Hi and thanks for your reply :) On Friday 12 October 2007, you wrote: > i have no quick ideas - the behavior you are seeing is quite unexpected. > Could you try the current sched-devel code: > > > http://redhat.com/~mingo/cfs-scheduler/devel/sched-devel-combo-v2.6.23.patc >h Maybe I messed something up. I first applied that patch and tested. Then reversed the patch with patch -R ... but in both cases the output of the cfs-debug-info script contained: Sched Debug Version: v0.05-v20
> > since this version of CFS does various things differently then the one > in v2.6.23, lets see whether perturbing it makes any difference to your > throughput. Without Hog: ~15MB/s With Hog: ~19/MBs > > you could also try the scheduler backport to v2.6.22.10, at: > > http://redhat.com/~mingo/cfs-scheduler/ with sched-cfs-v2.6.22.9-v22.patch applied to 2.6.22.10 (I didn't spot one for 2.6.22.10): Without Hog: ~14MB/s With Hog: ~19MB/s > > that would establish whether it's the changes in scheduling that cause > this or something else. Plus please enable CONFIG_SCHED_DEBUG and > CONFIG_SCHEDSTATS and run this debug script while such a transfer is > going on: > > http://people.redhat.com/mingo/cfs-scheduler/tools/cfs-debug-info.sh > > and send me the resulting file. I created one for each tested kernel with $ while true; do echo test>/dev/null; done running and without. I'll send you the files in private. Thanks for your time. Regards, Andreas - 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/
