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RSS usage tuning for 64K pages 

This patch lowers TCMalloc RSS usage when TCMALLOC_LARGE_PAGES64K is
defined by tuning page scavenge values.
This commit is contained in:
Adhemerval Zanella 2014-02-02 18:35:30 -02:00
parent b96203b591
commit d8b21a8086
1 changed files with 10 additions and 0 deletions
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10
src/page_heap.h
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@ -206,11 +206,21 @@ class PERFTOOLS_DLL_DECL PageHeap {
// Never delay scavenging for more than the following number of // Never delay scavenging for more than the following number of
// deallocated pages. With 4K pages, this comes to 4GB of // deallocated pages. With 4K pages, this comes to 4GB of
// deallocation. // deallocation.
#ifndef TCMALLOC_LARGE_PAGES64K
static const int kMaxReleaseDelay = 1 << 20; static const int kMaxReleaseDelay = 1 << 20;
#else
// With 64K pages this come to 16M
static const int kMaxReleaseDelay = 1 << 8;
#endif
// If there is nothing to release, wait for so many pages before // If there is nothing to release, wait for so many pages before
// scavenging again. With 4K pages, this comes to 1GB of memory. // scavenging again. With 4K pages, this comes to 1GB of memory.
#ifndef TCMALLOC_LARGE_PAGES64K
static const int kDefaultReleaseDelay = 1 << 18; static const int kDefaultReleaseDelay = 1 << 18;
#else
// WIth 64K pages, this comes to 4MB
static const int kDefaultReleaseDelay = 1 << 6;
#endif
// Pick the appropriate map and cache types based on pointer size // Pick the appropriate map and cache types based on pointer size
typedef MapSelector<kAddressBits>::Type PageMap; typedef MapSelector<kAddressBits>::Type PageMap;