Re: High IRQ load in NetBSD DomainU

[Markus Kovero <markus.kovero%multiwise.fi@localhost>]

Manuel Bouyer kirjoitti:
> On Wed, Jun 14, 2006 at 01:01:18PM +0300, Markus Kovero wrote:
>   
> > Hi there, I've encoutered intresting problem. I'm running linux Domain0 
> > and two NetBSD DomainU's. After upgrading to Xen3 there is constant high 
> > IRQ load on both NetBSD domainU's which did not happen before. It causes 
> > major slowdown on DomainU's
> >
> > http://staff.fiveam.org/mrtg/irq.html there you can see mrtg graph how 
> > it peaked to over 8000 IRQ requests per second after upgrading to Xen3.
> > Loads are considerably high but CPU idle is 100%.
> > What might be causing this problem?
> >     
>
> Could you try a current kernel ? I havn't had time to look at this but
> someone else reported here that current kernels don't have this issue.
> It's just as a data point, I'll try to get netbsd-3 fixed in not too long.
>
>   


Okay, I tried current kernel and now network doesnt work.
doing just ifconfig -a gives this:

ifconfig: socket: No buffer space available

on:
NetBSD foo 3.99.21 NetBSD 3.99.21 (XEN3_U) #0: Fri Jun  9 01:12:44 UTC 
2006  
builds%b3.netbsd.org@localhost:/home/builds/ab/HEAD/i386/200606080000Z-obj/home/builds/ab/HEAD/src/sys/arch/i386/compile/XEN3_U 
i386

sigh. :-P
Anyway, theres no high loads anymore but network connectivity would be cool.

Yours
Markus Kovero