The merging of anon_vma and 4G/4G
Posted May 30, 2004 19:36 UTC (Sun) by
garloff (subscriber, #319)
Parent article:
The merging of anon_vma and 4G/4G
Two points:
(a) It is no miracle that nobody complains about the memory management
in 2.6.7-rc1. A large distributor has based their 2.6 kernel
on Andrea's patches and a lot of testing has happended on the
kernel with various desktop and enterprise workloads.
These tests have resulted in a number of bug reports, but they
have been analyzed and addressed quickly.
The good functioning is the result of the good design, the deep
understanding of MM by Andrea and the heavy testing.
(b) If 4:4 can be avoided, it should.
MySQL has shown some numbers at the user conference that showed
75% higher performance for the small working set when comparing
the RHAS smp(3:1) to the hugemem(4:4) kernels. For the large
working set, the 3:1 kernel was still 19% faster.
With the objrmap, anon_vma and prio_tree work, we can now avoid 4:4.
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