Udev: Changing SSD’s default (CFQ) I/O Scheduler
Courtesy of falconindy @ #archlinux
1 2 3 4 5 | # set a larger readahead size ACTION=="add|change", KERNEL=="sd[a-z]", ATTR{queue/read_ahead_kb}="1024" # set deadline scheduler for non-rotating disks ACTION=="add|change", KERNEL=="sd[a-z]", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="deadline" |
To verify:
$ cat /sys/block/sda/queue/scheduler noop [deadline] cfq |