Jason Evans
0b270a991d
Reduce statistical heap sampling memory overhead.
...
If the mean heap sampling interval is larger than one page, simulate
sampled small objects with large objects. This allows profiling context
pointers to be omitted for small objects. As a result, the memory
overhead for sampling decreases as the sampling interval is increased.
Fix a compilation error in the profiling code.
2010-03-31 16:45:04 -07:00
Jason Evans
698805c525
Simplify malloc_message().
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Rather than passing four strings to malloc_message(), malloc_write4(),
and all the functions that use them, only pass one string.
2010-03-03 17:45:38 -08:00
Jason Evans
9df0215f9b
Move sampling init into prof_alloc_prep().
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Move prof_sample_threshold initialization into prof_alloc_prep(),
before using it to decide whether to capture a backtrace.
2010-03-03 12:08:45 -08:00
Jason Evans
22ca855e8f
Allow prof.dump mallctl to specify filename.
2010-03-02 12:11:35 -08:00
Jason Evans
b9477e782b
Implement sampling for heap profiling.
2010-03-01 20:15:26 -08:00
Jason Evans
fbb504def6
Don't implicitly enable interval-based profiling.
2010-02-16 15:46:57 -08:00
Jason Evans
376b1529a3
Restructure source tree.
2010-02-11 14:45:59 -08:00
Jason Evans
d34f9e7e93
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.
2010-02-11 13:19:21 -08:00
Jason Evans
b01a6c2057
Add JEMALLOC_PROF_PREFIX support.
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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
c717718115
Dump /proc/<pid>/maps in heap profiles.
2010-02-11 09:25:56 -08:00
Jason Evans
3383af6c2d
Fix a profiling bootstrap bug.
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Bootstrap profiling in three stages, so that it is usable by the time
the first application allocation occurs.
2010-02-11 08:59:06 -08:00
Jason Evans
b27805b363
Various heap profiling improvements.
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Add the --disable-prof-libgcc configure option, and add backtracing
based on libgcc, which is used by default.
Fix a bug in hash().
Fix various configuration-dependent compilation errors.
2010-02-10 18:20:38 -08:00
Jason Evans
6109fe07a1
Implement allocation profiling and leack checking.
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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
