Hi Mike, <br><br>I`m not sure, but I suggest the following tests.<br>The cards generate interrupts even with no load. And in real life they have different clocks. A very small clock difference could accumulate and make the interrupts happen at same time. USB , TCE400 or PRI card interrupt routines could be having problems at this moment.<br>
<br>1) Separe usb interrupts from digium boards, try to do it by changing board slots. (or disabling usb in BIOS).<br><br>2) Try to run your system using one digium board at once to determine which one is generating the problem or if the problem occurs only with both present.<br>
<br> <br>Luis A P Barbosa<br><br><div class="gmail_quote">2010/9/28 Mike <span dir="ltr"><<a href="mailto:list@net-wall.com">list@net-wall.com</a>></span><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
(sorry for the series of email, I realize I seem to be having a discussion<br>
with myself).<br>
<br>
I was wrong, the "problem" isn't fixed. Is having IRQ spikes every 10<br>
minutes (under no load at all) the norm with Dahdi hardware?<br>
<br>
Mike<br>
<br>
<br>
<br>
> -----Original Message-----<br>
> From: Mike [mailto:<a href="mailto:list@net-wall.com">list@net-wall.com</a>]<br>
> Sent: Tuesday, September 28, 2010 3:34<br>
> To: 'Asterisk Users Mailing List - Non-Commercial Discussion'<br>
> Subject: RE: [asterisk-users] Asterisk 1.62.13 - CPU spikes every 10<br>
> minutes - FIXED...?<br>
><br>
> ...which, after upgrading to Dahdi 2.4.0 seem to be gone. Not sure if<br>
> 2.3.0.1 was the culprit, or just the fact that sonething was stuck<br>
> (stopping dahdi took about 5 attempts because it was apparently in use,<br>
> even if Asterisk had been shutdown).<br>
><br>
> Hopefully this isn't just the calm before the storm and Dahdi will behave<br>
> under load.<br>
><br>
> Thanks for the help Shaun, I appreciate you helping point me in the right<br>
> direction. Hopefully this will help someone.<br>
><br>
> Mike<br>
><br>
> > -----Original Message-----<br>
> > From: Mike [mailto:<a href="mailto:list@net-wall.com">list@net-wall.com</a>]<br>
> > Sent: Tuesday, September 28, 2010 2:55<br>
> > To: 'Shaun Ruffell'<br>
> > Subject: RE: [asterisk-users] Asterisk 1.62.13 - CPU spikes every 10<br>
> > minutes<br>
> ><br>
> > Actually, after further investigation I found that every 10 minutes I<br>
get<br>
> > massive irq usage spikes. The CPU is busy servicing hardware<br>
interrupts.<br>
> ><br>
> > I do have a 4 port PRI card and a TCE400B card, but tha happens even<br>
> when<br>
> > asterisk activity=0.<br>
> ><br>
> > Mike<br>
> ><br>
> > > -----Original Message-----<br>
> > > From: Shaun Ruffell [mailto:<a href="mailto:sruffell@digium.com">sruffell@digium.com</a>]<br>
> > > Sent: Monday, September 27, 2010 15:58<br>
> > > To: Mike<br>
> > > Subject: Re: [asterisk-users] Asterisk 1.62.13 - CPU spikes every 10<br>
> > > minutes<br>
> > ><br>
> > > When the asterisk process spikes, do you know if there is a<br>
> > > corresponding spike in us, sy, ni, hi, or si time?<br>
> > ><br>
> > > On 09/27/2010 02:53 PM, Mike wrote:<br>
> > > > That`s exactly what I did, and exactly what didn't happen.<br>
> > > ><br>
> > > > Mike<br>
> > > ><br>
> > > >> -----Original Message-----<br>
> > > >> From: Shaun Ruffell [mailto:<a href="mailto:sruffell@digium.com">sruffell@digium.com</a>]<br>
> > > >> Sent: Monday, September 27, 2010 15:48<br>
> > > >> To: Mike<br>
> > > >> Subject: Re: [asterisk-users] Asterisk 1.62.13 - CPU spikes every<br>
10<br>
> > > >> minutes<br>
> > > >><br>
> > > >> Just something like "echo 1200 ><br>
> > > >> /proc/sys/net/ipv4/route/secret_interval" should have been<br>
> sufficient<br>
> > to<br>
> > > >> half the frequency of the CPU spikes.<br>
> > > >><br>
> > > >><br>
> > > >> On 09/27/2010 02:42 PM, Mike wrote:<br>
> > > >>> I just changed the file, did I need to reboot or do anything for<br>
> the<br>
> > > >> change<br>
> > > >>> to take effect?<br>
> > > >>><br>
> > > >>> Mike<br>
> > > >>><br>
> > > >>>> -----Original Message-----<br>
> > > >>>> From: Shaun Ruffell [mailto:<a href="mailto:sruffell@digium.com">sruffell@digium.com</a>]<br>
> > > >>>> Sent: Monday, September 27, 2010 15:34<br>
> > > >>>> To: Mike<br>
> > > >>>> Subject: Re: [asterisk-users] Asterisk 1.62.13 - CPU spikes every<br>
> 10<br>
> > > >>>> minutes<br>
> > > >>>><br>
> > > >>>> Hmm..ok, then I'm not sure I'll be able to help. It's just that<br>
I<br>
> > > know<br>
> > > >>>> I've seen issues similar to what you're reporting based on the<br>
> route<br>
> > > >>>> table flushing pushing some si time into the asterisk process<br>
(and<br>
> > it<br>
> > > >>>> runs at 10 minute intervals by default).<br>
> > > >>>><br>
> > > >>>> So I'm not as familiar with the Asterisk code base to know what<br>
> sort<br>
> > > of<br>
> > > >>>> periodic tasks may have changed between the versions you<br>
reported.<br>
> > > >>>><br>
> > > >>>> On 09/27/2010 02:23 PM, Mike wrote:<br>
> > > >>>>> That wasn't it. I wonder what happens precisely every 10<br>
minutes<br>
> > in<br>
> > > >>>>> Asterisk (or that is accounted to Asterisk's CPU usage).<br>
> > > >>>>><br>
> > > >>>><br>
> > > >>>><br>
> > > >>>> --<br>
> > > >>>> Shaun Ruffell<br>
> > > >>>> Digium, Inc. | Linux Kernel Developer<br>
> > > >>>> 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA<br>
> > > >>>> Check us out at: <a href="http://www.digium.com" target="_blank">www.digium.com</a> & <a href="http://www.asterisk.org" target="_blank">www.asterisk.org</a><br>
> > > >>><br>
> > > >><br>
> > > >><br>
> > > >><br>
> > > >> --<br>
> > > >> Shaun Ruffell<br>
> > > >> Digium, Inc. | Linux Kernel Developer<br>
> > > >> 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA<br>
> > > >> Check us out at: <a href="http://www.digium.com" target="_blank">www.digium.com</a> & <a href="http://www.asterisk.org" target="_blank">www.asterisk.org</a><br>
> > > ><br>
> > ><br>
> > ><br>
> > > --<br>
> > > Shaun Ruffell<br>
> > > Digium, Inc. | Linux Kernel Developer<br>
> > > 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA<br>
> > > Check us out at: <a href="http://www.digium.com" target="_blank">www.digium.com</a> & <a href="http://www.asterisk.org" target="_blank">www.asterisk.org</a><br>
<br>
<br>
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</blockquote></div><br>