Comment 62 for bug 1023755

Just a curiosity... Isn't this related to the following BUGs:

Ubuntu server uses CFQ scheduler instead of deadline:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1008400

Kernel I/O scheduling writes starving reads, local DoS:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1064521

???

What can be done?

Edit the file: /etc/default/grub and add:

GRUB_CMDLINE_LINUX="elevator=deadline"

run:

update-grub
reboot

Test it again...

Best,
Thiago