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Author SHA1 Message Date
David Goldblatt
a9fa2defdb Add JEMALLOC_COLD, and mark some functions cold. 
This hints to the compiler that it should care more about space than CPU (among
other things).  In cases where the compiler lacks profile-guided information,
this can be a substantial space savings.

For now, we mark the mallctl or atexit driven profiling and stats functions that
take up the most space.
 2021-01-04 14:55:49 -08:00
David Goldblatt
5d8e70ab26 prof_recent: cassert(config_prof) more often. 
This tells the compiler that these functions are never called, which lets them
be optimized away in builds where profiling is disabled.
 2021-01-04 14:55:49 -08:00
David Goldblatt
83cad746ae prof_log: cassert(config_prof) in public functions 
This lets the compiler infer that the code is dead in builds where profiling is
enabled, saving on space there.
 2021-01-04 14:55:49 -08:00
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
063a767ffe Define JEMALLOC_HAS_ALLOCA_H for QNX 
QNX has <alloca.h>
 2020-12-18 10:05:59 -08:00
Jin Qian
4e3fe218e9 Use posix_madvise to purge pages when available 2020-12-18 10:05:59 -08:00
Jin Qian
26c1dc5a3a Support AutoConf for posix_madvise and POSIX_MADV_DONTNEED 2020-12-18 10:05:59 -08:00
Jin Qian
96a59c3bb5 Fix recursive malloc during bootstrap on QNX 
pthread_key_create on QNX triggers recursive allocation during tsd
bootstrapping. Using tsd_init_check_recursion to detect that.

Before pthread_key_create, the address of tsd_boot_wrapper is returned
from tsd_get_wrapper instead of using TLS to store the pointer.
tsd_set_wrapper becomes a no-op. After that, the address of
tsd_boot_wrapper is written to TLS and bootstrap continues as before.

Signed-off-by: Jin Qian <jqian@aurora.tech>
 2020-12-18 10:05:59 -08:00
Jin Qian
986cbe4881 Disable JEMALLOC_TLS for QNX 
TLS access triggers recurisive malloc during bootstrapping. Need to use
pthread_getspecific and pthread_setspecific with a follow up fix.
 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
Yinan Zhang
e82771807e Cache mallctl mib for batch allocation stress test 2020-12-07 09:10:11 -08:00
Yinan Zhang
0dfdd31e0f Add tiny batch size to batch allocation stress test 2020-12-07 09:10:11 -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
f51948d9e1 psset unit test: fix a bug. 
The next commit adds assertions that reveal a bug in the test code
(double-free).  Fix it.
 2020-12-07 06:21:08 -08:00
David Goldblatt
54c94c1679 flat bitmap: add scount / ucount functions. 
These can compute the number or set or unset bits in a subrange of the bitmap.
 2020-12-07 06:21:08 -08:00
David Goldblatt
e6c057ad35 fb: implement assign in terms of a visitor. 
We'll reuse this visitor in the next commit.
 2020-12-07 06:21:08 -08:00
David Goldblatt
734e72ce8f bit_util: Guarantee popcount's presence. 
Implement popcount generically, so that we can rely on it being present.
 2020-12-07 06:21:08 -08:00
David Goldblatt
d9f7e6c668 hpdata: Add a test. 
We're about to make the functionality here more complicated; testing hpdata
directly (rather than relying on user's tests) will make debugging easier.
 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
4a15008cfb HPA unit test: skip if unsupported. 
Previously, we replicated the logic in hpa_supported in the test as well.
 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
63677dde63 Pages: Statically detect if pages_huge may succeed 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
Igor Wiedler
99c2d6c232 Backport jeprof --collapse for flamegraph generation 2020-12-04 10:48:21 -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