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1738 Commits

Author SHA1 Message Date
David Goldblatt
526180b76d Extent.c: Avoid an rtree NULL-check. 
The edge case in which pages_map returns (void *)PAGE can trigger an incorrect
assertion failure.  Avoid it.
 2021-01-04 14:50:49 -08:00
Yinan Zhang
b35ac00d58 Do not bump to large size for page aligned request 2020-12-29 17:09:58 -08:00
Yinan Zhang
8a56d6b636 Add last-N mutex stats 2020-12-29 09:44:19 -08:00
Yinan Zhang
22d62d8cbd Handle ending gap properly for HPA stats 2020-12-18 16:40:57 -08:00
Yinan Zhang
6c5a3a24dd Omit bin stats rows with no data 2020-12-18 16:40:57 -08:00
Yinan Zhang
ea013d8fa4 Enforce realloc sizing stability 2020-12-18 11:41:52 -08:00
Yinan Zhang
74bd63b203 Optimize stats print using partial name-to-mib 2020-12-18 10:39:58 -08:00
Yinan Zhang
4557c0a67d Enable ctl on partial mib and partial name 2020-12-18 10:39:58 -08:00
Yinan Zhang
006dd0414e Add partial name-to-mib functionality 2020-12-18 10:39:58 -08:00
Yinan Zhang
f2e1a5be77 Do not fail on partial ctl path for ctl_nametomib() 
We do not fail on partial ctl path when the given `mib` array is
shorter than the given name, and we should keep the behavior the
same in the reverse case, which I feel is also the more natural way.
 2020-12-18 10:39:58 -08:00
Yinan Zhang
6ab181d2b7 Extract node lookup given mib input 2020-12-18 10:39:58 -08:00
Yinan Zhang
3a627b9674 No need to record all nodes in ctl_lookup() 2020-12-18 10:39:58 -08:00
Yinan Zhang
91e006c4c2 Enable ctl_lookup() to start from arbitrary node 2020-12-18 10:39:58 -08:00
Jin Qian
4e3fe218e9 Use posix_madvise to purge pages when available 2020-12-18 10:05:59 -08:00
David Goldblatt
1e3b8636ff HPA: Remove unused malloc_conf options. 2020-12-08 12:10:48 -08:00
Aditya Kumar
9522ae41d6 Move n_search outside of assert as reported by static analyzer 2020-12-07 06:49:27 -08:00
David Goldblatt
a559caf74a hpdata: Strengthen assertions. 
Now that we have flat bitmap bit counting functions, we can easily assert that
nfree is always correct.  While we're tightening up this code, enforce
consistency on API boundaries as well.
 2020-12-07 06:21:08 -08:00
David Goldblatt
3ed0b4e8a3 HPA: Add an nevictions counter. 
I.e. the number of times we've purged a hugepage-sized region.
 2020-12-07 06:21:08 -08:00
David Goldblatt
fffcefed33 malloc_conf: Clarify HPA options. 2020-12-07 06:21:08 -08:00
David Goldblatt
f7cf23aa4d psset: Relegate alloc/dalloc to test code. 
This is no longer part of the "core" functionality; we only need the stub
implementations as an end-to-end test of hpdata + psset interactions when
metadata is being modified.  Treat them accordingly.
 2020-12-07 06:21:08 -08:00
David Goldblatt
f9299ca572 HPA: Use psset fit/insert/remove. 
This will let us remove alloc_new and alloc_reuse functions from the psset.
 2020-12-07 06:21:08 -08:00
David Goldblatt
0971e1e4e3 hpdata: Use addr/size instead of begin/npages. 
This is easier for the users of the hpdata.
 2020-12-07 06:21:08 -08:00
David Goldblatt
5228d869ee psset: Use fit/insert/remove as basis functions. 
All other functionality can be implemented in terms of these; doing so (while
retaining the same API) will be convenient for subsequent refactors.
 2020-12-07 06:21:08 -08:00
David Goldblatt
089f8fa442 Move hpdata bitmap logic out of the psset. 2020-12-07 06:21:08 -08:00
David Goldblatt
ca30b5db2b Introduce hpdata_t. 
Using an edata_t both for hugepages and the allocations within those hugepages
was convenient at first, but has outlived its usefulness.  Representing
hugepages explicitly, with their own data structure, will make future
development easier.
 2020-12-07 06:21:08 -08:00
David Goldblatt
43af63fff4 HPA: Manage whole hugepages at a time. 
This redesigns the HPA implementation to allow us to manage hugepages all at
once, locally, without relying on a global fallback.
 2020-12-07 06:21:08 -08:00
David Goldblatt
c1b2a77933 psset: Move in stats. 
A later change will benefit from having these functions pulled into a
psset-module set of functions.
 2020-12-07 06:21:08 -08:00
David Goldblatt
d0a991d47b psset: Add insert/remove functions. 
These will allow us to (for instance) move pageslabs from a psset dedicated to
not-yet-hugeified pages to one dedicated to hugeified ones.
 2020-12-07 06:21:08 -08:00
David Goldblatt
d438296b1f narenas_ratio: Accept fractional values. 
With recent scalability improvements to the HPA, we're experimenting with much
lower arena counts; this gets annoying when trying to test across different
hardware configurations using only the narenas setting.
 2020-12-04 23:48:19 -08:00
David Goldblatt
ecd39418ac Add fxp: A fixed-point math library. 
This will be used in the next commit to allow non-integer values for
narenas_ratio.
 2020-12-04 23:48:19 -08:00
David Carlier
520b75fa2d utrace support with label based signature. 2020-11-30 11:43:00 -08:00
Yinan Zhang
92e189be8b Add some comments to the batch allocation logic flow 2020-11-16 20:58:01 -08:00
Yinan Zhang
d96e4525ad Route batch allocation of small batch size to tcache 2020-11-16 20:58:01 -08:00
Yinan Zhang
566c4a8594 Slight changes to cache bin internal functions 2020-11-16 20:58:01 -08:00
Yinan Zhang
9545c2cd36 Add sample interval to prof last-N dump 2020-11-13 15:33:27 -08:00
David Goldblatt
cf2549a149 Add a per-arena oversize_threshold. 
This can let manual arenas trade off memory and CPU the way auto arenas do.
 2020-11-13 13:45:35 -08:00
David Goldblatt
4ca3d91e96 Rename geom_grow -> exp_grow. 
This was promised in the review of the introduction of geom_grow, but would have
been painful to do there because of the series that introduced it.  Now that
those are comitted, renaming is easier.
 2020-11-13 13:42:33 -08:00
David Goldblatt
b4c37a6e81 Rename edata_tree_t -> edata_avail_t. 
This isn't a tree any more, and it mildly irritates me any time I see it.
 2020-11-13 13:42:11 -08:00
David Carlier
95f0a77fde Detect pthread_getname_np explicitly. 
At least one libc (musl) defines pthread_setname_np without defining
pthread_getname_np. Detect the presence of each individually, rather than
inferring both must be defined if set is.
 2020-11-11 17:31:22 -08:00
David Goldblatt
589638182a Use the edata_cache_small_t in the HPA. 2020-11-05 12:34:43 -08:00
David Goldblatt
03a6047111 Edata cache small: rewrite. 
In previous designs, this was intended to be a sort of cache that couldn't fail.
In the current design, we want to use it just as a contention reduction
mechanism.  Rewrite it with those goals in mind.
 2020-11-05 12:34:43 -08:00
David Goldblatt
c9757d9e3b HPA: Don't disable shards that were never started. 2020-11-05 12:34:43 -08:00
David Goldblatt
1b3ee75667 Add experimental.thread.activity_callback. 
This (experimental, undocumented) functionality can be used by users to track
various statistics of interest at a finer level of granularity than the thread.
 2020-11-05 12:33:25 -08:00
David Carlier
d2d941017b MADV_DO[NOT]DUMP support equivalence on FreeBSD. 2020-11-02 09:15:15 -08:00
DC
ef6d51ed44 DragonFlyBSD build support. 2020-10-27 12:35:19 -07:00
Qi Wang
bf72188f80 Allow opt.tcache_max to accept small size classes. 
Previously all the small size classes were cached.  However this has downsides
-- particularly when page size is greater than 4K (e.g. iOS), which will result
in much higher SMALL_MAXCLASS.

This change allows tcache_max to be set to lower values, to better control
resources taken by tcache.
 2020-10-24 20:43:44 -07:00
David Goldblatt
ea32060f9c SEC: Implement thread affinity. 
For now, just have every thread pick a shard once and stick with it.
 2020-10-23 11:14:34 -07:00
David Goldblatt
d16849c91d psset: Do first-fit based on slab age. 
This functions more like the serial number strategy of the ecache and
hpa_central_t.  Longer-lived slabs are more likely to continue to live for
longer in the future.
 2020-10-23 11:14:34 -07:00
David Goldblatt
634ec6f50a Edata: add an "age" field. 2020-10-23 11:14:34 -07:00
David Goldblatt
6599651aee PA: Use an SEC in fron of the HPA shard. 2020-10-23 11:14:34 -07:00
David Goldblatt
ea51e97bb8 Add SEC module: a small extent cache. 
This can be used to take pressure off a more centralized, worse-sharded
allocator without requiring a full break of the arena abstraction.
 2020-10-23 11:14:34 -07:00
David Goldblatt
1964b08394 HPA: Add stats for the hpa_shard. 2020-10-23 11:14:34 -07:00
David Goldblatt
534504d4a7 HPA: add size-exclusion functionality. 
I.e. only allowing allocations under or over certain sizes.
 2020-10-23 11:14:34 -07:00
David Goldblatt
484f04733e HPA: Add central mutex contention stats. 2020-10-23 11:14:34 -07:00
David Goldblatt
bf025d2ec8 HPA: Make slab sizes and maxes configurable. 
This allows easy experimentation with them as tuning parameters.
 2020-10-23 11:14:34 -07:00
David Goldblatt
1c7da33317 HPA: Tie components into a PAI implementation. 2020-10-23 11:14:34 -07:00
Qi Wang
c8209150f9 Switch from opt.lg_tcache_max to opt.tcache_max 
Though for convenience, keep parsing lg_tcache_max.
 2020-10-22 20:40:41 -07:00
Yinan Zhang
5ba861715a Add thread name in prof last-N records 2020-10-20 15:58:24 -07:00
Qi Wang
5e41ff9b74 Add a hard limit on tcache max size class. 
For locality reasons, tcache bins are integrated in TSD.  Allowing all size
classes to be cached has little benefit, but takes up much thread local storage.
In addition, it complicates the layout which we try hard to optimize.
 2020-10-16 13:49:51 -07:00
Qi Wang
3de19ba401 Eagerly detect double free and sized dealloc bugs for large sizes. 2020-10-15 10:03:16 -07:00
David Goldblatt
be9548f2be Tcaches: Fix a subtle race condition. 
Without a lock held continuously between checking tcaches_past and incrementing
it, it's possible for two threads to go down manual creation path
simultaneously.  If the number of tcaches is one less than the maximum, it's
possible for both to create a tcache and increment tcaches_past, with the second
thread returning a value larger than TCACHES_MAX.
 2020-10-13 15:06:16 -07:00
Qi Wang
a9aa6f6d0f Fix the alloc_ctx check in free_fastpath. 
The sanity check requires a functional TSD, which free_fastpath only guarantees
after the threshold branch.  Move the check function to afterwards.
 2020-10-12 19:02:27 -07:00
David Goldblatt
b971f7c4dd Add "default" option to slab sizes. 
This comes in handy when overriding earlier settings to test alternate ones.  We
don't really include tests for this, but I claim that's OK here:
- It's fairly straightforward
- It's fairly hard to test well
- This entire code path is undocumented and mostly for our internal
  experimentation in the first place.
- I tested manually.
 2020-10-07 12:54:29 -07:00
David Goldblatt
21b70cb540 Add hpa_central module 
This will be the centralized component of the coming hugepage allocator; the
source of larger chunks of memory from which smaller ones can be obtained.
 2020-10-05 19:55:57 -07:00
David Goldblatt
1ed7ec369f Emap: Add emap_assert_not_mapped. 
The counterpart to emap_assert_mapped, it lets callers check that some edata is
not already in the emap.
 2020-10-05 19:55:57 -07:00
David Goldblatt
259c5e3e8f psset: Add stats 2020-09-18 12:39:25 -07:00
David Goldblatt
018b162d67 Add psset: a set of pageslabs. 
This introduces a new sort of edata_t; a pageslab, and a set to manage them.
This is part of a series of a commits to implement a hugepage allocator; the
pageset will be per-arena, and track small page allocations requests within a
larger extent allocated from a centralized hugepage allocator.
 2020-09-18 12:39:25 -07:00
David Goldblatt
e034500698 Edata: rename "ranged" bit to "pai". 
This better represents its intended purpose; the hugepage allocator design
evolved away from needing contiguity of hugepage virtual address space.
 2020-09-18 12:39:25 -07:00
Yinan Zhang
b549389e4a Correct usize in prof last-N record 2020-09-09 13:31:35 -07:00
Yinan Zhang
202f01d4f8 Fix szind computation in profiling 2020-08-27 15:52:25 -07:00
Yinan Zhang
20f2479ed7 Do not create size class tables for non-prof builds 2020-08-24 20:10:02 -07:00
Yinan Zhang
8efcdc3f98 Move unbias data to prof_data 2020-08-24 20:10:02 -07:00
David Goldblatt
5e90fd006e Geom_grow: Don't keep the mutex internal. 
We're about to use it in ways that will have external synchronization.
 2020-08-19 16:53:21 -07:00
David Goldblatt
c57494879f Geom_grow: Don't take tsdn at init. 
It's never used.
 2020-08-19 16:53:21 -07:00
David Goldblatt
ffe552223c Geom_grow: Move in advancing logic. 2020-08-19 16:53:21 -07:00
David Goldblatt
131b1b5338 Rename ecache_grow -> geom_grow. 
We're about to start using it outside of the ecaches, in the HPA central
allocator.
 2020-08-19 16:53:21 -07:00
David Goldblatt
7b187360e9 IO: Support 0-padding for unsigned numbers. 2020-08-13 10:03:15 -07:00
David Goldblatt
ab274a23b9 Add narenas_ratio. 
This allows setting arenas per cpu dynamically, rather than forcing the user to
know the number of CPUs in advance if they want a particular CPU/space tradeoff.
 2020-08-12 16:41:57 -07:00
Yinan Zhang
743021b63f Fix size miscalculation bug in reallocation 2020-08-11 11:56:43 -07:00
David Goldblatt
eaed1e39be Add sized-delete size-checking functionality. 
The existing checks are good at finding such issues (on tcache flush), but not
so good at pinpointing them.  Debug mode can find them, but sometimes debug mode
slows down a program so much that hard-to-hit bugs can take a long time to
crash.

This commit adds functionality to keep programs mostly on their fast paths,
while also checking every sized delete argument they get.
 2020-08-05 19:34:05 -07:00
David Goldblatt
53084cc5c2 Safety check: Don't directly abort. 
The sized dealloc checks called the generic safety_check_fail, and then called
abort.  This means the failure case isn't mockable, hence not testable.  Fix it
in anticipation of a coming diff.
 2020-08-05 19:34:05 -07:00
David Goldblatt
60993697d8 Prof: Add prof_unbias. 
This gives more accurate attribution of bytes and counts to stack traces,
without introducing backwards incompatibilities in heap-profile parsing tools.
We track the ideal reported (to the end user) number of bytes more carefully
inside core jemalloc.  When dumping heap profiles, insteading of outputting our
counts directly, we output counts that will cause parsing tools to give a result
close to the value we want.

We retain the old version as an opt setting, to let users who are tracking
values on a per-component basis to keep their metrics stable until they decide
to switch.
 2020-08-05 18:33:55 -07:00
David Goldblatt
81c2f841e5 Add a simple utility to detect profiling bias. 2020-08-05 18:33:55 -07:00
Yinan Zhang
f6cf5eb388 Add mallctl for batch allocation API 2020-07-31 09:16:50 -07:00
Yinan Zhang
978f830ee3 Add batch allocation API 2020-07-31 09:16:50 -07:00
Yinan Zhang
f805468957 Add zero option to arena batch allocation 2020-07-31 09:16:50 -07:00
Yinan Zhang
49e5c2fe7d Add batch allocation from fresh slabs 2020-07-31 09:16:50 -07:00
Yinan Zhang
f28cc2bc87 Extract bin shard selection out of bin locking 2020-07-31 09:16:50 -07:00
David Goldblatt
1ed0288d9c bit_util: Change ffs functions indexing. 
Making these 0-based instead of 1-based makes calling code simpler and will be
more consistent with functions introduced in subsequent diffs.
 2020-07-30 15:25:23 -07:00
Yinan Zhang
fb347dc618 Verify output space before doing heavy work in mallctl 2020-07-27 09:48:35 -07:00
Yinan Zhang
f5fb4e5a97 Modify mallctl output length when needed 
This is the only reason why `oldlenp` was designed to be in the form
of a pointer.
 2020-07-27 09:48:35 -07:00
Yinan Zhang
4258402047 Corrections for prof_log_start() 2020-07-22 13:34:49 -07:00
Yinan Zhang
e6cb7a1c9b Shorten wait time for peak events 2020-07-14 09:00:33 -07:00
David Goldblatt
6107857b7b PA->PAC: Move in PAI implementation. 2020-07-09 13:41:04 -07:00
David Goldblatt
6041aaba97 PA -> PAC: Move in destruction functions. 2020-07-09 13:41:04 -07:00
David Goldblatt
cbf096b05e Arena: remove redundant bg inactivity check. 2020-07-09 13:41:04 -07:00
David Goldblatt
471eb5913c PAC: Move in decay rate setting. 2020-07-09 13:41:04 -07:00
David Goldblatt
6a2774719f PA->PAC: Move in decay functions. 2020-07-09 13:41:04 -07:00
David Goldblatt
4ee75be3a3 PA -> PAC: Move in decay_purge enum. 2020-07-09 13:41:04 -07:00
David Goldblatt
72435b0aba PA->PAC: Make extent.c forget about PA. 2020-07-09 13:41:04 -07:00
David Goldblatt
dee5d1c42d PA->PAC: Move in extent_sn. 2020-07-09 13:41:04 -07:00
David Goldblatt
7391382349 PA->PAC: Move in stats. 2020-07-09 13:41:04 -07:00
David Goldblatt
db211eefbf PAC: Move in decay. 2020-07-09 13:41:04 -07:00
David Goldblatt
c81e389996 PAC: Move in ecache_grow. 2020-07-09 13:41:04 -07:00
David Goldblatt
65803171a7 PAC: move in emap 2020-07-09 13:41:04 -07:00
David Goldblatt
7efcb946c4 PAC: Add an init function. 2020-07-09 13:41:04 -07:00
David Goldblatt
722652222a PAC: Move in edata_cache accesses. 2020-07-09 13:41:04 -07:00
David Goldblatt
777b0ba965 Add PAC: Page allocator classic. 
For now, this is just a stub containing the ecaches, with no surrounding code
changed.  Eventually all the core allocator bits will be moved in, in the
subsequent stack of commits.
 2020-07-09 13:41:04 -07:00
David Goldblatt
1b5f632e0f Introduce PAI: Page allocator interface 2020-07-09 13:41:04 -07:00
David Goldblatt
f1f4ec315a Tcache: Tweak nslots_max tuning parameter. 
In making these settings configurable, 634afc4124
unintentially changed a tuning parameter (reducing the "goal" max by a factor of
4).  This commit undoes that change.
 2020-07-09 08:58:05 -07:00
David Goldblatt
392f645f4d Edata: split up different list linkage uses. 2020-07-08 13:20:59 -07:00
David Carlier
00f06c9beb enabling mpss on solaris/illumos. 
reusing slighty linux configuration as possible, aligning the
 address range to HUGEPAGE.
 2020-07-06 09:59:10 -07:00
Yinan Zhang
c2e7a06392 No need to intercept prof_dump_header() in tests 2020-06-29 14:27:50 -07:00
Yinan Zhang
f58ebdff7a Generalize prof_cnt_all() for testing 2020-06-29 14:27:50 -07:00
Yinan Zhang
80d18c18c9 Pass prof dump parameters explicitly in prof_sys 2020-06-29 14:27:50 -07:00
Yinan Zhang
d4259ea53b Simplify signatures for prof dump functions 2020-06-29 14:27:50 -07:00
Yinan Zhang
5d823f3a91 Consolidate struct definitions for prof dump parameters 2020-06-29 14:27:50 -07:00
Yinan Zhang
1f5fe3a3e3 Pass write callback explicitly in prof_data 2020-06-29 14:27:50 -07:00
Yinan Zhang
4556d3c0c8 Define structures for prof dump parameters 2020-06-29 14:27:50 -07:00
Yinan Zhang
1c6742e6a0 Migrate prof dumping to use buffered writer 2020-06-29 14:27:50 -07:00
Yinan Zhang
dad821bb22 Move unwind to prof_sys 2020-06-29 14:27:50 -07:00
Yinan Zhang
d128efcb6a Relocate a few prof utilities to the right modules 2020-06-29 14:27:50 -07:00
Yinan Zhang
4736fb4fc9 Move file handling logic in prof_data to prof_sys 2020-06-29 14:27:50 -07:00
Yinan Zhang
767a2e1790 Move file handling logic in prof to prof_sys 2020-06-29 14:27:50 -07:00
Yinan Zhang
03ae509f32 Create prof_sys module for reading system thread name 2020-06-29 14:27:50 -07:00
Yinan Zhang
adfd9d7b1d Change tsdn to tsd for thread name allocation 2020-06-29 14:27:50 -07:00
Yinan Zhang
841af2b426 Move thread name handling to prof_data module 2020-06-29 14:27:50 -07:00
Yinan Zhang
c8683bee80 Unify printing for prof counts object 2020-06-29 14:27:50 -07:00
Yinan Zhang
5d292b5660 Push error handling logic out of core dumping logic 2020-06-29 14:27:50 -07:00
Yinan Zhang
354183b10d Define prof dump buffer size centrally 2020-06-29 14:27:50 -07:00
Yinan Zhang
7455813e57 Make dump file writing replaceable in test 2020-06-29 14:27:50 -07:00
Yinan Zhang
21e44c45d9 Make maps file opening replaceable in test 2020-06-29 14:27:50 -07:00
Yinan Zhang
4bb4037dbe Extract utility function for opening maps file 2020-06-29 14:27:50 -07:00
Yinan Zhang
f307b25804 Only replace the dump file opening function in test 2020-06-29 14:27:50 -07:00
Yinan Zhang
d460333efb Improve naming for prof system thread name option 2020-06-24 14:32:01 -07:00
Yinan Zhang
092fcac0b4 Remove unnecessary source files 2020-06-19 12:15:44 -07:00
Yinan Zhang
a795b19327 Remove beginning define in source files 
```
sed -i "/^#define JEMALLOC_[A-Z_]*_C_$/d" src/*.c;
```
 2020-06-19 12:15:44 -07:00
Yinan Zhang
24bbf376ce Unify arena flag reading and selection 2020-06-19 11:06:05 -07:00
Yinan Zhang
e128b170a0 Do not fallback to auto arena when manual arena is requested 2020-06-19 11:06:05 -07:00
Yinan Zhang
95a59d2f72 Unify tcache flag reading and selection 2020-06-19 11:06:05 -07:00
Yinan Zhang
4b0c008489 Unify zero flag reading and setting 2020-06-19 11:06:05 -07:00
Yinan Zhang
2a84f9b8fc Unify alignment flag reading and computation 2020-06-19 11:06:05 -07:00
Yinan Zhang
b7858abfc0 Expose prof testing internal functions 2020-06-19 09:16:51 -07:00
Yinan Zhang
40fa6674a9 Fix prof timestamp conf reading 2020-06-17 16:02:51 -07:00
David Goldblatt
40672b0b78 Remove duplicate logging in malloc. 2020-06-16 10:33:55 -07:00
Jon Haslam
4aea743279 High Resolution Timestamps for Profiling 2020-06-15 12:12:49 -07:00
David Goldblatt
d82a164d0d Add thread.peak.[read|reset] mallctls. 
These can be used to track net allocator activity on a per-thread basis.
 2020-06-11 13:54:22 -07:00
Yinan Zhang
3e19ebd2ea Add lock to protect prof last-N dumping 2020-06-09 17:03:05 -07:00
Yinan Zhang
a835d9cf85 Make prof last-N dumping non-blocking 2020-06-09 17:03:05 -07:00
Yinan Zhang
fc8bc4b5c0 Increase dump buffer for prof last-N list 2020-06-09 17:03:05 -07:00