Messages in this thread |  | | Subject | Re: [patch] voluntary-preempt-2.6.8.1-P5 | From | Lee Revell <> | Date | Fri, 20 Aug 2004 22:51:35 -0400 |
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On Fri, 2004-08-20 at 09:30, Ingo Molnar wrote: > i've uploaded the -P5 patch: > > http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.8.1-P5
> - added a preempt_count field to /proc/latency_trace. This makes it > easier to spot IRQ contexts and generally it gives a nice overview of > how the preemption depth changes. It should also help us debug > those 900usec weirdnesses related to cpu_idle. (if they still occur) >
Ok, disregard my question about what this field was.
> - made the tcp packet-queue collapsing dependent on VOLUNTARY_PREEMPT. >
I am seeing ~180usec latencies related to netif_receive_skb:
http://krustophenia.net/testresults.php?dataset=2.6.8.1-P6#/var/www/2.6.8.1-P6/trace5.txt
Lee
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