Ian's blog

The boot drive on my file server has been really slow, hdparm was returning some really low numbers and CPU was spiking, which i wasn’t expecting on my new hardware. I decided this morning to do some google searches.

Here is the original hdparm results

sudo hdparm -t /dev/sdf
/dev/sdf:
Timing buffered disk reads: 4 MB in 3.56 seconds = 1.12 MB/sec


Then i added the following in /etc/modprobe.d/blacklist

blacklist ata_generic

and in /etc/initramfs-tools/modules added

pata_atiixp
blacklist ata_generic

rebuilt the initramfs

sudo update-initramfs -u -v

rebooted and now I get

sudo hdparm -t /dev/sdf
/dev/sdf:
Timing buffered disk reads: 220 MB in 3.02 seconds = 72.83 MB/sec


Tags: ata_generic, blacklist, hardy, ubuntu, ubuntu 8.04

This entry was posted on Friday, August 1st, 2008 at 12:23 pm and is filed under Technology. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.