Index: third_party/tcmalloc/chromium/src/common.h |
=================================================================== |
--- third_party/tcmalloc/chromium/src/common.h (revision 127380) |
+++ third_party/tcmalloc/chromium/src/common.h (working copy) |
@@ -79,14 +79,18 @@ |
static const size_t kPageShift = 15; |
static const size_t kNumClasses = 78 - kSkippedClasses; |
#else |
-static const size_t kPageShift = 13; |
-static const size_t kNumClasses = 86 - kSkippedClasses; |
+// 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; |
#endif |
static const size_t kMaxThreadCacheSize = 4 << 20; |
static const size_t kPageSize = 1 << kPageShift; |
-// TODO(dmikurube): We Chromium may want to tune this kMaxSize. |
-static const size_t kMaxSize = 256 * 1024; |
+// 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; |
// For all span-lengths < kMaxPages we keep an exact-size list. |
static const size_t kMaxPages = 1 << (20 - kPageShift); |