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[Xen-users] disk performance about half in domU? + question about XenSou

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] disk performance about half in domU? + question about XenSource
From: Johnn Tan <linuxweb@xxxxxxxxx>
Date: Mon, 13 Aug 2007 17:16:30 -0400
Delivery-date: Mon, 13 Aug 2007 14:17:00 -0700
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Based on some tests we ran, it seems the biggest performance hit you get from running within domU is from disk I/O. We did some mysql read and write tests, and for both, our performance is about half that compared to native. Has that been others' experience?

Is there any way to make this better? We are using physical partitions. In contrast, cpu/memory tests appear to be near native.


Does buying commercial Xen (XenSource) help in anyway? Do they have optimized disk drivers?

johnn

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