* Ingo Molnar <[EMAIL PROTECTED]> [2007-09-26 13:21]: > > > I noticed on the iperf website a patch which contains sched_yield(). > > > http://dast.nlanr.net/Projects/Iperf2.0/patch-iperf-linux-2.6.21.txt > > great! Could you try this too: > echo 1 > /proc/sys/kernel/sched_compat_yield > > does it fix iperf performance too (with the yield patch applied to > iperf)?
Yes, this gives me good performance too. > I think the real fix would be for iperf to use blocking network IO > though, or maybe to use a POSIX mutex or POSIX semaphores. So it's definitely not a bug in the kernel, only in iperf? (CCing Stephen Hemminger who wrote the iperf patch.) -- Martin Michlmayr http://www.cyrius.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
