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[Xen-users] poor harddisk performance HVM domain (Windows 2003 guest)

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] poor harddisk performance HVM domain (Windows 2003 guest)
From: Joost van den Broek <joost@xxxxxxxxxxxxx>
Date: Thu, 4 May 2006 16:25:39 +0200
Cc: David Goodlad <dgoodlad@xxxxxxxxx>
Delivery-date: Thu, 04 May 2006 07:26:39 -0700
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I am now running into another problem, the networking one has been solved 
(thanks Dave). As I posted to my previous thread, the poor networking 
performance is most probably caused by the harddisk. Running some 
benchmarks gives a max of 10MB/s read throughput, while write activities 
don't go beyond 5MB/s. The guest's write cache on the disk is enabled.

I tried both image and physical disk partition, no difference. The CPU and 
memory benchmarks on the other hand, are close to native. So the bottleneck 
is definitely the (virtual) harddisk.

Dave (and ofcourse others), what is your experience, do you have better 
read/write results?

- Joost

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