gopsutil: psutil for golang

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This is a port of psutil (http://pythonhosted.org/psutil/). The challenge is porting all psutil functions on some architectures.

Breaking Changes! golang 1.8 is required

After v2.17.04, golang 1.8 is required to build.

Tag semantics

gopsutil tag policy is almost same as Semantic Versioning, but automatically increase like Ubuntu versioning.

for example, v2.17.04 means

v2: major version
17: release year, 2017
04: release month

gopsutil aims to keep backwards-compatiblity until major version change.

Taged at every end of month, but there are only a few commits, it can be skipped.

Available Architectures

FreeBSD i386/amd64/arm
Linux i386/amd64/arm(raspberry pi)
Windows/amd64
Darwin i386/amd64
OpenBDS amd64 (Thank you @mpfz0r!)
Solaris amd64 (developed and tested on SmartOS/Illumos, Thank you @jen20!)

All works are implemented without cgo by porting c struct to golang struct.

Usage

Note: gopsutil v2 breaks compatibility. If you want to stay with compatibility, please use v1 branch and vendoring.

package main

import (
    "fmt"

    "github.com/shirou/gopsutil/mem"
)

func main() {
    v, _ := mem.VirtualMemory()

    // almost every return value is a struct
    fmt.Printf("Total: %v, Free:%v, UsedPercent:%f%%\n", v.Total, v.Free, v.UsedPercent)

    // convert to JSON. String() is also implemented
    fmt.Println(v)
}

The output is below.

Total: 3179569152, Free:284233728, UsedPercent:84.508194%
{"total":3179569152,"available":492572672,"used":2895335424,"usedPercent":84.50819439828305, (snip...)}

You can set an alternative location to /proc by setting the HOST_PROC environment variable.

You can set an alternative location to /sys by setting the HOST_SYS environment variable.

You can set an alternative location to /etc by setting the HOST_ETC environment variable.

Documentation

see http://godoc.org/github.com/shirou/gopsutil

Requirements

go1.5 or above is required.

More Info

Several methods have been added which are not present in psutil, but will provide useful information.

host/HostInfo() (linux)
- Hostname
- Uptime
- Procs
- OS (ex: "linux")
- Platform (ex: "ubuntu", "arch")
- PlatformFamily (ex: "debian")
- PlatformVersion (ex: "Ubuntu 13.10")
- VirtualizationSystem (ex: "LXC")
- VirtualizationRole (ex: "guest"/"host")
cpu/CPUInfo() (linux, freebsd)
- CPU (ex: 0, 1, ...)
- VendorID (ex: "GenuineIntel")
- Family
- Model
- Stepping
- PhysicalID
- CoreID
- Cores (ex: 2)
- ModelName (ex: "Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz")
- Mhz
- CacheSize
- Flags (ex: "fpu vme de pse tsc msr pae mce cx8 ...")
- Microcode
load/LoadAvg() (linux, freebsd)
- Load1
- Load5
- Load15
docker/GetDockerIDList() (linux only)
- container id list ([]string)
docker/CgroupCPU() (linux only)
- user
- system
docker/CgroupMem() (linux only)
- various status
net_protocols (linux only)
- system wide stats on network protocols (i.e IP, TCP, UDP, etc.)
- sourced from /proc/net/snmp
iptables nf_conntrack (linux only)
- system wide stats on netfilter conntrack module
- sourced from /proc/sys/net/netfilter/nf_conntrack_count

Some codes are ported from Ohai. many thanks.

Current Status

x: work
b: almost works, but something is broken

Process class

name	Linux	FreeBSD	OpenBSD	MacOSX	Windows
pid	x	x	x	x	x
ppid	x	x	x	x	x
name	x	x	x	x	x
cmdline	x			x	x
create_time	x			x
status	x	x	x	x
cwd	x
exe	x	x	x		x
uids	x	x	x	x
gids	x	x	x	x
terminal	x	x	x	x
io_counters	x	x	x		x
nice	x	x	x	x	x
num_fds	x
num_ctx_switches	x
num_threads	x	x	x	x	x
cpu_times	x
memory_info	x	x	x	x	x
memory_info_ex	x
memory_maps	x
open_files	x
send_signal	x	x	x	x
suspend	x	x	x	x
resume	x	x	x	x
terminate	x	x	x	x	x
kill	x	x	x	x
username	x	x	x	x	x
ionice
rlimit	x
num_handlers
threads
cpu_percent	x		x	x
cpu_affinity
memory_percent
parent	x		x	x	x
children	x	x	x	x	x
connections	x		x	x
is_running

Original Metrics

item	Linux	FreeBSD	OpenBSD	MacOSX	Windows	Solaris
HostInfo
hostname	x	x	x	x	x	x
uptime	x	x	x	x		x
proces	x	x	x			x
os	x	x	x	x	x	x
platform	x	x	x	x		x
platformfamily	x	x	x	x		x
virtualization	x
CPU
VendorID	x	x	x	x	x	x
Family	x	x	x	x	x	x
Model	x	x	x	x	x	x
Stepping	x	x	x	x	x	x
PhysicalID	x					x
CoreID	x					x
Cores	x				x	x
ModelName	x	x	x	x	x	x
Microcode	x					x
LoadAvg
Load1	x	x	x	x
Load5	x	x	x	x
Load15	x	x	x	x
GetDockerID
container id	x	no	no	no	no
CgroupsCPU
user	x	no	no	no	no
system	x	no	no	no	no
CgroupsMem
various	x	no	no	no	no

future work
- process_iter
- wait_procs
- Process class
  - as_dict
  - wait

License

New BSD License (same as psutil)

Related Works

I have been influenced by the following great works:

psutil: http://pythonhosted.org/psutil/
dstat: https://github.com/dagwieers/dstat
gosigar: https://github.com/cloudfoundry/gosigar/
goprocinfo: https://github.com/c9s/goprocinfo
go-ps: https://github.com/mitchellh/go-ps
ohai: https://github.com/opscode/ohai/
bosun: https://github.com/bosun-monitor/bosun/tree/master/cmd/scollector/collectors
mackerel: https://github.com/mackerelio/mackerel-agent/tree/master/metrics

How to Contribute

Fork it
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Add some feature')
Push to the branch (git push origin my-new-feature)
Create new Pull Request

My English is terrible, so documentation or correcting comments are also welcome.

License

fhmq/gopsutil

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