On Wed, 2 May 2007, [email protected] wrote:
> To stay on systems probably more familiar to the user who asked this question,
> there are also some 64 core X86_64 bot AMD and Intel out there, here the 2.6
> kernel is doing very well even on those intel CPU with shared L2 cache.
> I have some 16 and 32 core Opteron and never had scalability problems.
> You have to pay a lot of attention to your kernel configuration (100 HZ, just
> BKL preemption), and to the filesystems you decide to use.
It becomes a hardware issue at higher cpu counts. Commodity hardware is
not designed to handle these high processor counts thus workarounds like
listed above become necessary. Our 512 processor systems have been running
with 1024 HZ for a long time. Plus you really need a good filesystem
(XFS).
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