| commit | 2df2efd2469229b03a47fe3b7ae63ec7120a5c03 | |
| author | Douglas Katzman <dougk@google.com> | |
| Sat, 7 Oct 2017 02:06:13 +0000 (6 22:06 -0400) | ||
| committer | Douglas Katzman <dougk@google.com> | |
| Sat, 7 Oct 2017 02:19:40 +0000 (6 22:19 -0400) | ||
| tree | 3c68a36496917fd83088583dafd64e0d8d4605a7 | treesnapshot (tar.gz zip) |
| parent | ac0908c376eab765dc2b82a768d79ce545c86adb | commitdiff |
Remove bias against partial pages in find_freeish_pages
The allocator fragments memory slightly less when it has freedom to
continue where it left off on a page.
Concerns of excessive conservativism no longer pertain.
Previously there could have been a ripple effect, if, say an object began at
the end of one page, consumed the next whole page, and two words more from the
page after that. A conservative reference from the stack would have pinned
thee pages worth of objects. This is no longer the case.
The allocator fragments memory slightly less when it has freedom to
continue where it left off on a page.
Concerns of excessive conservativism no longer pertain.
Previously there could have been a ripple effect, if, say an object began at
the end of one page, consumed the next whole page, and two words more from the
page after that. A conservative reference from the stack would have pinned
thee pages worth of objects. This is no longer the case.
| src/runtime/gencgc.c | diffblobblamehistory |