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| author | dmikurube@chromium.org <dmikurube@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-03-17 22:05:40 +0000 |
|---|---|---|
| committer | dmikurube@chromium.org <dmikurube@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-03-17 22:05:40 +0000 |
| commit | 2c867e59c1b35ca4b35cde9108a5b1184ceb640d (patch) | |
| tree | 6d6a56bc887541e044127a18110753d4122fcb23 /third_party | |
| parent | 28ff22415ecbb68e0a5157a46e206bd74b27ce91 (diff) | |
| download | chromium_src-2c867e59c1b35ca4b35cde9108a5b1184ceb640d.zip chromium_src-2c867e59c1b35ca4b35cde9108a5b1184ceb640d.tar.gz chromium_src-2c867e59c1b35ca4b35cde9108a5b1184ceb640d.tar.bz2 | |
Revert 127301 - Try fixing virtual memory regression from new tcmalloc: use old kPageShift and kMaxSize w/ kNumClasses = 54.
Will be reverted.
BUG=118329
TEST=perf tests.
Review URL: https://chromiumcodereview.appspot.com/9722001
TBR=dmikurube@chromium.org
Review URL: https://chromiumcodereview.appspot.com/9722024
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@127379 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'third_party')
| -rw-r--r-- | third_party/tcmalloc/chromium/src/common.h | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/third_party/tcmalloc/chromium/src/common.h b/third_party/tcmalloc/chromium/src/common.h index 2d24218..4f848fa 100644 --- a/third_party/tcmalloc/chromium/src/common.h +++ b/third_party/tcmalloc/chromium/src/common.h @@ -79,18 +79,14 @@ static const size_t kSkippedClasses = (kAlignment < kMinClassSize ? 1 : 0); static const size_t kPageShift = 15; static const size_t kNumClasses = 78 - kSkippedClasses; #else -// Original TCMalloc code used kPageShift == 13. In Chromium, we changed -// this to 12 (as was done in prior versions of TCMalloc). -static const size_t kPageShift = 12; -static const size_t kNumClasses = 54 - kSkippedClasses; +static const size_t kPageShift = 13; +static const size_t kNumClasses = 86 - kSkippedClasses; #endif static const size_t kMaxThreadCacheSize = 4 << 20; static const size_t kPageSize = 1 << kPageShift; -// Original TCMalloc code used kMaxSize == 256 * 1024. In Chromium, we -// changed this to 32K, and represent it in terms of page size (as was done -// in prior versions of TCMalloc). -static const size_t kMaxSize = 8u * kPageSize; +// TODO(dmikurube): We Chromium may want to tune this kMaxSize. +static const size_t kMaxSize = 256 * 1024; // For all span-lengths < kMaxPages we keep an exact-size list. static const size_t kMaxPages = 1 << (20 - kPageShift); |