Shaun, Thanks, don`t think I don't appreciate all your time, I really do. So you`re saying it's possibly just fake smoke from a non-existent fire, and that nothing is actually wrong despite a high load one one of the CPUs?
That`s what it really is: I am seeing smoke and am looking for a fire, maybe I'm just being paranoid. That`s what trending and SNMP alarms are for I suppose ;-) Mike > -----Original Message----- > From: asterisk-users-boun...@lists.digium.com [mailto:asterisk-users- > boun...@lists.digium.com] On Behalf Of Shaun Ruffell > Sent: Tuesday, September 28, 2010 14:57 > To: asterisk-users@lists.digium.com > Subject: Re: [asterisk-users] Asterisk 1.62.13 - CPU spikes every 10 > minutes - NOT FIXED > > On 09/28/2010 12:53 PM, Mike wrote: > > Thanks for all the help. I tried but couldn't see a definite spike > anyways. > > I used mpstat to see the irq% for each CPU, and although it shows me > spikes > > to 100% for one CPU (not always the same one is spiking irq%) the intr/s > > isn't actually spiking. > > > > It`s like suddently there aren't more interrupts, but the IRQ% time for > the > > CPU shoots up. > > > > What can make it do that? > > Now we're back to my original assertion that I believe what you're > seeing is related to the way % cpu time is calculated statistically via > a timer interrupt. I would bet that you have a steady amount of cycles > dedicated to servicing the interrupt handler but every 10 minutes there > are a confluence of factors that affect the calculation. > > You might be able to use a tool like cyclictest [1] to see if there > really is some inordinate amount of scheduling latency every 10 minutes > as opposed to some sampling anomaly. > > [1] https://rt.wiki.kernel.org/index.php/Cyclictest > > -- > Shaun Ruffell > Digium, Inc. | Linux Kernel Developer > 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA > Check us out at: www.digium.com & www.asterisk.org > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users