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[Xen-users] Re: xen 2.0.7 on SuSE 9.3 very slow responses in dom0

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Re: xen 2.0.7 on SuSE 9.3 very slow responses in dom0
From: Dirk Estreng <dirk.estreng@xxxxxx>
Date: Tue, 3 Jan 2006 14:56:35 +0000 (UTC)
Delivery-date: 2006年1月03日 15:02:41 +0000
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Tracked it down a little more:
running: "bonnie++ -s 2048 -d /var/tmp -u root" in dom0 
watching: "iostat -x -d 2" gives:
await svctm %util
6953.33 111.11 100.00
9039.17 166.67 100.00
(...)
man iostat says: "%util: Percentage of CPU time during which I/O requests 
were issued to the device (bandwidth utilization for the device). Device 
saturation occurs when this value is close to 100%.
Running: "mpstat 3 5" while bonnie++ runs shows:
15:51:33 CPU %user %nice %system %iowait 
15:51:36 all 0.00 0.00 0.00 99.67
15:51:39 all 0.00 0.00 0.00 100.00
15:51:42 all 20.33 0.00 14.00 65.67 
15:51:45 all 0.00 0.00 0.00 100.00
15:51:48 all 0.00 0.00 0.00 100.00
man mpstat says: "%iowait: Show the percentage of time that the CPU or CPUs 
were idle during which the system had an outstanding disk I/O request."
So as far as i understand my ATA drive locks up my CPU...
Where is the problem??
I am running:
xen2.0.7 on suse 9.3 with 2.6.11.4-21.8-xen
Thanks Dirk
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