Messages in this thread | | | Date | Sat, 23 Jul 2011 20:41:31 +0200 | From | Jens Axboe <> | Subject | Re: [RFC PATCH 1/2] block: strict rq_affinity |
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On 2011-07-22 22:59, Dan Williams wrote: > Some storage controllers benefit from completions always being steered > to the strict requester cpu rather than the looser "per-socket" steering > that blk_cpu_to_group() attempts by default. > > echo 2 > /sys/block/<bdev>/queue/rq_affinity
I have applied this one, with a modified patch description.
I like the adaptive solution, but it should be rewritten to not declare and expose softirq internals. Essentially have an API from kernel/softirq.c that can return whether a given (or perhaps just local) softirq handler is busy or not.
-- Jens Axboe
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