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A Scalable Concurrent malloc(3) Implementation for FreeBSD

The FreeBSD project has been engaged in ongoing work to provide scalable support for multi-processor computer systems since version 5. Sufficient progress has been made that the C library's malloc(3) memory allocator is now a potential bottleneck for multi-threaded applications running on multi-processor systems. In this paper, I present a new memory allocator that builds on the state of the art to provide scalable concurrent allocation for applications. Benchmarks indicate that with this allocator, memory allocation for multi- threaded applications scales well as the number of processors increases. At the same time, single-threaded allocation performance is on par with the previous allocator implementation.

speaker: Jason Evans

location: SITE A0150

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