Bug#669006: ata_piix poor performance on ich5

[Jonathan Nieder <jrnieder@gmail.com>]

Teemu Järvinen wrote:

> At first I noticed that NFS performance is low when tried to access this
> server, and any serious reading attempt leads nfsd consuming all the
> available cpu time. Later it became obvious that the local filesystem
> is to blame, it behaves like there is no DMA.

Please attach full "dmesg" output from booting and reproducing the problem.

Also, just to rule out a userspace (udev, etc) problem: if you install
the squeeze kernel on your wheezy/sid system, it doesn't reproduce the
problem, right?

Thanks,
Jonathan