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[Xen-users] Poor hard disk performance on xen-3/dom0

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Subject: [Xen-users] Poor hard disk performance on xen-3/dom0
From: "Woon Wai Keen @ doubleukay.com" <doubleukay@xxxxxxxxxxxxxx>
Date: Sat, 24 Dec 2005 05:49:31 +0800
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On a vanilla 2.6.12 kernel, I get:
  60MB/s for hdparm -t /dev/sd[a|b] (on an Intel ICH7 SATA controller).
  30MB/s for hdparm -t /dev/hda (Intel ICH7)

On the xen dom0 kernel, I get 20MB/s for all three devices. Xen is compiled with the following:

xen_changeset          : Fri Dec  9 11:05:06 2005 +0000 8311:53cff3f88e45
cc_compiler            : gcc version 3.3.5 (Debian 1:3.3.5-13)

Does anyone else face similar problems?

wK (www.doubleukay.com)

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