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Jason Evans 8a03cf039c Implement cache index randomization for large allocations. 
Extract szad size quantization into {extent,run}_quantize(), and .
quantize szad run sizes to the union of valid small region run sizes and
large run sizes.

Refactor iteration in arena_run_first_fit() to use
run_quantize{,_first,_next(), and add support for padded large runs.

For large allocations that have no specified alignment constraints,
compute a pseudo-random offset from the beginning of the first backing
page that is a multiple of the cache line size.  Under typical
configurations with 4-KiB pages and 64-byte cache lines this results in
a uniform distribution among 64 page boundary offsets.

Add the --disable-cache-oblivious option, primarily intended for
performance testing.

This resolves #13.
2015-05-06 13:27:39 -07:00
bin Rename pprof to jeprof. 2015-05-01 12:31:12 -07:00
doc Rename pprof to jeprof. 2015-05-01 12:31:12 -07:00
include Implement cache index randomization for large allocations. 2015-05-06 13:27:39 -07:00
src Implement cache index randomization for large allocations. 2015-05-06 13:27:39 -07:00
test Fix signed/unsigned comparison in arena_lg_dirty_mult_valid(). 2015-03-24 15:59:28 -07:00
.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 Rename pprof to jeprof. 2015-05-01 12:31:12 -07:00
autogen.sh Move repo contents in jemalloc/ to top level. 2011-03-31 20:36:17 -07:00
ChangeLog Implement cache index randomization for large allocations. 2015-05-06 13:27:39 -07:00
config.guess Update config.{guess,sub} to more recent versions, to add better support to OpenRISC/or1k (among others) 2014-07-29 23:15:26 +01:00
config.stamp.in Move repo contents in jemalloc/ to top level. 2011-03-31 20:36:17 -07:00
config.sub Fixed iOS build after OR1 changes 2014-09-12 07:24:28 +03:00
configure.ac Implement cache index randomization for large allocations. 2015-05-06 13:27:39 -07:00
COPYING Update copyright dates for 2015. 2015-01-22 16:03:00 -08:00
coverage.sh Add test code coverage analysis. 2013-12-06 18:50:51 -08:00
INSTALL Implement cache index randomization for large allocations. 2015-05-06 13:27:39 -07:00
install-sh Move repo contents in jemalloc/ to top level. 2011-03-31 20:36:17 -07:00
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 Clean up bin/jeprof in distclean build target. 2015-05-05 15:43:34 -07:00
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/