Hi Heinz, Sorry for the late response. On Thu, Jul 12, 2012 at 7:31 PM, Heinz Diehl <htd@xxxxxxxxxx> wrote: > On 12.07.2012, Suvayu Ali wrote: > >> 1. `fsync() on a file': Firefox, Google Chrome, pidgin, emacs >> 2. `Waiting for buffer IO to complete': jbd2/dm-* > [....] > > Fsync is expensive, but that's the way it is. > > If you're using cfq as your scheduler, try this in rc.local: > > echo "32" > /sys/block/sda/queue/iosched/quantum > echo "0" > /sys/block/sda/queue/iosched/slice_idle > echo "1" > /sys/block/sda/queue/iosched/low_latency > echo "51200" > /sys/block/sda/queue/nr_requests > > Together with this in /etc/sysctl.conf: > > vm.dirty_ratio = 10 > vm.dirty_background_ratio = 5 > I tend not to try things that I don't understand. Could please outline briefly what the above suggestions do? I would like to understand before I try them out. Thanks, -- Suvayu Open source is the future. It sets us free. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
