d202218e86
This fixes two simple but significant typos in the HPA: - The conf string parsing accidentally set a min value of PAGE for hpa_sec_batch_fill_extra; i.e. allocating 4096 extra pages every time we attempted to allocate a single page. This puts us over the SEC flush limit, so we then immediately flush all but one of them (probably triggering purging). - The HPA was using the default PAI batch alloc implementation, which meant it did not actually get any locking advantages. This snuck by because I did all the performance testing without using the PAI interface or config settings. When I cleaned it up and put everything behind nice interfaces, I only did correctness checks, and didn't try any performance ones.
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 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://jemalloc.net/