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Thread: xen guest io performance
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- Join Date
- Mar 2009
xen guest io performance
at the moment I have a big problem with thel 5.3 and xen guest io performance.
It is quit slow and hangs during operations. If I create a img file on the dom0 I get this result:
104857600 Bytes (105 MB) copied, 0,231527 sec, 453 MB/s
If I run the same command in the domU I got this:
104857600 Bytes (105 MB) copied, 14,725 sec, 7,1 MB/s
it doesn't need 14 sec, in the realtime it needs about 1 min
If the domU ist fresh restartet I get this:
104857600 Bytes (105 MB) copied, 0,321997 sec, 326 MB/s
I use a normal disk image in dom0 for the domU, I have no more idea what it could be. The guest is paravirtual installed rhel. During the installation I have the same problem during create the filesystem. It starts and goes directly to 98% and then it need 20min to finished it.
I'm glad for every information.