By Camuel Gilyadov, on October 11th, 2010

How scalable is linux kernel on 48-core machine?

According to this excellent and comprehensive research with some kernel hacking ~x33 speedup (compared to single core) is possible. For example PostgreSQL running on 48 cores gives ~x4  out of the box and after kernel/postgreSQL patches are applied it grows to ~x33. Assuming IO can keep up of course.

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