On Nov 29, 2011, at 18:13, Hubert Krause <[email protected]> 
(by way of HubertKrause <[email protected]>) (by way of 
HubertKrause <[email protected]>) wrote:

> Hello,
> 
> my environment is a Debian squeeze host with a few debian squeeze
> guests. The private and root filesystems of the guest are locatet on
> the same raid device (raid5) 

maybe offtopic, maybe not, but stop using raid5 for VM deployment, use raid10, 
raid1, raid0 -- with lvm and snapshots

raid5 will always be slow on io, as it has checksums because "recalculation and 
redistribution of parity data on a per-write basis"
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