[Asterisk-Users] wcfxs causing constant CPU spikes

[Eric Bishop]

Jim,

As I mentioned in my email, I have already tried a fresh kernel an get
the same result. I would love to test out whatever solution you may
have......

Thanks...


On Wed, 15 Dec 2004 19:25:46 -0500, Jim Van Meggelen <jim at vanmeggelen.ca> wrote:
> First of all, from what I've read, you need to get rid of the stock
> Fedora kernel -- RedHat's kernels seem to get a lot of negative
> attention these days. Download a fresh one from www.kernel.org, and
> re-complile. Here's some decent instructions:
> http://www.digitalhermit.com/linux/Kernel-Build-HOWTO.html#INTRO
> 
> There's more to this than that, but my advice would be to not even
> bother until you've built a fresh kernel over the RedHat one. (check out
> the list archives -- you're not the only one with this problem).
> 
> I'm right in the middle of something that may have a huge impact on all
> the IRQ latency issues everyone's been having. Let me know if you're
> interested in using your system as a guinea pig.
> 
> Cheers,
> 
> Jim.
> 
> 
> > -----Original Message-----
> > From: asterisk-users-bounces at lists.digium.com
> > [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of
> > Eric Bishop
> > Sent: December 15, 2004 5:37 PM
> > To: asterisk-users at lists.digium.com
> > Subject: [Asterisk-Users] wcfxs causing constant CPU spikes
> >
> >
> > Hi All,
> >
> > I have a problem (at least I think it's a problem) where the
> > wcfxs module causes constant CPU usage spikes. The card being
> > used is a Digium Wildcard TDM400P with 3 FXO modules and 1
> > FXS (TDM31B).
> >
> > Monitoring my otherwise idle asterisk box (with top) I see
> > once every 3-5 seconds hi (hardware interrupt) spike to
> > 30%-40% and then drop back to 0 again. This is the case wtih
> > both asterisk stable and CVS HEAD. I am running Fedora Core 2
> > (also tried with Fedora Core 3). I have also tried installing
> > a vanilla kernel as suggested previously on the list, all
> > with the same result. Unloading the wcfxs module fixes the problem.
> >
> > Is this normal for the wcfxs module or am I being paranoid? 
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