Bug#520928: linux-image-2.6.26-1-686: PIIX4 /dev/hda performance regression (10x times, DMA dissabled)

2011-01-22 Thread Witold Baryluk
Hi. I tested for a week kernel 2.6.32-5-686-xen on xen 4.0 from squeeze. Essentially perfromance is still very bad. It is slightly better (about 2-2.5 MB/s, instead of 1.5 MB/s), but still makes this useless). One still cannot even enforce using DMA. -- Witold Baryluk signature.asc Descrip

Bug#520928: linux-image-2.6.26-1-686: PIIX4 /dev/hda performance regression (10x times, DMA dissabled)

2009-03-23 Thread root
Package: linux-image-2.6.26-1-686 Version: 2.6.26-13lenny2 Severity: important I have 450NX server board (two cpu Xeon II 450MHz). My ide controler is PIIX4. I found that after update to lenny's 2.6.26-1-xen-686 IDE performance droped to just 1.50MB/s (hdparm -t). With 2.6.18-6-xen-686 I had 21.

Bug#520928: linux-image-2.6.26-1-686: PIIX4 /dev/hda performance regression (10x times, DMA dissabled)

2009-10-18 Thread Ben Hutchings
On Mon, 2009-03-23 at 18:36 +0100, root wrote: > Package: linux-image-2.6.26-1-686 > Version: 2.6.26-13lenny2 > Severity: important > > > I have 450NX server board (two cpu Xeon II 450MHz). My ide controler is PIIX4. > > I found that after update to lenny's 2.6.26-1-xen-686 IDE performance drope

Bug#520928: linux-image-2.6.26-1-686: PIIX4 /dev/hda performance regression (10x times, DMA dissabled)

2009-10-20 Thread Witold Baryluk
On 10-19 03:07, Ben Hutchings wrote: > On Mon, 2009-03-23 at 18:36 +0100, root wrote: > > Package: linux-image-2.6.26-1-686 > > Version: 2.6.26-13lenny2 > > Severity: important > > > So it looks like there is some blacklist (in piix modules) for this server > > board, > > and kernel uses generic (

Bug#520928: linux-image-2.6.26-1-686: PIIX4 /dev/hda performance regression (10x times, DMA dissabled)

2009-10-20 Thread Ben Hutchings
On Tue, 2009-10-20 at 16:52 +0200, Witold Baryluk wrote: > On 10-19 03:07, Ben Hutchings wrote: > > On Mon, 2009-03-23 at 18:36 +0100, root wrote: > > > Package: linux-image-2.6.26-1-686 > > > Version: 2.6.26-13lenny2 > > > Severity: important > > > > > So it looks like there is some blacklist (in