil.process_iter() now caches Process instances between calls.
• 290_: Process.nice property is deprecated in favor of new get_nice() and
  set_nice() methods.

Bug fixes

• 193_: psutil.Popen constructor can throw an exception if the spawned process
  terminates quickly.
• 240_: [OSX] incorrect use of free() for Process.get_connections().
• 244_: [POSIX] Process.wait() can hog CPU resources if called against a
  process which is not our children.
• 248_: [Linux] psutil.network_io_counters() might return erroneous NIC names.
• 252_: [Windows] process getcwd() erroneously raise NoSuchProcess for
  processes owned by another user. It now raises AccessDenied instead.
• 266_: [Windows] psutil.get_pid_list() only shows 1024 processes.
  (patch by Amoser)
• 267_: [OSX] Process.get_connections() - an erroneous remote address was
  returned. (Patch by Amoser)
• 272_: [Linux] Porcess.get_open_files() - potential race condition can lead to
  unexpected NoSuchProcess exception. Also, we can get incorrect reports
  of not absolutized path names.
• 275_: [Linux] Process.get_io_counters() erroneously raise NoSuchProcess on
  old Linux versions. Where not available it now raises
  NotImplementedError.
• 286_: Process.is_running() doesn't actually check whether PID has been
  reused.
• 314_: Process.get_children() can sometimes return non-children.

API changes

• Process.nice property is deprecated in favor of new get_nice() and set_nice()
  methods.
• psutil.get_process_list() is deprecated.
• ppid, name, exe, cmdline and create_time properties of Process class are now
  cached after being accessed, meaning NoSuchProcess will no longer be raised
  in case the process is gone in the meantime.
• psutil.STATUS_* constants can now be compared by using their string
  representation.

0.4.1

=====

2011-12-14

Bug fixes

• 228_: some example scripts were not working with python 3.
• 230_: [Windows / OSX] memory leak in Process.get_connections().
• 232_: [Linux] psutil.phymem_usage() can report erroneous values which are
  different than "free" command.
• 236_: [Windows] memory/handle leak in Process's get_memory_info(),
  suspend() and resume() methods.

0.4.0

=====

2011-10-29

Enhancements

• 150_: network I/O counters. (OSX and Windows patch by Jeremy Whitlock)
• 154_: [FreeBSD] add support for process getcwd()
• 157_: [Windows] provide installer for Python 3.2 64-bit.
• 198_: Process.wait(timeout=0) can now be used to make wait() return
  immediately.
• 206_: disk I/O counters. (OSX and Windows patch by Jeremy Whitlock)
• 213_: examples/iotop.py script.
• 217_: Process.get_connections() now has a "kind" argument to filter
  for connections with different criteria.
• 221_: [FreeBSD] Process.get_open_files has been rewritten in C and no longer
  relies on lsof.
• 223_: examples/top.py script.
• 227_: examples/nettop.py script.

Bug fixes

• 135_: [OSX] psutil cannot create Process object.
• 144_: [Linux] no longer support 0 special PID.
• 188_: [Linux] psutil import error on Linux ARM architectures.
• 194_: [POSIX] psutil.Process.get_cpu_percent() now reports a percentage over
  100 on multicore processors.
• 197_: [Linux] Process.get_connections() is broken on platforms not
  supporting IPv6.
• 200_: [Linux] psutil.NUM_CPUS not working on armel and sparc architectures
  and causing crash on module import.
• 201_: [Linux] Process.get_connections() is broken on big-endian
  architectures.
• 211_: Process instance can unexpectedly raise NoSuchProcess if tested for
  equality with another object.
• 218_: [Linux] crash at import time on Debian 64-bit because of a missing
  line in /proc/meminfo.
• 226_: [FreeBSD] crash at import time on FreeBSD 7 and minor.

0.3.0

=====

2011-07-08

Enhancements

• 125_: system per-cpu percentage utilization and times.
• 163_: per-process associated terminal (TTY).
• 171_: added get_phymem() and get_virtmem() functions returning system
  memory information (total, used, free) and memory percent usage.
  total_* avail_* and used_* memory functions are deprecated.
• 172_: disk usage statistics.
• 174_: mounted disk partitions.
• 179_: setuptools is now used in setup.py

Bug fixes

• 159_: SetSeDebug() does not close handles or unset impersonation on return.
• 164_: [Windows] wait function raises a TimeoutException when a process
  returns -1 .
• 165_: process.status raises an unhandled exception.
• 166_: get_memory_info() leaks handles hogging system resources.
• 168_: psutil.cpu_percent() returns erroneous results when used in
  non-blocking mode. (patch by Philip Roberts)
• 178_: OSX - Process.get_threads() leaks memory
• 180_: [Windows] Process's get_num_threads() and get_threads() methods can
  raise NoSuchProcess exception while process still exists.

0.2.1

=====

2011-03-20

Enhancements

• 64_: per-process I/O counters.
• 116_: per-process wait() (wait for process to terminate and return its exit
  code).
• 134_: per-process get_threads() returning information (id, user and kernel
  times) about threads opened by process.
• 136_: process executable path on FreeBSD is now determined by asking the
  kernel instead of guessing it from cmdline[0].
• 137_: per-process real, effective and saved user and group ids.
• 140_: system boot time.
• 142_: per-process get and set niceness (priority).
• 143_: per-process status.
• 147_: per-process I/O nice (priority) - Linux only.
• 148_: psutil.Popen class which tidies up subprocess.Popen and psutil.Process
  in a unique interface.
• 152_: [OSX] get_process_open_files() implementation has been rewritten
  in C and no longer relies on lsof resulting in a 3x speedup.
• 153_: [OSX] get_process_connection() implementation has been rewritten
  in C and no longer relies on lsof resulting in a 3x speedup.

Bug fixes

• 83_: process cmdline is empty on OSX 64-bit.
• 130_: a race condition can cause IOError exception be raised on
  Linux if process disappears between open() and subsequent read() calls.
• 145_: WindowsError was raised instead of psutil.AccessDenied when using
  process resume() or suspend() on Windows.
• 146_: 'exe' property on Linux can raise TypeError if path contains NULL
  bytes.
• 151_: exe and getcwd() for PID 0 on Linux return inconsistent data.

API changes

• Process "uid" and "gid" properties are deprecated in favor of "uids" and
  "gids" properties.

0.2.0

=====

2010-11-13

Enhancements

• 79_: per-process open files.
• 88_: total system physical cached memory.
• 88_: total system physical memory buffers used by the kernel.
• 91_: per-process send_signal() and terminate() methods.
• 95_: NoSuchProcess and AccessDenied exception classes now provide "pid",
  "name" and "msg" attributes.
• 97_: per-process children.
• 98_: Process.get_cpu_times() and Process.get_memory_info now return
  a namedtuple instead of a tuple.
• 103_: per-process opened TCP and UDP connections.
• 107_: add support for Windows 64 bit. (patch by cjgohlke)
• 111_: per-process executable name.
• 113_: exception messages now include process name and pid.
• 114_: process username Windows implementation has been rewritten in pure
  C and no longer uses WMI resulting in a big speedup. Also, pywin32 is no
  longer required as a third-party dependancy. (patch by wj32)
• 117_: added support for Windows 2000.
• 123_: psutil.cpu_percent() and psutil.Process.cpu_percent() accept a
  new 'interval' parameter.
• 129_: per-process number of threads.

Bug fixes

• 80_: fixed warnings when installing psutil with easy_install.
• 81_: psutil fails to compile with Visual Studio.
• 94_: suspend() raises OSError instead of AccessDenied.
• 86_: psutil didn't compile against FreeBSD 6.x.
• 102_: orphaned process handles obtained by using OpenProcess in C were
  left behind every time Process class was instantiated.
• 111_: path and name Process properties report truncated or erroneous
  values on UNIX.
• 120_: cpu_percent() always returning 100% on OS X.
• 112_: uid and gid properties don't change if process changes effective
  user/group id at some point.
• 126_: ppid, uid, gid, name, exe, cmdline and create_time properties are
  no longer cached and correctly raise NoSuchProcess exception if the process
  disappears.

API changes

• psutil.Process.path property is deprecated and works as an alias for "exe"
  property.
• psutil.Process.kill(): signal argument was removed - to send a signal to the
  process use send_signal(signal) method instead.
• psutil.Process.get_memory_info() returns a nametuple instead of a tuple.
• psutil.cpu_times() returns a nametuple instead of a tuple.
• New psutil.Process methods: get_open_files(), get_connections(),
  send_signal() and terminate().
• ppid, uid, gid, name, exe, cmdline and create_time properties are no longer
  cached and raise NoSuchProcess exception if process disappears.
• psutil.cpu_percent() no longer returns immediately (see issue 123).
• psutil.Process.get_cpu_percent() and psutil.cpu_percent() no longer returns
  immediately by default (see issue 123).

0.1.3

=====

2010-03-02

Enhancements

• 14_: per-process username
• 51_: per-process current working directory (Windows and Linux only)
• 59_: Process.is_running() is now 10 times faster
• 61_: added supoprt for FreeBSD 64 bit
• 71_: implemented suspend/resume process
• 75_: python 3 support

Bug fixes

• 36_: process cpu_times() and memory_info() functions succeeded also for dead
  processes while a NoSuchProcess exception is supposed to be raised.
• 48_: incorrect size for mib array defined in getcmdargs for BSD
• 49_: possible memory leak due to missing free() on error condition on
• 50_: fixed getcmdargs() memory fragmentation on BSD
• 55_: test_pid_4 was failing on Windows Vista
• 57_: some unit tests were failing on systems where no swap memory is
  available
• 58_: is_running() is now called before kill() to make sure we are going
  to kill the correct process.
• 73_: virtual memory size reported on OS X includes shared library size
• 77_: NoSuchProcess wasn't raised on Process.create_time if kill() was
  used first.

0.1.2

=====

2009-05-06

Enhancements

• 32_: Per-process CPU user/kernel times
• 33_: Process create time
• 34_: Per-process CPU utilization percentage
• 38_: Per-process memory usage (bytes)
• 41_: Per-process memory utilization (percent)
• 39_: System uptime
• 43_: Total system virtual memory
• 46_: Total system physical memory
• 44_: Total system used/free virtual and physical memory

Bug fixes

• 36_: [Windows] NoSuchProcess not raised when accessing timing methods.
• 40_: test_get_cpu_times() failing on FreeBSD and OS X.
• 42_: [Windows] get_memory_percent() raises AccessDenied.

0.1.1

=====

2009-03-06

Enhancements

• 4_: FreeBSD support for all functions of psutil
• 9_: Process.uid and Process.gid now retrieve process UID and GID.
• 11_: Support for parent/ppid - Process.parent property returns a
  Process object representing the parent process, and Process.ppid returns
  the parent PID.
• 12_ & 15:
  NoSuchProcess exception now raised when creating an object
  for a nonexistent process, or when retrieving information about a process
  that has gone away.
• 21_: AccessDenied exception created for raising access denied errors
  from OSError or WindowsError on individual platforms.
• 26_: psutil.process_iter() function to iterate over processes as
  Process objects with a generator.
• Process objects can now also be compared with == operator for equality
  (PID, name, command line are compared).

Bug fixes

• 16_: [Windows] Special case for "System Idle Process" (PID 0) which
  otherwise would return an "invalid parameter" exception.
• 17_: get_process_list() ignores NoSuchProcess and AccessDenied
  exceptions during building of the list.
• 22_: [Windows] Process(0).kill() was failing with an unset exception.
• 23_: Special case for pid_exists(0)
• 24_: [Windows] Process(0).kill() now raises AccessDenied exception instead
  of WindowsError.
• 30_: psutil.get_pid_list() was returning two ins

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