The original jemalloc source tree was modified to: 1. Remove the configure error that prevents nested builds. 2. Insert the Redis private Jemalloc API in order to allow the Redis fragmentation function to work.
Not a single bug in about 3 months, and our previous version was too old (3.2.0).
Full changelog here: http://www.canonware.com/cgi-bin/gitweb.cgi?p=jemalloc.git;a=blob_plain;f=ChangeLog;hb=master Notable improvements from the point of view of Redis: 1) Bugfixing. 2) Support for Valgrind. 3) Support for OSX Lion, FreeBSD.