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29 Commits

Author SHA1 Message Date
Jason Evans
b9477e782b Implement sampling for heap profiling. 2010-03-01 20:15:26 -08:00
Jason Evans
65aae2cf57 Fix a man page typo. 2010-02-11 16:46:42 -08:00
Jason Evans
376b1529a3 Restructure source tree. 2010-02-11 14:45:59 -08:00
Jason Evans
fe5faa2cc5 Remove tracing (--enable-trace). 
Remove all functionality related to tracing.  This functionality was
useful for understanding memory fragmentation during early algorithmic
design of jemalloc, but it had little utility for non-trivial
applications, due to the sheer volume of data written to disk.
 2010-02-11 13:38:12 -08:00
Jason Evans
d34f9e7e93 Implement interval-based heap profile dumping. 
Add mallctl interfaces for profiling parameters.

Fix a file descriptor leak in heap profile dumping.
 2010-02-11 13:19:21 -08:00
Jason Evans
b01a6c2057 Add JEMALLOC_PROF_PREFIX support. 
If JEMALLOC_PROF_PREFIX is set in the environment, use it as the
filename prefix when dumping heap profiles, rather than "jeprof".
 2010-02-11 10:25:36 -08:00
Jason Evans
6109fe07a1 Implement allocation profiling and leack checking. 
Add the --enable-prof and --enable-prof-libunwind configure options.

Add the B/b, F/f, I/i, L/l, and U/u JEMALLOC_OPTIONS.

Interval-based profile dump triggering is not yet implemented.

Add supporting generic code:
* Add memory barriers.
* Add prn (LCG PRNG).
* Add hash (Murmur hash function).
* Add ckh (cuckoo hash tables).
 2010-02-10 10:37:57 -08:00
Jason Evans
d8f565f239 Remove tcache bin sorting during flush. 
This feature caused significant performance degradation, and the
fragmentation reduction benefits were difficult to quantify.
 2010-01-29 13:37:31 -08:00
Jason Evans
c66aaf1476 Statistics fixes and cleanup. 
Fix a type mismatch for "arenas.nlruns" mallctl access.  This bug caused
a crash during statistics printing on 64-bit systems.

Fix the "stats.active" mallctl to include active memory in huge objects.

Report active bytes for the whole application, as well as per arena.

Remove several unused variables.
 2010-01-29 11:24:19 -08:00
Jason Evans
3c2343518c Implement mallctl{nametomib,bymib}(). 
Replace chunk stats code that was missing locking; this fixes a race
condition that could corrupt chunk statistics.

Converting malloc_stats_print() to use mallctl*().

Add a missing semicolon in th DSS code.

Convert malloc_tcache_flush() to a mallctl.

Convert malloc_swap_enable() to a set of mallctl's.
 2010-01-27 13:10:56 -08:00
Jason Evans
4201af0542 Add the --enable-swap configure option. 
Add malloc_swap_enable().

Add the O/o JEMALLOC_OPTIONS flags, which control memory overcommit.

Fix mapped memory stats reporting for arenas.
 2010-01-24 02:53:40 -08:00
Jason Evans
ed1bf457fb Add the w4opaque argument to numerous functions. 
Add the w4opaque argument malloc_message() and malloc_stats_print(), and
propagate the change through all the internal APIs as necessary.
 2010-01-19 12:11:25 -08:00
Jason Evans
b34e8684ec Add merged arena stats printing. 
Add the "m" and "a" opts flags for malloc_stats_print().
 2010-01-17 17:35:19 -08:00
Jason Evans
00b5c93347 Add the write4 parameter to malloc_stats_print(). 
Add malloc_cprintf() and malloc_vcprintf().
 2010-01-17 15:49:25 -08:00
Jason Evans
b0fd5016db Add the --with-install-suffix configure option. 
Fix some bugs in the Makefile's install target.
 2010-01-17 01:49:20 -08:00
Jason Evans
e9db6c92ab Add the S/s JEMALLOC_OPTIONS flags to enable/disable tcache bin sorting. 2010-01-03 16:17:52 -08:00
Jason Evans
279e09d1ff Enhance the H/h MALLOC_OPTIONS flags to control the number of tcache bin slots, 
rather than just enabling/disabling the tcache.

Fix an off-by-one bug in large object stats recording.
 2010-01-03 16:16:10 -08:00
Jason Evans
3f3ecfb8e8 Enhance the G/g MALLOC_OPTIONS flags to control GC sweep interval, rather than 
just enabling/disabling GC.
 2010-01-03 14:45:26 -08:00
Jason Evans
03c2237af3 Make malloc_stats_print() a public symbol, and make it repeatedly callable. 
Incrementally merge tcache stats, so that malloc_stats_print() always reports
at least most events that have occurred thus far.
 2010-01-03 12:10:42 -08:00
Jason Evans
0b2368a6a2 Add the COPYING file, and consolidate copyright/licensing information. 2010-01-03 11:59:14 -08:00
Jason Evans
45c128d1a9 Base maximum dirty page count on proportion of active memory. 
Add dirty page tracking for pages within active small/medium object runs.

Reduce chunks_dirty red-black tree operations via lazy updating.
 2009-12-29 00:09:15 -08:00
Jason Evans
84cbbcb90a Convert thread-specific caching from magazines, and implement incremental GC. 
Add the 'G'/'g' and 'H'/'h' MALLOC_OPTIONS flags.

Add the malloc_tcache_flush() function.

Disable thread-specific caching until the application goes multi-threaded.
 2009-12-29 00:09:15 -08:00
Jason Evans
b2378168a4 Add support for medium size classes, [4KiB..32KiB], 2KiB apart by default. 
Add the 'M' and 'm' MALLOC_OPTIONS flags, which control the maximum medium size
class.

Relax the cap on small/medium run size to arena_maxclass.

Reduce arena_run_reg_dalloc() integer division code complexity.

Increase the default chunk size from 1MiB to 4MiB.
 2009-12-29 00:09:15 -08:00
Jason Evans
6d7bb5357a Remove opt_dss and opt_mmap, such that if DSS allocation is enabled, both DSS 
and heap allocation are always enabled.
 2009-12-29 00:09:15 -08:00
Jason Evans
3ee7a5c5b0 Remove the dynamic rebalancing code, since magazines reduce its utility. 2009-12-29 00:09:15 -08:00
Jason Evans
569432cffd Implement thread-aware allocation event tracing. 2009-12-29 00:09:15 -08:00
Jason Evans
90895cf859 Add --with-jemalloc-prefix, which supports API mangling. 
Rename jemalloc_options-->malloc_options and jemalloc_message-->malloc_message.
 2009-12-29 00:09:15 -08:00
Jason Evans
cc00a15770 Clean up the manpage and conditionalize various portions according to how 
jemalloc is configured.

Modify arena_malloc() API to avoid unnecessary choose_arena() calls.  Remove
unnecessary code from choose_arena().

Enable lazy-lock by default, now that choose_arena() is both faster and out of
the critical path.

Implement objdir support in the build system.
 2009-06-25 18:06:48 -07:00
Jason Evans
4450b830b6 Merge FreeBSD's malloc(3) and posix_memalign(3) manpages to create jemalloc(3). 2009-06-22 17:44:39 -07:00