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| author | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-05-18 08:29:28 +0000 |
|---|---|---|
| committer | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-05-18 08:29:28 +0000 |
| commit | 14fb10a9ec41c77a91a778ca2f705c1897958afb (patch) | |
| tree | cc69367b125f7286ecb253152e3ceb0f0cf579ca /tool | |
| parent | 74724107e96228c34f92a1f210342891bb29400e (diff) | |
gc.c: use monotonic counters for objspace_malloc_increase
atomic_sub_nounderflow is expensive and objspace_malloc_increase
was showing up near the top of some `perf` profiles. The new
implementation allows the compiler to inline and eliminate
some branches from objspace_malloc_increase.
Furthermore, we do not need atomics for oldmalloc_increase
This consistently improves bm_so_count_words benchmark by
around 10% on my hardware.
name built
so_count_words 1.107
[ruby-core:87096] [Feature #14767]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63463 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'tool')
0 files changed, 0 insertions, 0 deletions