Re: Hard locks under high interrupt load?

[Dan Creswell]

This box is running Fedora Core 1 and so, yes, it's running a userspace 
balance daemon (Redhat's).

I'll try out the noirqbalance option and get back to the list on that one.

Zwane Mwaikambo wrote:

> On Fri, 27 Feb 2004, Dan Creswell wrote:
>
>  
>
> > I'm having zero success in getting 2.6.3 stable under interrupt load.  I
> > can kill my machine in a variety of fashions all of which appear, to my
> > naive eye, related to interrupt load:
> >
> > (1)   LAN traffic via E1000 card (X is not running)
> > (2)   Running X for more than a few minutes - starting up a couple of
> > applications whilst performing some disk-based activity (such as a
> > compile) usually seems to do the trick.
> >
> > (2) is worth a little more examination.  I have an NVIDIA card (I can
> > hear you all groan) *but* I get the same results with the XFree driver
> > *or* the proprietary NVIDIA driver.
> >
> > Disabling IO-APIC usage seems to resolve the problem.
> >    
>
> Does the 'noirqbalance' kernel parameter also serve as a workaround? Are
> you using any userspace irq balancers?
>
>  
>
> > Machine is a dual Xeon, Tyan S2665 (E7505 chipset) with an MPT-Fusion
> > SCSI controller.
> >
> > 2.4.26-pre1 and various other 2.4 kernels give me no problems at all.  I
> > really want to switch my machines over to 2.6 but I can't whilst this
> > problem persists.
> >    
>
>  

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