Date: Sun, 31 Jan 2010 23:16:10 +0000 (UTC) From: Jason Evans <jasone@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/lib/libc/stdlib malloc.3 malloc.c ql.h qr.h Message-ID: <201001312316.o0VNGVmd037467@repoman.freebsd.org>
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jasone 2010-01-31 23:16:10 UTC
FreeBSD src repository
Modified files:
lib/libc/stdlib malloc.3 malloc.c
Added files:
lib/libc/stdlib ql.h qr.h
Log:
SVN rev 203329 on 2010-01-31 23:16:10Z by jasone
Fix bugs:
* Fix a race in chunk_dealloc_dss().
* Check for allocation failure before zeroing memory in base_calloc().
Merge enhancements from a divergent version of jemalloc:
* Convert thread-specific caching from magazines to an algorithm that is
more tunable, and implement incremental GC.
* Add support for medium size classes, [4KiB..32KiB], 2KiB apart by
default.
* Add dirty page tracking for pages within active small/medium object
runs. This allows malloc to track precisely which pages are in active
use, which makes dirty page purging more effective.
* Base maximum dirty page count on proportion of active memory.
* Use optional zeroing in arena_chunk_alloc() to avoid needless zeroing
of chunks. This is useful in the context of DSS allocation, since a
long-lived application may commonly recycle chunks.
* Increase the default chunk size from 1MiB to 4MiB.
Remove feature:
* Remove the dynamic rebalancing code, since thread caching reduces its
utility.
Revision Changes Path
1.82 +77 -71 src/lib/libc/stdlib/malloc.3
1.190 +1960 -1290 src/lib/libc/stdlib/malloc.c
1.1 +122 -0 src/lib/libc/stdlib/ql.h (new)
1.1 +106 -0 src/lib/libc/stdlib/qr.h (new)
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