Code

Allocation profiler#42768

Code

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NHDaly merged 112 commits intoJuliaLang:masterJuliaLang/julia:masterfrom vilterp:pv-alloc-profile-flat-stacksvilterp/julia:pv-alloc-profile-flat-stacksCopy head branch name to clipboardJan 19, 2022

+620-2

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Commits on Jan 7, 2022

• alloc profiler

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• fix key

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• don't skip stdlib

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• rename

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• record freed values

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• print frees by type

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• fix recording & printing of frees

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• Return the raw data from the C++ allocations vector into julia!! :)

  

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• get started on decoding on Julia side

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• delete more serialization code

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• delete destructors and constructors

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• use unique_ptr

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• separate free function; move Julia decoding to stdlib

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• move more to the stdlib

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• start hacking on _reformat_bt

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• fix decoding

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• get alloc size and type address

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• just keep type type address for now

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• send type names over to the Julia side

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• package up frees as well

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• try to fix

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• malloc strings so they're not junk by the time we look at them

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• implement caching of stack trace lookups

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• add GC.@preserve, magically fixing segfaults (???)

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• delete code to stringify type names on C++ side

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• Fix hang in GC: use jl_safe_printf not jl_printf

  

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• Mark the AllocProfile C code as JL_NOTSAFEPOINT

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• print incr. vs full

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• put test back in; get it passing

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• simpler Base.show for AllocResults

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• remove gc.preserve

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• add top level profile function

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• clear after decoding

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• free memory allocated for results

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• first hack at multithreaded profiler

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• tweaks

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  b49606d

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• hold onto vectors

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• fix some compile errors

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• Remove file println debugging

  

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• Add precompile statements to AllocProfile package

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• add comment about precompilation

  

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• Malloc right-sized buffers for backtraces.

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• test that we get a free

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• remove GC logging. splitting off into another PR

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• remove a couple debugging things

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• add macro interface; use in test

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• fix whitespace

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• make skip_every a named optional argument to the macro

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• remove debug logs

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• add multithreaded test

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• skip another frame to avoid record_allocated_value

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• move AllocProfile into Profile package

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• rename AllocProfile => Profile.Allocs

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• load types: stop using threshold hack; just check for jl_buff_tag

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• remove unused struct

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• remove unused profile function

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• first hack at fetch API

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• switch to uniform sampling with rand()

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• small default sample rate

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• update comment

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• Comments + formatting cleanup for C files

  

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• Cleanups & comments & docstring

  

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  e1f8684

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• Split out and update Profile.Allocs tests

  

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  7de1d5f

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• Move the extern "C" around the impl of external funcs for Allocs

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• remove pritnln

  

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• move structs to header

  

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• Tried to fix compile error still failed...

  

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• Revert move struct defs - use forward decl instead

  

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• Rename BTElementT and add docstring example

  

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• remove garbage profile stuff

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• remove unordered_map

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• Fix typo after merge

  

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• Finish comment

  

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• fix typo

  

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• Stop clearing the profiled Allocations on start()

  

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• Fix tests after remove Garbage Profiler (frees)

  

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• rename to to maybe_record_alloc_to_profile

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• small test cleanups

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  48261b5

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• Fix double-free in the stop,fetch,clear logic

  

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• Add test for start stop fetch clear

  

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• Ah, fix tricky C++ism: missing a & caused accidental double-free

  

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• print warning message

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• Update stdlib/Profile/src/Allocs.jl

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• a couple cleanups; remove multithread assertion

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  d352a80

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• remove unordered_map import

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• first crack at docs

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• add news

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• Apply suggestions from code review

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• PR feedback

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• Merge branch 'pv-alloc-profile-docs-feedback' into pv-alloc-profile-docs

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• Merge pull request #13 from vilterp/pv-alloc-profile-docs

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Commits on Jan 11, 2022

• rename structs to match Julia style

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• Merge pull request #16 from vilterp/pv-alloc-profile-style-renames

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• print out percentage of allocs missed

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• remove some debug printlns

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• PR feedback

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• more PR feedback: _ before global names

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• rename jl_raw_alloc_results_t => jl_profile_allocs_raw_results_t

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• remove @shows

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• Merge pull request #15 from vilterp/pv-alloc-profile-allocs-missed

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Commits on Jan 12, 2022

• record string allocs

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• add string test

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• Merge pull request #18 from vilterp/pv-alloc-profile-record-strings

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• alloc profiler: avoid divide-by-zero errors (#19)

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Commits on Jan 13, 2022

• add paragraph about missed allocations

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Commits on Jan 18, 2022

• use !!! note style in comment

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• only print warning when missed_percentage > 0

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• Attempt to test the warning logs, but struggling to capture stderr

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• Remove the tests, but at least exercise both cases...

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• improve warning wording to indicate sampling

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• Add type assertion for alloc profiler unit tests

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Commits on Jan 19, 2022

• remove superfluous whitespace

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