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Date: Wed, 26 Sep 2007 23:17:17 +0300 (EEST) From: Timo Jantunen <jeti@...ho.com> To: Willy Tarreau <w@....eu> cc: Francois Romieu <romieu@...zoreil.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: commit 6dccd16b7c2703e8bbf8bca62b5cf248332afbe2 kills r8169 send performance On Wed, 26 Sep 2007, Willy Tarreau wrote: > On Wed, Sep 26, 2007 at 09:52:02PM +0300, Timo Jantunen wrote: > > On Wed, 26 Sep 2007, Francois Romieu wrote: > > > The patch below is scheduled for inclusion before 2.6.23. Please try it and > > > see if it makes a difference on top of 2.6.23-rc8 (full dmesg will be welcome > > > too). > > Thanks for the quick reply and fix. Unfortunately the fix didn't help in my > > case. > > In another thread on LKML today, there has been some discussion about a > similar problem, which is caused by a locking bug in iperf which makes > it spin at 100% CPU. Ingo has posted a fix for this, please check the list. I noticed the problem originally with another program (playback of 720p video to remote X using mplayer). And in my case the CPU usage is 2-3% systime, <1% userspace so it doesn't seem to be anything to do with the scheduler (I did try that "echo 1 > /proc/sys/kernel/sched_compat_yield" workaround, too.) //T > Regards, > Willy - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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