Messages in this thread | | | Date | Sat, 12 Aug 2006 18:09:44 -0700 (PDT) | Subject | Re: softirq considered harmful | From | David Miller <> |
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From: Andrew Morton <akpm@osdl.org> Date: Sat, 12 Aug 2006 17:45:49 -0700
> Is that also adding 150 usecs to each IO operation?
I have no idea, Jens hasn't done enough to narrow down the true cause of the latencies he is seeing. So pinpointing it on anything specific is highly premature at this stage.
My point was merely to encourage you to find out the facts before tossing accusations around. :-) I/O completions via softirqs aren't some new thing, in general, as the SCSI example shows, and GIT didn't even exist when the scsi command completion via softirq changes went in.
Heck I think even Eric Youngdale was still an active developer of our SCSI stack back then, that's a long time ago! :-) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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