Xen users - Jan 2010 - performance

Probably the performance issue comes along once in a while, sometimes related to
mal-functioning hardware or misconfiguration.

But i wonder if something in general could  be said about reachable targets:
*       Disk-io
*       Network-io

Considering disk-io, obviously one is limited by the weakest link in the chain
(underlying real-disk or network)
Same about network-io, when connecting to other (physical) machines.
But the network connection dom-U/dom-0, what are here the limitations?


hw


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Hi,

 

Dom-U to Dom0 networking performance is often software/driver limited. A
paravirt VM will perform much better than an HVM here, James Harper is a
developer for the Windows GPL-PV drivers, he would likely have much more
detail if you need it.

 

Rob

 

From: xen-users-bounces@lists.xensource.com
[mailto:xen-users-bounces@lists.xensource.com] On Behalf Of
J.Witvliet@MINDEF.NL
Sent: 18 January 2010 12:31
To: xen-users@lists.xensource.com
Subject: [Xen-users] performance

 

Probably the performance issue comes along once in a while, sometimes
related to mal-functioning hardware or misconfiguration.

 

But i wonder if something in general could  be said about reachable
targets:

*         Disk-io

*         Network-io

 

Considering disk-io, obviously one is limited by the weakest link in the
chain (underlying real-disk or network)

Same about network-io, when connecting to other (physical) machines.

But the network connection dom-U/dom-0, what are here the limitations?

 

 

hw

 

 

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aan
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