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Push locks into arena bins.

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For bin-related allocation, protect data structures with bin locks
rather than arena locks.  Arena locks remain for run
allocation/deallocation and other miscellaneous operations.

Restructure statistics counters to maintain per bin
allocated/nmalloc/ndalloc, but continue to provide arena-wide statistics
via aggregation in the ctl code.
This commit is contained in:
Jason Evans
2010-03-13 20:32:56 -08:00
parent 1e0a636c11
commit 86815df9dc
9 changed files with 368 additions and 191 deletions
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35
jemalloc/doc/jemalloc.3.in
View File

@@ -38,7 +38,7 @@
.\" @(#)malloc.3 8.1 (Berkeley) 6/4/93
.\" $FreeBSD: head/lib/libc/stdlib/malloc.3 182225 2008-08-27 02:00:53Z jasone $
.\"
.Dd March 4, 2010
.Dd March 13, 2010
.Dt JEMALLOC 3
.Os
.Sh NAME
@@ -1134,12 +1134,17 @@ has not been called.
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.arenas.<i>.small.nmalloc (uint64_t) r-"
@roff_stats@.Bd -ragged -offset indent -compact
@roff_stats@Cumulative number of small allocation requests.
@roff_stats@Cumulative number of allocation requests served by small bins.
@roff_stats@.Ed
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.arenas.<i>.small.ndalloc (uint64_t) r-"
@roff_stats@.Bd -ragged -offset indent -compact
@roff_stats@Cumulative number of small deallocation requests.
@roff_stats@Cumulative number of small objects returned to bins.
@roff_stats@.Ed
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.arenas.<i>.small.nrequests (uint64_t) r-"
@roff_stats@.Bd -ragged -offset indent -compact
@roff_stats@Cumulative number of small allocation requests.
@roff_stats@.Ed
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.arenas.<i>.medium.allocated (size_t) r-"
@@ -1149,12 +1154,17 @@ has not been called.
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.arenas.<i>.medium.nmalloc (uint64_t) r-"
@roff_stats@.Bd -ragged -offset indent -compact
@roff_stats@Cumulative number of medium allocation requests.
@roff_stats@Cumulative number of allocation requests served by medium bins.
@roff_stats@.Ed
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.arenas.<i>.medium.ndalloc (uint64_t) r-"
@roff_stats@.Bd -ragged -offset indent -compact
@roff_stats@Cumulative number of medium deallocation requests.
@roff_stats@Cumulative number of medium objects returned to bins.
@roff_stats@.Ed
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.arenas.<i>.medium.nrequests (uint64_t) r-"
@roff_stats@.Bd -ragged -offset indent -compact
@roff_stats@Cumulative number of medium allocation requests.
@roff_stats@.Ed
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.arenas.<i>.large.allocated (size_t) r-"
@@ -1172,6 +1182,21 @@ has not been called.
@roff_stats@Cumulative number of large deallocation requests.
@roff_stats@.Ed
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.arenas.<i>.bins.<j>.allocated (size_t) r-"
@roff_stats@.Bd -ragged -offset indent -compact
@roff_stats@Current number of bytes allocated by bin.
@roff_stats@.Ed
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.arenas.<i>.bins.<j>.nmalloc (uint64_t) r-"
@roff_stats@.Bd -ragged -offset indent -compact
@roff_stats@Cumulative number of allocations served by bin.
@roff_stats@.Ed
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.arenas.<i>.bins.<j>.ndalloc (uint64_t) r-"
@roff_stats@.Bd -ragged -offset indent -compact
@roff_stats@Cumulative number of allocations returned to bin.
@roff_stats@.Ed
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.arenas.<i>.bins.<j>.nrequests (uint64_t) r-"
@roff_stats@.Bd -ragged -offset indent -compact
@roff_stats@Cumulative number of allocation requests.