RE: [Xen-devel] IDE drives

["Neugebauer, Rolf" <rolf.neugebauer@xxxxxxxxx>]

This seems quiet slow.

Can you check the xen boot message for a warning if PIO is used? That
might explain. I think there was something on the xen-devel list a while
back. There might be two mentioning of PIO (or at least I think that
used to be the case) one of them might be wrong. 

Rolf


> -----Original Message-----
> From: xen-devel-admin@xxxxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> admin@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of David Becker
> Sent: 24 March 2004 14:34
> To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] IDE drives
> 
> 
> I'm seeing quite slow IDE write performance on Xenolinux-1.2
> Native linux writes at 30MB/s to an ext2 fs, and Xenolinux DOM0 gets
> about 2MB/s (this is not a virtual disk extent).   hdparm doesn't work
> under xenolinux, but that is only part of the problem.  Native linux
> writes at 6MB/s without any hdparm tuning.
> 
> The SCSI hosts seem fine.  native linux writes to scsi at 36MB/s and
> xen at 28MB/s.
> 
> Is the IDE speed about what I should expect for xen-1.2 or did I screw
> up my configuration?
> 
> 
> 
> 
> 
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