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SubjectRe: Calling current() from interrupt context
Based of my measurement on i386 smp configuration,

If a system has plenty of runnable tasks, schedule() produces
noticable amount of cache misses at runqueue-head traversing and the
goodness calculations.

David S. Miller writes:
> Some of us actually have instrumented it :-) I added a coloring
> mechanism to the task/kstack allocator on sparc64. It made no
> noticable difference whatsoever to any real life measurement I
> attempted.

Did you slide task-struct itself?

--
Computer Systems Laboratory, Fujitsu Labs.
kumon@flab.fujitsu.co.jp
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