RE: [Xen-users] hvm performance

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Tony Hoyle
> Sent: 29 May 2007 13:07
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] hvm performance
> 
> Petersson, Mats wrote:
> > Is there any chance you can check "strings
> > /usr/lib64/xen/bin/qemu-dm|grep QEMU" - the first line should be the
> > version number. Is that 0.8.2 or 0.9.0? The latter is 
> apparently having
> > problems in SOME distributions. 
> 
> QEMU PC emulator version 0.8.2, Copyright (c) 2003-2005 
> Fabrice Bellard
> 
> Is it worth trying to get hold of a 0.9.0 version and testing 
> that, or 
> isn't there much difference?

No, there shouldn't be much of a difference in performance. The reason I
asked was the other way around - if for some reason they'd decided to
use 0.9.0, there's a problem in some setups when the Python script
creates the qemu-dm that some SIGNAL to indicate that the hard-disk IO
is finished isn't being forwarded to qemu-dm, which means that it only
accepts one hard-disk request per time-out period - there is a patch to
fix this, but it's only a couple of days old. 

--
Mats
> 
> Tony
> 
> 
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