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Linux Perf Support + Causal Profiling Updates (#276)
* causal backtrace updates
- fix initial causal sampling period value
* causal delay updates
- tweak handling of sleep_for_overhead
* Fix experiment global scaling for prog pts
- results in drastically improved predictions
* pthread_mutex_gotcha updates
- disable all wrappers during causal profiling
* validate-causal-json.py updates
- support decimal stddev
- fix setting stddev from command-line
* causal perform_experiment_impl update
- handle start failing because finalizing
* deprecate causal::component::sample_rate
- appears to not help at all
* Rework sample info
* Increase causal unwind_depth
- use OMNITRACE_MAX_UNWIND_DEPTH
* validate-causal-json updates
- min experiments
- exclude reporting predictions with less than X experiments at a given speedup
- percent samples
- only print samples within X% of the peak (default: 95%)
* Update timemory submodule
- extensions to sampling for signals delivered via non-timer method
- e.g. via HW counter overflow
* dwarf_entry::operator< updates
- sort via file
* causal profiling docs updates
- info about backends
- info about installing/enabling perf
* config updates: causal backend
- CausalBackend enum
- OMNITRACE_CAUSAL_BACKEND: perf, timer, auto
- omnitrace-causal option: --backend
* debug update
- use spin_mutex instead of std::mutex
* address_range::contains update
- range from 0-100 contains range from 10-100 but was returning false because high was == 100 not < 100
* symbol::operator< update
- handle load address differences
* sampling updates (non-causal)
- update get_timer to get_trigger + dynamic_cast
* container::static_vector updates
- support construction from container::c_array
- update_size private member func for handling atomic m_size
* Move perf files
- moved library/causal/perf.{hpp,cpp} to library/perf.{hpp,cpp}
* causal example update
- created impl.hpp (forward decls)
- renamed {cpu,rng}_func_impl to {cpu,rng}_impl_func
- only create two threads which run N iterations instead of two threads each iteration
* Update timemory submodule
- updates to unwind::processed_entry
- updates to procfs::maps
* Updated causal documentation
- fixed line numbers changed by modifications to causal example
* omnitrace-causal exe updates
- set OMNITRACE_THREAD_POOL_SIZE to zero by default
* core/containers updates
- static_vector: provide data() member function
- c_array pop_front() and pop_back() member functions
* core: config and argparse updates + perf
- core/perf.{hpp,cpp}
- forward decl of enums
- config-related capabilities
- argparse: --sample-overflow
- renamed some config functions
- e.g. get_sampling_cpu_freq -> get_sampling_cputime_freq
- added config settings related to overflow sampling via perf
- added timer_sampling and overflow_sampling categories
* Update timemory submodule
- sampling allocator flushing
* binary updates
- lookup_ipaddr_entry
- use bfd_find_nearest_line instead of bfd_find_nearest_line_discriminator
- discriminators are not used
- explicit instantiations of inlined_symbol::serialize
* Bump VERSION to 1.10.0
* sampling and perf updates
- support overflow sampling via Linux Perf
- update perf namespace
- update perf::perf_event
- update record ctor: pointer instead of const ref
- update open member func: return optional string
- add m_batch_size member variable
- sampling updates
- support overflow sampling
- flush allocators
- increase buffer size from 1024 to 2048
- restructure post-processing in light of perf overflow supports
- improve offload memory usage only load buffers for thread
- load_offload_buffer(tid) uses thread-specific filepos
- component updates
- backtrace_metrics::operator-=
- backtrace_metrics::operator-
- backtrace::sample does not record for overflow signal
- callchain: perf overflow sample
* core updates
- component::sampling_percent does not report self + uses_percent_units
* causal updates
- tweak get_line_info
- overloads for set_current_selection (uint64_t, c_array, std::array)
- delay
- use sampling::pause/sampling::resume
- experiment
- experiment::sample derives from unwind::processed_entry
- experiment::samples is vector instead of set
- fixed samples
- overloads for is_selected (uint64_t, c_array, std::array)
- scaling factor defaults to 100 instead of 50
- serialize updates follow change to experiment::sample
- modify algorithm for increasing/decreasing experiment length
- sample_data
- use map<uintptr, uint64_t> instead of set<sample_data>
- get_samples returns vector<sample_data> instead of set<sample_data>
- sampling
- support overflow via Linux Perf
- update causal_offload_buffer
- flush sampling allocator
- backtrace
- overflow component
* libomnitrace-dl updates
- handle dl::InstrumentMode::PythonProfile
* testing updates (causal)
- causal line 155 -> causal line 100
- causal line 165 -> causal line 110
* formatting
* exit_gotcha updates
- exit_info for abort()
- message about non-zero exit code
* testing updates
- fail regex for causal tests
- validate-causal-json: >= min_experiments instead of > min_experiments
- handle OMNITRACE_DEBUG_SETTINGS in omnitrace_write_test_config
* causal sampling updates
- add new lines where appropriate
* causal data updates
- reorder diagnostic info when experiment fails to start
* binary updates
- symbol address range from address to address + symsize + 1
- add 1 based on debug info
* causal data updates
- sample_selection wait_ns defaults to 1,000 instead of 10,000
- sample_selection wait scaled by iteration number
- save_line_info_impl verbosity
- print latest_eligible_pc when experiment does not start
* causal sampling + component updates
- perf backend disables component::backtrace
- ensure get_sampling_(realtime|cputime|overflow)_signal do not malloc
* causal: remove period stats
* validate-causal-json update
- fix --help
* causal data updates
- improve eligible pc history reporting when experiment fails to start
* causal data updates
- fix compute_eligible_lines_impl
- eligible address ranges returning too many ranges
- occasionally, overwrite all *true* eligible address ranges
* causal data updates
- reduce scoped ranges to symbol ranges
- is_eligible_address() returns true contains (not just coarse)
- revert some sample_selection behavior
* binary address_multirange updates
- make coarse_range private
- fix operator+=(pair<coarse, uintptr_t>)
* causal example update
- fix nsync to default to once per iteration
* binary analysis updates
- tweak header file includes
* causal updates
- remove factoring in sleep_for_overhead
- invoke delay::process() even if experiment is not active
* causal data updates
- update latest_eligible_pc structure
* update omnitrace-install.py.in
- fix support for fedora
- /etc/os-release does not have ID_LIKE
- fallback to RHEL 8.7 if version not specified
* update omnitrace-install.py.in
- fix support for debian
- /etc/os-release does not have ID_LIKE
- version mapping
* Update documentation
- update docs on installation
* causal data and experiment updates
- data: reset_sample_selection
* causal set_current_selection debugging
- debug messages for failed e2e runs
* causal data and backtrace component updates
- data: set_current_selection returns the number of eligible addresses added
- backtrace: if cputime signal has selected zero IPs > 5x, then realtime signal starts contributing call-stacks
* core library updates
- move config::parse_numeric_range to utility namespace
- add core/utility.cpp
- support range:increment, e.g. 5-25:10 expands to '5 15 25' instead of '5 10 15 20 25'
* omnitrace-causal update
- end-to-end expands all speedups
- support range:increment in speedups
* causal backtrace updates
- remove select_ival (realtime signal always contributes when select_count == 0)
* containers: static_vector update
- explicit c_array constructor
- explicit std::array constructor
* causal data updates
- remove set_current_selection(uint64_t)
- remove set_current_selection(std::array)
- sample_selection increase default wait time
- report eligible PC candidates
- move reset_sample_selection to perform_experiment_impl
- decrease latest_eligible_pc array size
- set_current_selection does not guard for experiment::active
* core debug updates
- OMNITRACE_PRINT_COLOR macros
* causal data updates
- tweak to experiment never started message
* causal gotcha updates
- remove unused code
* critical trace updates
- remove unused code
* omnitrace-causal
- OMNITRACE_LAUNCHER
* causal data updates
- don't fail on end-to-end + omnitrace-causal
* causal backtrace updates
- reintroduce select_ival behavior
* causal data updates
- tweak verbose messages about number of PC candidates
* core mproc updates
- utilities for waiting on child PID and diagnosing status
- omnitrace::mproc::wait_pid
- omnitrace::mproc::diagnose_status
* omnitrace-run updates
- support --fork argument for executing via fork in current process + execvpe on child instead of execvpe in current process
* omnitrace-causal updates
- wait_pid and diagnose_status just call equivalent functions in omnitrace::mproc
* ubuntu-focal workflow update
- attempt to launch ubuntu-focal-codecov job with CAP_SYS_ADMIN and use perf backend
* tests reorg and updates
- remove binary-rewrite-sampling and runtime-instrument-sampling tests
- rename *-preload tests (which use omnitrace-sample exe) to *-sampling
- split tests/CMakeLists.txt into several tests/omnitrace-<category>-tests.cmake files
- tweak to causal-both-omni-func test
- add args: -n 2 -b timer
* update validate-causal-json.py
- better reasoning info for adjusting tolerance
- always apply tolerance adjustments in CI mode
* causal e2e tests update
- add label "causal-e2e" label
- tweak params
- old: 80 12 432525 500000000
- new: 80 50 432525 100000000
- disable processor affinity for slow-func/line-100 tests
- artificially inflates some speedups with perf
* unblocking_gotcha updates
- overload operator() according to gotcha function index
* blocking_gotcha updates
- overload operator() according to gotcha function index
- fix bug where potentially post block functors (e.g. pthread_mutex_trylock) throw error if lock is not acquired.
* parse_numeric_range update
- support unordered_set
* config update
- OMNITRACE_DEBUG_{TIDS,PIDS} use parse_numeric_range- Loading branch information
