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xen-devel
Re: [Xen-devel] Report on Virtualization in Clusters
The application benchmarking behaved similar on the two clusters (with
different HW), which makes
it more probably it is the overhead. As mentioned we didn't disable IC
on the tg3 drive so we don't
really know.
- Rune
On Nov 26, 2004, at 11:44 AM, Jacob Gorm Hansen wrote:
Håvard Bjerke wrote:
Rune and I just finished writing a report on using virtualization
with Xen in clusters, with focus on network performance. You may
download it from http://www.idi.ntnu.no/~havarbj/clust_virt.pdf
We hope you find it interesting!
Yes, very interesting. Good work.
It seems from your tests without interrupt coalescing that Xen has a
higher interrupt-handling overhead than native Linux. I suppose that
with the new IO model, Xen needs to flush the TLBs for every interrupt
that arrives. Do you think this is the reason for the overhead, or are
the performance problems only due to your hardware being badly
supported by Xen?
Jacob
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