Ingo Molnar wrote: > * Oliver Pinter (Pintér Olivér) <oliver.pntr@xxxxxxxxx> wrote: > > and then please update to CFS-v24.1 > > http://people.redhat.com/~mingo/cfs-scheduler/sched-cfs-v2.6.22.15-v24.1 > >.patch > > > > > Yes with CFSv20.4, as in the log. > > > > > > It also hangs on 2.6.23.13 > > my feeling is that this is some sort of timing dependent race in > konqueror/kde/qt that is exposed when a different scheduler is put in. > > If it disappears with CFS-v24.1 it is probably just because the timings > will change again. Would be nice to debug this on the konqueror side and > analyze why it fails and how. You can probably tune the timings by > enabling SCHED_DEBUG and tweaking /proc/sys/kernel/*sched* values - in > particular sched_latency and the granularity settings. Setting wakeup > granularity to 0 might be one of the things that could make a > difference. Thanks Ingo, but Mike suggested that data=writeback may make a difference, which it does indeed. So the bug seems to be related to data=ordered, although I haven't gotten any feedback from the ext3 gurus yet. Seems rather critical though, as data=writeback is a dangerous mode to run. Thanks! -- Al - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
