Re: [Xen-users] Severe dom0 performance issues after installing Xen

[Keith Buck <buck.alex@xxxxxxxxx>]

On Mon, Sep 3, 2012 at 7:00 PM, Raj Mathur (ààà ààààà) <raju@xxxxxxxxxxxxxxx> wrote:

On Tuesday 04 Sep 2012, Keith Buck wrote:
> I'm experiencing some severe performance issues running Xen 4.0.1
> with a cleanly-installed Debian 6 dom0. ÂPrior to installation, the
> machine's performance was fine, but after installation booting takes
> anywhere from 5 to 20 times longer, processes take a long time to
> start, and SSH lags. ÂNo domUs are running (or have been created
> yet). ÂI can switch back to running without Xen (but still using the
> Xen-compatible kernel) and the performance problems disappear.

Probably a stupid question, but sometime we miss the obvious: did you
make any networking changes? ÂSpecifically, could this problem be due to
not being able to reverse resolve IP addresses on your machine?

I haven't made any networking changes. The SSH latency isn't just logging in, there's also latency echoing back what I type at the prompt and displaying the output of programs.

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