Bad generic_ata with ubuntu on another computer

So I noticed another of my ubuntu boxes was running slow so I did a

Host:~$ sudo hdparm -t /dev/sda

/dev/sda:
Timing buffered disk reads: 8 MB in 3.72 seconds = 2.15 MB/sec

so it looks like it has the same issue as my other machine

so I did
Host:~$ sudo lspci |grep -i ide
00:0f.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
Host:~$ lsmod |grep -i ^libata
libata 159344 4 pata_acpi,pata_via,ata_generic,sata_via

and added the following to /etc/modprobe.d/blacklist

blacklist ata_generic

and the following to /etc/initramfs-tools/modules

pata_via
blacklist ata_generic

then rebuild initramfs


sudo update-initramfs -u -v

After a reboot I now get

sudo hdparm -t /dev/sda

/dev/sda:
Timing buffered disk reads: 164 MB in 3.02 seconds = 54.38 MB/sec

Amazing what this little tweak will do for performance.

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