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1012 Commits

Author SHA1 Message Date
Latchesar Ionkov
a32b7bd567 Mallctl: Add arenas.lookup 
Implement a new mallctl operation that allows looking up the arena a
region of memory belongs to.
 2018-05-01 13:14:36 -07:00
Qi Wang
b8f4c730ef Remove an incorrect assertion. 
Background threads are created without holding the global background_thread
lock, which mean paused state is possible (and fine).
 2018-04-18 14:17:08 -07:00
Qi Wang
dedfeecc4e Invoke dlsym() on demand. 
If no lazy lock or background thread is enabled, avoid dlsym pthread_create on
boot.
 2018-04-18 11:20:21 -07:00
David Goldblatt
c95284df1a Avoid a resource leak down extent split failure paths. 
Previously, we would leak the extent and memory associated with a salvageable
portion of an extent that we were trying to split in three, in the case where
the first split attempt succeeded and the second failed.
 2018-04-18 08:19:41 -07:00
Qi Wang
e40b2f75bd Fix abort_conf processing. 
When abort_conf is set, make sure we always error out at the end of the options
processing loop.
 2018-04-17 18:23:53 -07:00
Qi Wang
0fadf4a2e3 Add UNUSED to avoid compiler warnings. 2018-04-16 13:50:21 -07:00
Qi Wang
3f0dc64c6b Allow setting extent hooks on uninitialized auto arenas. 
Setting extent hooks can result in initializing an unused auto arena.  This is
useful to install extent hooks on auto arenas from the beginning.
 2018-04-11 21:21:54 -07:00
Jason Evans
4937309620 Silence a compiler warning. 2018-04-10 17:59:00 -07:00
Dave Watson
8b14f3abc0 background_thread: add max thread count config 
Looking at the thread counts in our services, jemalloc's background thread
is useful, but mostly idle.  Add a config option to tune down the number of threads.
 2018-04-10 14:01:45 -07:00
Rajeev Misra
5f51882a0a Stack address should not be used for ordering mutexes 2018-04-10 10:16:57 -07:00
Qi Wang
d3e0976a2c Fix type warning on Windows. 
Add cast since read / write has unsigned return type on windows.
 2018-04-09 16:50:30 -07:00
Qi Wang
4df483f0fd Fix arguments passed to extent_init. 2018-04-09 16:35:58 -07:00
Qi Wang
2dccf45640 Control idump and gdump with prof_active. 2018-04-09 16:35:14 -07:00
Dave Watson
6d02421730 extents: Remove preserve_lru feature. 
preserve_lru feature adds lots of complication, for little value.
Removing it means merged extents are re-added to the lru list, and may
take longer to madvise away than they otherwise would.

Canaries after removal seem flat for several services (no change).
 2018-04-02 12:40:28 -07:00
Qi Wang
21eb0d15a6 Fix a background_thread shutdown issue. 
1) make sure background thread 0 is always created; and 2) fix synchronization
between thread 0 and the control thread.
 2018-04-02 10:03:47 -07:00
Qi Wang
956c4ad6b5 Change mutable option output in stats to avoid stringify issues. 2018-03-15 14:42:48 -07:00
Qi Wang
baffeb1d0a Fix a typo in stats. 2018-03-15 14:42:48 -07:00
David Goldblatt
4c36cd2cc5 Stats printing: Convert arena large stats to use emitter. 
This completes the conversion; we now have only structured text output.
 2018-03-09 11:47:17 -08:00
David Goldblatt
4eed989bbf Stats printing: convert arena bin stats to use emitter. 2018-03-09 11:47:17 -08:00
David Goldblatt
a9f3cedc6e Stats printing: remove a spurious newline. 
This was left over from a previous emitter conversion.  It didn't affect the
correctness of the output.
 2018-03-09 11:47:17 -08:00
David Goldblatt
a1738f4efd Stats printing: Make arena mutex stats use the emitter. 2018-03-09 11:47:17 -08:00
David Goldblatt
07fb707623 Stats printing: convert most per-arena stats to use the emitter. 2018-03-09 11:47:17 -08:00
David Goldblatt
8fc850695d Stats printing: convert paging and alloc counts to use the emitter. 2018-03-09 11:47:17 -08:00
David Goldblatt
bc6620f73e Stats printing: convert decay stats to use the emitter. 2018-03-09 11:47:17 -08:00
David Goldblatt
a6ef061c43 Stats printing: Move emitter cutoff point into stats_arena_print. 2018-03-09 11:47:17 -08:00
David Goldblatt
cbde666d9a Stats printing: move stats_print_helper to use emitter. 2018-03-09 11:47:17 -08:00
David Goldblatt
86c61d4a57 Stats printing: Move global mutex stats to use emitter. 2018-03-09 11:47:17 -08:00
David Goldblatt
9e1846b004 Stats printing: move non-mutex arena stats to the emitter. 
Another step in the conversion process.  The mutex is a little different,
because we we want to emit it as an array.
 2018-03-09 11:47:17 -08:00
David Goldblatt
8076b28721 Stats printing: Remove explicit callback passing to stats_print_helper. 
This makes the emitter the only source of callback information, which is a step
towards where we want to be.
 2018-03-09 11:47:17 -08:00
David Goldblatt
0d20eda127 Stats printing: Move emitter -> manual cutoff point. 
This makes it so that the "general" portion of the stats code is completely
agnostic to emitter type.
 2018-03-09 11:47:17 -08:00
David Goldblatt
ec31d476ff Stats printing: Convert profiling stats to use the emitter. 
While we're at it, print them in table form, too.
 2018-03-09 11:47:17 -08:00
David Goldblatt
e5acc35400 Stats printing: Convert general arena stats to use the emitter. 2018-03-09 11:47:17 -08:00
David Goldblatt
4a335e0c6f Stats printing: convert config and opt output to use emitter. 
This is a step along the path towards using the emitter for all stats output.
 2018-03-09 11:47:17 -08:00
David Goldblatt
b646f89173 Stats printing: Convert header and footer to use emitter. 2018-03-09 11:47:17 -08:00
Qi Wang
e4f090e8df Add opt.thp which allows explicit hugepage usage. 
"always" marks all user mappings as MADV_HUGEPAGE; while "never" marks all
mappings as MADV_NOHUGEPAGE. The default setting "default" does not change any
settings.  Note that all the madvise calls are part of the default extent hooks
by design, so that customized extent hooks have complete control over the
mappings including hugepage settings.
 2018-03-08 13:08:06 -08:00
Qi Wang
efa40532dc Remove config.thp which wasn't in use. 2018-03-08 13:08:06 -08:00
David Goldblatt
26b1c13982 Background threads: fix an indexing bug. 
We have a buffer overrun that manifests in the case where arena indices higher
than the number of CPUs are accessed before arena indices lower than the number
of CPUs.  This fixes the bug and adds a test.
 2018-02-27 19:43:05 -08:00
Christopher Ferris
f78d4ca3fb Modify configure to determine return value of strerror_r. 
On glibc and Android's bionic, strerror_r returns char* when
_GNU_SOURCE is defined.

Add a configure check for this rather than assume glibc is the
only libc that behaves this way.
 2018-01-10 21:01:18 -08:00
Qi Wang
ba5992fe9a Improve the fit for aligned allocation. 
We compute the max size required to satisfy an alignment.  However this can be
quite pessimistic, especially with frequent reuse (and combined with state-based
fragmentation).  This commit adds one more fit step specific to aligned
allocations, searching in all potential fit size classes.
 2018-01-05 14:27:58 -08:00
Rajeev Misra
f47e39d11a handle 32 bit mutex counters 2018-01-04 11:08:17 -08:00
David Goldblatt
d41b19f9c7 Implement arena regind computation using div_info_t. 
This eliminates the need to generate an enormous switch statement in
arena_slab_regind.
 2017-12-21 14:25:43 -08:00
David Goldblatt
21f7c13d0b Add the div module, which allows fast division by dynamic values. 2017-12-21 14:25:43 -08:00
David T. Goldblatt
7f1b02e3fa Split up and standardize naming of stats code. 
The arena-associated stats are now all prefixed with arena_stats_, and live in
their own file.  Likewise, malloc_bin_stats_t -> bin_stats_t, also in its own
file.
 2017-12-18 16:29:10 -08:00
David T. Goldblatt
901d94a2b0 Rename cache_alloc_easy to cache_bin_alloc_easy. 
This lives in the cache_bin module; just a typo.
 2017-12-18 16:29:10 -08:00
David T. Goldblatt
8aafa270fd Move bin stats code from arena to bin module. 2017-12-18 16:29:10 -08:00
David T. Goldblatt
48bb4a056b Move bin forking code from arena to bin module. 2017-12-18 16:29:10 -08:00
David T. Goldblatt
a8dd8876fb Move bin initialization from arena module to bin module. 2017-12-18 16:29:10 -08:00
David T. Goldblatt
4bf4a1c4ea Pull out arena_bin_info_t and arena_bin_t into their own file. 
In the process, kill arena_bin_index, which is unused.  To follow are several
diffs continuing this separation.
 2017-12-18 16:29:10 -08:00
Qi Wang
740bdd68b1 Over purge by 1 extent always. 
When purging, large allocations are usually the ones that cross the npages_limit
threshold, simply because they are "large".  This means we often leave the large
extent around for a while, which has the downsides of: 1) high RSS and 2) more
chance of them getting fragmented.  Given that they are not likely to be reused
very soon (LRU), let's over purge by 1 extent (which is often large and not
reused frequently).
 2017-12-18 12:57:07 -08:00
Qi Wang
5e0332890f Output opt.lg_extent_max_active_fit in stats. 2017-12-14 15:49:15 -08:00