diff options
| -rw-r--r-- | src/allocators/tcmalloc.py | 7 | ||||
| -rw-r--r-- | src/allocators/tcmalloc/tcmalloc_2.7_cacheline_exclusive.patch | 26 |
2 files changed, 32 insertions, 1 deletions
diff --git a/src/allocators/tcmalloc.py b/src/allocators/tcmalloc.py index ecd03e1..ce00df3 100644 --- a/src/allocators/tcmalloc.py +++ b/src/allocators/tcmalloc.py @@ -45,6 +45,11 @@ tcmalloc_nofs = TCMalloc("TCMalloc-NoFalsesharing", tcmalloc_align = TCMalloc("TCMalloc-Aligned", version="gperftools-2.7", - color="xkcd:navy") + color="xkcd:light blue") tcmalloc_align.LD_PRELOAD = f"{BUILDDIR}/align_to_cl.so {tcmalloc_align.LD_PRELOAD}" + +tcmalloc_cacheline_exclusive = TCMalloc("TCMalloc-Cacheline-Exclusive", + patches=["{patchdir}/tcmalloc_2.7_cacheline_exclusive.patch"], + version="gperftools-2.7", + color="xkcd:royal blue") diff --git a/src/allocators/tcmalloc/tcmalloc_2.7_cacheline_exclusive.patch b/src/allocators/tcmalloc/tcmalloc_2.7_cacheline_exclusive.patch new file mode 100644 index 0000000..bdd63e3 --- /dev/null +++ b/src/allocators/tcmalloc/tcmalloc_2.7_cacheline_exclusive.patch @@ -0,0 +1,26 @@ +diff --git src/common.cc src/common.cc +index 203afdf..9257518 100644 +--- src/common.cc ++++ src/common.cc +@@ -79,7 +79,7 @@ int AlignmentForSize(size_t size) { + if (size > kMaxSize) { + // Cap alignment at kPageSize for large sizes. + alignment = kPageSize; +- } else if (size >= 128) { ++ } else if (size >= 512) { + // Space wasted due to alignment is at most 1/8, i.e., 12.5%. + alignment = (1 << LgFloor(size)) / 8; + } else if (size >= kMinAlign) { +diff --git a/src/common.h b/src/common.h +index cb45315..4131a13 100644 +--- src/common.h ++++ src/common.h +@@ -61,7 +61,7 @@ typedef uintptr_t Length; + // waste due alignment of 25%. (eg malloc of 24 bytes will get 32 bytes) + static const size_t kMinAlign = 8; + #else +-static const size_t kMinAlign = 16; ++static const size_t kMinAlign = 64; + #endif + + // Using large pages speeds up the execution at a cost of larger memory use. |