Messages in this thread | | | Subject | Re: [patch] voluntary-preempt-2.6.8.1-P7 | From | Lee Revell <> | Date | Mon, 23 Aug 2004 19:49:29 -0400 |
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On Mon, 2004-08-23 at 15:43, Ingo Molnar wrote: > * Lee Revell <rlrevell@joe-job.com> wrote: > > > to file a bug report. Traces can be found here: > > > > http://krustophenia.net/2.6.8.1-P7 > > re the skb latencies: Mark H Johnson managed to reduce net-input > latencies by decreasing /proc/sys/net/core/netdev_max_backlog to 8 - > could you try this, does it help? (you could try an even more extreme > setting like 4.) >
Spoke too soon with my last report. I am actually still seeing latencies close to 200 usecs in netdev_process_backlog. Reducing netdev_max_backlog to 4, then 2 did not seem to help.
netdev_process_backlog = 4:
http://krustophenia.net/testresults.php?dataset=2.6.8.1-P8#/var/www/2.6.8.1-P8/trace9.txt
netdev_process_backlog = 2:
http://krustophenia.net/testresults.php?dataset=2.6.8.1-P8#/var/www/2.6.8.1-P8/trace12.txt
Lee
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