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| author | kriti.s <kriti.s@samsung.com> | 2015-12-03 12:08:09 +0530 |
|---|---|---|
| committer | Youngcheol Kang <ychul.kang@samsung.com> | 2016-06-03 17:25:13 +0900 |
| commit | 0d3da1909c2f4094b3de4880d82b2f3d5883c0d5 (patch) | |
| tree | 3ffa710d59185c0d5c8e3c6f1986bfe102d32a5a | |
| parent | 31a5d6937a6a0ad1864a5d8f9242066d0d558068 (diff) | |
| download | v8-0d3da1909c2f4094b3de4880d82b2f3d5883c0d5.tar.gz v8-0d3da1909c2f4094b3de4880d82b2f3d5883c0d5.tar.bz2 v8-0d3da1909c2f4094b3de4880d82b2f3d5883c0d5.zip | |
[M40 Merge] [MEM OPT] Grow semispace by N pages
Runtime option:
--js-flags="--custom-semi-space-growth=1 --grow-semi-space-by-n-pages=0"
M40 patch: http://suprem.sec.samsung.net/gerrit/#/c/32705/
Below are the memory reading with and without patch for sunspider.
Without patch(PSS)- 552781
WIth patch(PSS)- 535521
Change-Id: I36270bbaee2a32a7d99fef6d494b06ca1342b824
Signed-off-by: kriti.s <kriti.s@samsung.com>
| -rw-r--r-- | src/flag-definitions.h | 3 | ||||
| -rw-r--r-- | src/heap/spaces.cc | 6 |
2 files changed, 9 insertions, 0 deletions
diff --git a/src/flag-definitions.h b/src/flag-definitions.h index e4e99c388..654037c6e 100644 --- a/src/flag-definitions.h +++ b/src/flag-definitions.h @@ -605,6 +605,9 @@ DEFINE_INT(target_semi_space_size, 0, DEFINE_INT(max_semi_space_size, 0, "max size of a semi-space (in MBytes), the new space consists of two" "semi-spaces") +DEFINE_INT(custom_semi_space_growth, 0, "Enable custom new space growth") +DEFINE_INT(grow_semi_space_by_n_pages, 1, + "Number of pages by which to grow the new space") DEFINE_INT(semi_space_growth_factor, 2, "factor by which to grow the new space") DEFINE_BOOL(experimental_new_space_growth_heuristic, false, "Grow the new space based on the percentage of survivors instead " diff --git a/src/heap/spaces.cc b/src/heap/spaces.cc index cd8a72951..f6feaec8b 100644 --- a/src/heap/spaces.cc +++ b/src/heap/spaces.cc @@ -1314,6 +1314,12 @@ void NewSpace::Grow() { int new_capacity = Min(MaximumCapacity(), FLAG_semi_space_growth_factor * static_cast<int>(TotalCapacity())); + if (FLAG_custom_semi_space_growth) + new_capacity = static_cast<int>(TotalCapacity()) + + FLAG_grow_semi_space_by_n_pages * Page::kPageSize; + fprintf(stderr, + "[ V8 ] new_capacity size: %d\ntotal capacity size: %d\nMaximumCapacity size: %d\n", + new_capacity, static_cast<int>(TotalCapacity()), MaximumCapacity()); if (to_space_.GrowTo(new_capacity)) { // Only grow from space if we managed to grow to-space. if (!from_space_.GrowTo(new_capacity)) { |