RE: [Xen-devel] File System Performance - 10x slower

Ian Pratt
2005-01-11T19:11:53Z

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