Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 18 Jul 2003 12:57:47 -0700 | From | William Lee Irwin III <> | Subject | Re: [Lse-tech] [patch 2.6.0-test1] per cpu times |
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On Fri, Jul 18, 2003 at 11:18:50AM -0700, Mike Kravetz wrote: > On a somewhat related note ... > We (Big Blue) have a performance reporting application that > would like to know how long a task sits on a runqueue before > it is actually given the CPU. In other words, it wants to > know how long the 'runnable task' was delayed due to contention > for the CPU(s). Of course, one could get an overall feel for > this based on total runqueue length. However, this app would > really like this info on a per-task basis. > Does anyone else think this type of info would be useful? > A patch to compute/export this info should be straight forward > to implement.
I wrote something to collect the standard queueing statistics a while back but am not sure what I did with it. I think Rick Lindsley might still have a copy around.
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