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Dave Watson 4a0dbb5ac8 Use pairing heap for arena->runs_avail 
Use pairing heap instead of red black tree in arena runs_avail.  The
extra links are unioned with the bitmap_t, so this change doesn't use
any extra memory.

Canaries show this change to be a 1% cpu win, and 2% latency win.  In
particular, large free()s, and small bin frees are now O(1) (barring
coalescing).

I also tested changing bin->runs to be a pairing heap, but saw a much
smaller win, and it would mean increasing the size of arena_run_s by two
pointers, so I left that as an rb-tree for now.
2016-03-08 13:48:27 -08:00
bin Pass retain and exclude parameters to /pprof/symbol. 2016-01-29 19:59:06 -08:00
build-aux Use AC_CONFIG_AUX_DIR([build-aux]). 2015-11-12 11:23:39 -08:00
doc Make *allocx() size class overflow behavior defined. 2016-02-25 15:29:49 -08:00
include Use pairing heap for arena->runs_avail 2016-03-08 13:48:27 -08:00
msvc Fix MSVC project and improve MSVC lib naming (v140 -> vc140) 2016-02-29 21:04:29 +01:00
src Use pairing heap for arena->runs_avail 2016-03-08 13:48:27 -08:00
test Unittest for pairing heap 2016-03-08 13:48:27 -08:00
.autom4te.cfg Disable autom4te cache. 2014-09-02 17:49:29 -07:00
.gitattributes fix git handling of newlines on windows 2014-05-07 18:48:39 -04:00
.gitignore Add MS Visual Studio 2015 support 2016-02-20 10:55:23 -08:00
autogen.sh Move repo contents in jemalloc/ to top level. 2011-03-31 20:36:17 -07:00
ChangeLog Replace contributor name with github account. 2016-03-07 17:55:55 -08:00
config.stamp.in Move repo contents in jemalloc/ to top level. 2011-03-31 20:36:17 -07:00
configure.ac Compile with -Wshorten-64-to-32. 2016-02-24 13:03:48 -08:00
COPYING Update copyright dates for 2016. 2016-02-28 15:20:40 -08:00
coverage.sh Add test code coverage analysis. 2013-12-06 18:50:51 -08:00
INSTALL Add --with-malloc-conf. 2016-02-19 20:29:06 -08:00
jemalloc.pc.in Take into account the install suffix that jemalloc was built with in the pkg-config file. 2015-02-13 12:46:19 -08:00
Makefile.in Unittest for pairing heap 2016-03-08 13:48:27 -08:00
README Update README. 2013-10-20 19:38:19 -07:00

README 

jemalloc is a general purpose malloc(3) implementation that emphasizes
fragmentation avoidance and scalable concurrency support.  jemalloc first came
into use as the FreeBSD libc allocator in 2005, and since then it has found its
way into numerous applications that rely on its predictable behavior.  In 2010
jemalloc development efforts broadened to include developer support features
such as heap profiling, Valgrind integration, and extensive monitoring/tuning
hooks.  Modern jemalloc releases continue to be integrated back into FreeBSD,
and therefore versatility remains critical.  Ongoing development efforts trend
toward making jemalloc among the best allocators for a broad range of demanding
applications, and eliminating/mitigating weaknesses that have practical
repercussions for real world applications.

The COPYING file contains copyright and licensing information.

The INSTALL file contains information on how to configure, build, and install
jemalloc.

The ChangeLog file contains a brief summary of changes for each release.

URL: http://www.canonware.com/jemalloc/