On 20.08.2013, Mihai T. Lazarescu wrote: > Here are the program numbers while running the script: > > CFQ: [....] Seems that cfq performs better on your machine, under this workload. Gave it a quick test (using the original fsync-tester from Ted Tso): cfq: htd@kiera test]$ ./fst1 fsync time: 3.3269 fsync time: 1.4869 fsync time: 2.4756 fsync time: 8.4763 fsync time: 11.4740 fsync time: 9.4753 fsync time: 16.4822 fsync time: 8.4712 ^C dl: htd@kiera test]$ ./fst1 fsync time: 0.2231 fsync time: 1.1388 fsync time: 0.4851 fsync time: 2.1329 fsync time: 0.9891 fsync time: 0.5336 fsync time: 1.5352 fsync time: 0.3914 fsync time: 0.7822 ^C I run an OCZ Vertex 4, filesystem is XFS mounted with "rw,noatime,attr2,discard,nobarrier,inode64,logbufs=8,logbsize=256k,noquota". These are my deadline parameters: echo "deadline" > /sys/block/sda/queue/scheduler echo "0" > /sys/block/sda/queue/iosched/front_merges echo "8" > /sys/block/sda/queue/iosched/fifo_batch These are the disk "tunings": /sbin/hdparm -W1 /dev/sda /sbin/blockdev --setra 8192 /dev/sda -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
