Hey Guys,
when starting a DomU we use iscsi as disks for our vms. When testing throughput
I get half the troughput in contrast to tests on the Dom0 itself.
For Example:
I log in the target on the xenhost (Dom0) itself and get a troughput of 80mb/s.
that''s ok
Now im starting the VM (DomU) and the same target is now attached as xvdb. When
doing troughput tests the speed is about 40mb/s.
The DomU is paravirtualized linux. Im using xen 4.0.1 on debian squeeze.
Is that an issue to the xen blkfront driver? Is that a normal performance drop?
Are there any tweaks?
Thanks for explanation and help!
Regards
Thomas
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