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RE: [Xen-devel] RE: freezing when using GPLPV drivers (including Dom0)

To: "Tian, Kevin" <kevin.tian@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] RE: freezing when using GPLPV drivers (including Dom0)
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Wed, 31 Dec 2008 14:37:12 +1100
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Thread-topic: [Xen-devel] RE: freezing when using GPLPV drivers (including Dom0)
>
> >Is there a way under Linux of monitoring disk queue length? I am
using
> >LVM on top of a low end HP 'Smart Array' (E200) running two RAID1
> >volumes using SATA disks.
> >
> 
> 'sar' could provide such info, IMO.
> 

iostat shows very very low disk usage when things are frozen. I am
finding that I can type 'sync' and things will unfreeze again...
unfreezing before the sync completes. I haven't done this enough times
to know if things would have unfrozen on their own though.

James

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