Re: High interrupt when using 'dd' with Xen DOM0 kernel

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Sat, May 02, 2009 at 03:47:16AM +0200, Jean-Edouard Babin wrote:
> Hello,
> 
> I upgraded from a quite old (november) NetBSD 4.99 i386 to NetBSD 5
> amd64. (with latest XEN33 packages)

were you using xen33 or xen31 before ?

> 
> I tried dd if=/dev/zero of=DomU.img bs=1m count=10240 to make a new
> image to create a domU
> but this make interrupt to go to 97%
> CPU states:  1.0% user,  0.0% nice,  0.0% system, 97.1% interrupt,  2.0% idle
> 0 root    126    0    0K  12M pgdaemon  5:36 76.07% 76.07% [system]

please try
systat vm
to see which interrupt rate is high ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--