Messages in this thread | | | Date | Mon, 4 Aug 2003 20:31:19 -0700 | From | William Lee Irwin III <> | Subject | Re: [PATCH] O11int for interactivity |
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William Lee Irwin III wrote: >> Well, I was vaguely hoping a useful way to instrument the io stuff >> would already be out there.
On Tue, Aug 05, 2003 at 01:23:08PM +1000, Nick Piggin wrote: > Not really. > For a process doing blocking reads you could measure the time > from when a process submits a read to when it gets the result. > I suppose you also need some minimum rate too but I really can't > see that being the problem here.
I'm at least aware of patches for 2.4.x that log io scheduling decisions in the driver, which is basically what I was hoping for.
On a higher level, are you thinking there's some indication the io schedulers themselves aren't involved? Or that something higher- level should be instrumented? If so, what?
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