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xen-devel
RE: [Xen-devel] File System Performance - 10x slower
Check that the domain 0 kernel you are using has the appropriate drivers
for your hardware. It's probably using PIO or something daft.
> I ask since it should be almost *impossible* to get anything more
> than a very small % slowdown on disk I/O unless things are very
> broken -- most of our benchmarks to date show 0% slowdown (and
> in some cases involving domU, a speedup due to additional buffering).
Ian
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