Comment 4 for bug 1008400

I tried install latest Ubuntu Server image on my machine and confirmed that we are using CFQ for default IO scheduler for both server and desktop now.

Hark, we merged -server and -generic kernel image together for easier maintenance and most difference can be switched via kernel command line or user space interface. As Leann said, we can add "elevator=deadline" in kernel boot command line to use Deadline I/O scheduler by default. Or just change /sys/block/DEV/queue/scheduler from CFQ to deadline.

If it's necessary, I'm think about add some script to do this in our server image. But that probably related to grub, upstart init script or other user space utils not kernel issue now.

-Bryan