Commit Graph

2699 Commits

Author SHA1 Message Date
Qi Wang
927239b910 Cleanup smoothstep.sh / .h.
h_step_sum was used to compute moving sum.  Not in use anymore.
2017-05-25 16:52:10 -07:00
Qi Wang
1df18d7c83 Fix stats.mapped during deallocation. 2017-05-24 15:57:46 -07:00
Jason Evans
67c93c332a Refactor run_tests to increase parallelism.
Rather than relying on parallel make to build individual configurations
one at a time, use xargs to build multiple configurations in parallel.
This allows the configure scripts to run in parallel.  On a 14-core
system (28 hyperthreads), this increases average CPU utilization from
~20% to ~90%.
2017-05-24 15:55:19 -07:00
David Goldblatt
18ecbfa89e Header refactoring: unify and de-catchall mutex module 2017-05-24 15:27:30 -07:00
David Goldblatt
9f822a1fd7 Header refactoring: unify and de-catchall witness code. 2017-05-24 15:27:30 -07:00
Jason Evans
36195c8f4d Disable percpu_arena by default. 2017-05-23 15:32:50 -07:00
Jason Evans
196a53c2ae Do not assume dss never decreases.
An sbrk() caller outside jemalloc can decrease the dss, so add a
separate atomic boolean to explicitly track whether jemalloc is
concurrently calling sbrk(), rather than depending on state outside
jemalloc's full control.

This resolves #802.
2017-05-23 15:31:29 -07:00
Jason Evans
067b970130 Add dss:primary testing.
Generalize the run_tests.sh and .travis.yml test generation to handle
combinations of arguments to the --with-malloc-conf configure option,
and merge "dss:primary" into the existing "tcache:false" testing.
2017-05-23 15:31:29 -07:00
Jason Evans
9b1038d19c Do not hold the base mutex while calling extent hooks.
Drop the base mutex while allocating new base blocks, because extent
allocation can enter code that prohibits holding non-core mutexes, e.g.
the extent_[d]alloc() and extent_purge_forced_wrapper() calls in
extent_alloc_dss().

This partially resolves #802.
2017-05-23 15:31:29 -07:00
Qi Wang
eeefdf3ce8 Fix # of unpurged pages in decay algorithm.
When # of dirty pages move below npages_limit (e.g. they are reused), we should
not lower number of unpurged pages because that would cause the reused pages to
be double counted in the backlog (as a result, decay happen slower than it
should).  Instead, set number of unpurged to the greater of current npages and
npages_limit.

Added an assertion: the ceiling # of pages should be greater than npages_limit.
2017-05-23 13:48:30 -07:00
Qi Wang
0eae838b0d Check for background thread inactivity on extents_dalloc.
To avoid background threads sleeping forever with idle arenas, we eagerly check
background threads' sleep time after extents_dalloc, and signal the thread if
necessary.
2017-05-23 12:26:20 -07:00
Qi Wang
2c368284d2 Add tests for background threads. 2017-05-23 12:26:20 -07:00
Qi Wang
44559e7cf1 Add documentation for background_thread related options. 2017-05-23 12:26:20 -07:00
Qi Wang
5f5ed2198e Add profiling for the background thread mutex. 2017-05-23 12:26:20 -07:00
Qi Wang
2bee0c6251 Add background thread related stats. 2017-05-23 12:26:20 -07:00
Qi Wang
b693c7868e Implementing opt.background_thread.
Added opt.background_thread to enable background threads, which handles purging
currently.  When enabled, decay ticks will not trigger purging (which will be
left to the background threads).  We limit the max number of threads to NCPUs.
When percpu arena is enabled, set CPU affinity for the background threads as
well.

The sleep interval of background threads is dynamic and determined by computing
number of pages to purge in the future (based on backlog).
2017-05-23 12:26:20 -07:00
David Goldblatt
3f685e8824 Protect the rtree/extent interactions with a mutex pool.
Instead of embedding a lock bit in rtree leaf elements, we associate extents
with a small set of mutexes.  This gets us two things:

- We can use the system mutexes.  This (hypothetically) protects us from
  priority inversion, and lets us stop doing a backoff/sleep loop, instead
  opting for precise wakeups from the mutex.
- Cuts down on the number of mutex acquisitions we have to do (from 4 in the
  worst case to two).

We end up simplifying most of the rtree code (which no longer has to deal with
locking or concurrency at all), at the cost of additional complexity in the
extent code: since the mutex protecting the rtree leaf elements is determined by
reading the extent out of those elements, the initial read is racy, so that we
may acquire an out of date mutex.  We re-check the extent in the leaf after
acquiring the mutex to protect us from this race.
2017-05-19 14:21:27 -07:00
David Goldblatt
26c792e61a Allow mutexes to take a lock ordering enum at construction.
This lets us specify whether and how mutexes of the same rank are allowed to be
acquired.  Currently, we only allow two polices (only a single mutex at a given
rank at a time, and mutexes acquired in ascending order), but we can plausibly
allow more (e.g. the "release uncontended mutexes before blocking").
2017-05-19 14:21:27 -07:00
Jason Evans
6e62c62862 Refactor *decay_time into *decay_ms.
Support millisecond resolution for decay times.  Among other use cases
this makes it possible to specify a short initial dirty-->muzzy decay
phase, followed by a longer muzzy-->clean decay phase.

This resolves #812.
2017-05-18 11:33:45 -07:00
Qi Wang
baf3e294e0 Add stats: arena uptime. 2017-05-18 10:04:28 -07:00
Jason Evans
04fec5e084 Avoid over-rebuilding due to namespace mangling.
Take care not to touch generated namespace mangling headers unless their
contents would change.

This resolves #838.
2017-05-17 10:06:58 -07:00
Qi Wang
b8ba3c3132 Use srcroot path for private_namespace.sh. 2017-05-16 09:30:33 -07:00
Jason Evans
18a83681cf Refactor (MALLOCX_ARENA_MAX + 1) to be MALLOCX_ARENA_LIMIT.
This resolves #673.
2017-05-14 10:14:23 -07:00
Jason Evans
909f0482e4 Automatically generate private symbol name mangling macros.
Rather than using a manually maintained list of internal symbols to
drive name mangling, add a compilation phase to automatically extract
the list of internal symbols.

This resolves #677.
2017-05-11 23:06:54 -07:00
Jason Evans
a4ae9707da Remove unused private_unnamespace infrastructure. 2017-05-11 23:06:54 -07:00
Jason Evans
a268af5085 Stop depending on JEMALLOC_N() for function interception during testing.
Instead, always define function pointers for interceptable functions,
but mark them const unless testing, so that the compiler can optimize
out the pointer dereferences.
2017-05-11 23:06:54 -07:00
Jason Evans
b3b033eefd Do not build in parallel on AppVeyor.
The compiler database used by MSVC is increasingly becoming corrupt,
presumably due to concurrency-related corruption, despite the -FS
compiler flag being specified as recommended.
2017-05-11 23:06:54 -07:00
Arkady Shapkin
6f58e630b6 Update and rename INSTALL to INSTALL.md 2017-05-11 22:53:34 -07:00
Jason Evans
17ddddee10 Specify -Werror for run_tests builds. 2017-05-11 22:11:35 -07:00
Jason Evans
81ef365622 Avoid compiler warnings on Windows. 2017-05-11 18:06:20 -07:00
Jason Evans
11d2f39d96 Remove mutex_prof_data_t redeclaration.
Redeclaration causes compilations failures with e.g. gcc 4.2.1 on
FreeBSD.  This regression was introduced by
89e2d3c12b (Header refactoring: ctl -
unify and remove from catchall.).
2017-05-11 10:49:43 -07:00
Jason Evans
31baedbbb9 Add --with-version=VERSION .
This simplifies configuration when embedding a jemalloc release into
another project's git repository.

This resolves #811.
2017-05-03 10:45:43 -07:00
Jason Evans
0798fe6e70 Fix rtree_leaf_elm_szind_slab_update().
Re-read the leaf element when atomic CAS fails due to a race with
another thread that has locked the leaf element, since
atomic_compare_exchange_strong_p() overwrites the expected value with
the actual value on failure.  This regression was introduced by
0ee0e0c155 (Implement compact rtree leaf
element representation.).

This resolves #798.
2017-05-03 08:52:33 -07:00
Jason Evans
344dd342dd rtree_leaf_elm_extent_write() --> rtree_leaf_elm_extent_lock_write()
Refactor rtree_leaf_elm_extent_write() as
rtree_leaf_elm_extent_lock_write(), so that whether the leaf element is
currently acquired is separate from what lock state to write.  This
allows for a relaxed atomic read when releasing the lock.
2017-05-03 08:52:33 -07:00
rustyx
1c982c37d9 Make VS2015 project work again 2017-05-02 08:20:29 -07:00
Qi Wang
fc1aaf13fe Revert "Use trylock in tcache_bin_flush when possible."
This reverts commit 8584adc451.  Production
results not favorable.  Will investigate separately.
2017-05-01 14:49:42 -07:00
David Goldblatt
209f2926b8 Header refactoring: tsd - cleanup and dependency breaking.
This removes the tsd macros (which are used only for tsd_t in real builds).  We
break up the circular dependencies involving tsd.

We also move all tsd access through getters and setters.  This allows us to
assert that we only touch data when tsd is in a valid state.

We simplify the usages of the x macro trick, removing all the customizability
(get/set, init, cleanup), moving the lifetime logic to tsd_init and tsd_cleanup.
This lets us make initialization order independent of order within tsd_t.
2017-05-01 10:49:56 -07:00
Jason Evans
c86c8f4ffb Add extent_destroy_t and use it during arena destruction.
Add the extent_destroy_t extent destruction hook to extent_hooks_t, and
use it during arena destruction.  This hook explicitly communicates to
the callee that the extent must be destroyed or tracked for later reuse,
lest it be permanently leaked.  Prior to this change, retained extents
could unintentionally be leaked if extent retention was enabled.

This resolves #560.
2017-04-29 09:24:12 -07:00
Jason Evans
b9ab04a191 Refactor !opt.munmap to opt.retain. 2017-04-29 09:24:12 -07:00
Qi Wang
d901a37775 Revert "Use try_flush first in tcache_dalloc."
This reverts commit b0c2a28280.  Production
benchmark shows this caused significant regression in both CPU and memory
consumption.  Will investigate separately later on.
2017-04-28 10:59:04 -07:00
Qi Wang
5c56603e91 Inline tcache_bin_flush_small_impl / _large_impl. 2017-04-27 17:49:39 -07:00
Qi Wang
b0c2a28280 Use try_flush first in tcache_dalloc.
Only do must_flush if try_flush didn't manage to free anything.
2017-04-25 17:21:33 -07:00
Qi Wang
8584adc451 Use trylock in tcache_bin_flush when possible.
During tcache gc, use tcache_bin_try_flush_small / _large so that we can skip
items with their bins locked already.
2017-04-25 17:21:33 -07:00
Qi Wang
e2aad5e810 Remove redundant extent lookup in tcache_bin_flush_large. 2017-04-25 16:50:12 -07:00
Qi Wang
05775a3736 Avoid prof_dump during reentrancy. 2017-04-25 12:54:36 -07:00
David Goldblatt
268843ac68 Header refactoring: pages.h - unify and remove from catchall. 2017-04-25 09:51:38 -07:00
David Goldblatt
dab4beb277 Header refactoring: hash - unify and remove from catchall. 2017-04-25 09:51:38 -07:00
David Goldblatt
89e2d3c12b Header refactoring: ctl - unify and remove from catchall.
In order to do this, we introduce the mutex_prof module, which breaks a circular
dependency between ctl and prof.
2017-04-25 09:51:38 -07:00
Jason Evans
c67c3e4a63 Replace --disable-munmap with opt.munmap.
Control use of munmap(2) via a run-time option rather than a
compile-time option (with the same per platform default).  The old
behavior of --disable-munmap can be achieved with
--with-malloc-conf=munmap:false.

This partially resolves #580.
2017-04-24 20:37:16 -07:00
Jason Evans
e2cc6280ed Remove --enable-code-coverage.
This option hasn't been particularly useful since the original pre-3.0.0
push to broaden test coverage.

This partially resolves #580.
2017-04-24 16:33:04 -07:00