Messages in this thread | | | From | Peter Chubb <> | Date | Thu, 24 Jul 2003 09:32:48 +1000 | Subject | Re: [Lse-tech] [patch 2.6.0-test1] per cpu times |
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>>>>> "bill" == bill davidsen <davidsen@tmr.com> writes: >>>>> "Mike" == Mike Kravetz <kravetz@us.ibm.com>
Mike> On a somewhat related note ... We (Big Blue) have a Mike> performance reporting application that would like to know how Mike> long a task sits on a runqueue before it is actually given the Mike> CPU. In other words, it wants to know how long the 'runnable Mike> task' was delayed due to contention for the CPU(s). Of Mike> course, one could get an overall feel for this based on total Mike> runqueue length. However, this app would really like this Mike> info on a per-task basis.
bill> This is certainly a useful number.
This is exactly what's measured by the microstate accounting patches I've been pushing to LKML, along with a few other useful statistics.
If you try it, please let me know: see http://marc.theaimsgroup.com/?l=linux-kernel&m=105884469205748&w=2
-- Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au You are lost in a maze of BitKeeper repositories, all slightly different. - 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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