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For PAC, to avoid having too many bins, arena bins still have the same layout. This means some extra search is needed for a page-level request that is not aligned with the orginal size class: it should also search the heap before the current index since the previous heap might also be able to have some allocations satisfying it. The same changes apply to HPA's psset. This search relies on the enumeration of the heap because not all allocs in the previous heap are guaranteed to satisfy the request. To balance the memory and CPU overhead, we currently enumerate at most a fixed number of nodes before concluding none can satisfy the request during an enumeration. |
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| config.stamp.in | ||
| configure.ac | ||
| COPYING | ||
| INSTALL.md | ||
| jemalloc.pc.in | ||
| Makefile.in | ||
| README | ||
| run_tests.sh | ||
| TUNING.md | ||
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: https://jemalloc.net/