> -----Original Message----- > From: Adam Goryachev [mailto:[EMAIL PROTECTED] > Sent: Thursday, May 05, 2005 10:53 PM > To: Asterisk Users Mailing List - Non-Commercial Discussion > Subject: Re: [Asterisk-Users] Re: Problems with TDM400P card > > > On Thu, 2005-05-05 at 12:11 -0400, Andrew Kohlsmith wrote: > > On May 5, 2005 11:13 am, Mike Mueller wrote: > > > > Couple this with the fact that the driver now seems to pull 100% CPU > > > > every 5 seconds or so and it didn't before and I think we have a good > > > > case for there being something weird in the driver that is causing frame > > > > slips or other weirdness that is generally not audible for most people > > > > but wreaks havoc even for G3 or ECM (I think that's the term for > > > > error-correcting fax) fax machines. > > > > > > As measured with top? > > > > No; vmstat 1, without anything (not even asterisk) running. > > > > Driver unloaded: no spiking. Driver loaded: spiking. > > Of the three machines running asterisk just now, none of them display > this 'spike' as described. This was while asterisk was running etc as > well. > {clip}
I also observe this spiking behavior with a t100p and cvs-head. I'm running kernel 2.6.11.8 with the realtime patches applied and see the cpu time going to the kthread servicing the interrupt that t100p is on (IRQ 9 in my case), with or without asterisk itself running. This occurs even after raising the priority of the IRQ 9 kthread to the highest priority process. However, this on its own doesn't noticeably affect the audio - small timing defects on the T1 can usually be noticed by dialing into a milliwatt() target on the problem box across that link. That said, perhaps the jitter is too slight to hear on a 1004hz sign wave and needs a T1 analyzer to detect properly. Kris Boutilier Information Systems Coordinator Sunshine Coast Regional District _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
