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[Xen-devel] Performance on QEMU IDE disks
| To: | <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Performance on QEMU IDE disks |
| From: | "P M, Priya (STSD)" <pm.priya@xxxxxx> |
| Date: | Fri, 14 Jul 2006 21:54:30 +0530 |
| Delivery-date: | Fri, 14 Jul 2006 09:25:14 -0700 |
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| Thread-index: | AcanYfwLSpUkk7UaTBWgrGr/iM71rw== |
| Thread-topic: | Performance on QEMU IDE disks |
|
Hi,
We have Intel VT
enabled system loaded with Xen 3.0.2 and qemu based FC5+linux 2.6.16 as a
guest operating system.
We did some
performance tests on this guest OS and the results are
Sequential Write - IOPs
We have
disabled the Write Cache using sdparm and hdparm utilities. But if you see the
results in Linux Full Virtualization, the Sequential Write IOPs are better than
Native performance. I am wondering how is this possible? Is there anywhere the
caching is happening in the full virtualization case? If you have an idea about
this behavior, please let me
know.
Thanks
Priya _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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