Re: [Xen-users] Xen is 37x slower in processing a loop

[Fabian Zimmermann <xenusers@xxxxxxxxxxxxxxxxx>]

Hello,

2011/12/31 Mark van Dijk <mark@xxxxxxxxxxxxxx>:
> Alright, you tested dom0. Are any domU's online during that test?

Yes, I tested Dom0 and DomUs, both are affacted.

To answer your question:

The loop is slow even if there is no DomU running, but I didn't test
if events/0 is using too much CPU if there are no DomUs running. So:

- slow loop in Dom0/DomU regardless of DomUs are running or not.
- high events/0 cpuload if DomU is running (didn't test without running DomU).

Some - maybe usefull - informaton: I also detected a very slow
vmlinuz-loading/initrd-processing while booting Dom0.

Thanks a lot,

Fabian Zimmermann

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