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 -- 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