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Implement interval-based heap profile dumping.

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Add mallctl interfaces for profiling parameters.

Fix a file descriptor leak in heap profile dumping.
This commit is contained in:
Jason Evans
2010-02-11 13:19:21 -08:00
parent b01a6c2057
commit d34f9e7e93
10 changed files with 292 additions and 76 deletions
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70
jemalloc/doc/jemalloc.3.in
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@@ -388,12 +388,11 @@ will disable dirty page purging.
@roff_tcache@Note that one cache slot per size class is not a valid
@roff_tcache@configuration due to implementation details.
@roff_prof@.It I
@roff_prof@Double/halve the maximum interval between memory profile dumps, as
@roff_prof@Double/halve the average interval between memory profile dumps, as
@roff_prof@measured in bytes of allocation activity.
@roff_prof@On average, profiles are written four times as often as the maximum
@roff_prof@interval requires.
@roff_prof@This is an artifact of the concurrent algorithm that is used to
@roff_prof@track allocation activity.
@roff_prof@The actual interval between dumps may be sporadic because
@roff_prof@decentralized allocation counters are used to avoid synchronization
@roff_prof@bottlenecks.
@roff_prof@Profiles are dumped to files named according to the pattern
@roff_prof@.Pa <prefix>.<pid>.<seq>.i<iseq>.heap ,
@roff_prof@where
@@ -401,7 +400,7 @@ will disable dirty page purging.
@roff_prof@is controlled by the
@roff_prof@JEMALLOC_PROF_PREFIX
@roff_prof@environment variable.
@roff_prof@The default maximum interval is 4 GiB.
@roff_prof@The default average interval is 1 GiB.
@roff_fill@.It J
@roff_fill@Each byte of new memory allocated by
@roff_fill@.Fn @jemalloc_prefix@malloc
@@ -693,6 +692,21 @@ This is useful for detecting whether another thread caused a refresh.
--enable-lazy-lock was specified during build configuration.
.Ed
.\"-----------------------------------------------------------------------------
.It Sy "config.prof (bool) r-"
.Bd -ragged -offset indent -compact
--enable-prof was specified during build configuration.
.Ed
.\"-----------------------------------------------------------------------------
.It Sy "config.prof_libgcc (bool) r-"
.Bd -ragged -offset indent -compact
--disable-prof-libgcc was not specified during build configuration.
.Ed
.\"-----------------------------------------------------------------------------
.It Sy "config.prof_libunwind (bool) r-"
.Bd -ragged -offset indent -compact
--enable-prof-libunwind was specified during build configuration.
.Ed
.\"-----------------------------------------------------------------------------
.It Sy "config.stats (bool) r-"
.Bd -ragged -offset indent -compact
--enable-stats was specified during build configuration.
@@ -782,6 +796,41 @@ See the
option.
.Ed
.\"-----------------------------------------------------------------------------
@roff_prof@.It Sy "opt.prof (bool) r-"
@roff_prof@.Bd -ragged -offset indent -compact
@roff_prof@See the
@roff_prof@.Dq F
@roff_prof@option.
@roff_prof@.Ed
.\"-----------------------------------------------------------------------------
@roff_prof@.It Sy "opt.lg_prof_bt_max (size_t) r-"
@roff_prof@.Bd -ragged -offset indent -compact
@roff_prof@See the
@roff_prof@.Dq B
@roff_prof@option.
@roff_prof@.Ed
.\"-----------------------------------------------------------------------------
@roff_prof@.It Sy "opt.lg_prof_interval (size_t) r-"
@roff_prof@.Bd -ragged -offset indent -compact
@roff_prof@See the
@roff_prof@.Dq I
@roff_prof@option.
@roff_prof@.Ed
.\"-----------------------------------------------------------------------------
@roff_prof@.It Sy "opt.prof_udump (bool) r-"
@roff_prof@.Bd -ragged -offset indent -compact
@roff_prof@See the
@roff_prof@.Dq U
@roff_prof@option.
@roff_prof@.Ed
.\"-----------------------------------------------------------------------------
@roff_prof@.It Sy "opt.prof_leak (bool) r-"
@roff_prof@.Bd -ragged -offset indent -compact
@roff_prof@See the
@roff_prof@.Dq L
@roff_prof@option.
@roff_prof@.Ed
.\"-----------------------------------------------------------------------------
@roff_trace@.It Sy "opt.trace (bool) r-"
@roff_trace@.Bd -ragged -offset indent -compact
@roff_trace@See the
@@ -993,6 +1042,15 @@ Maximum size supported by this large size class.
@roff_prof@environment variable.
@roff_prof@.Ed
.\"-----------------------------------------------------------------------------
@roff_prof@.It Sy "prof.interval (uint64_t) r-"
@roff_prof@.Bd -ragged -offset indent -compact
@roff_prof@Average number of bytes allocated between inverval-based profile
@roff_prof@dumps.
@roff_prof@See the
@roff_prof@.Dq I
@roff_prof@option for additional information.
@roff_prof@.Ed
.\"-----------------------------------------------------------------------------
@roff_stats@.It Sy "stats.allocated (size_t) r-"
@roff_stats@.Bd -ragged -offset indent -compact
@roff_stats@Total number of bytes allocated by the application.