New tutorial for interrupt problems with zaptel hardware, was: Re: [Asterisk-Users] Asterisk's MultiProcessor Ability

[Zoa]

About those IRQ request issues, i wrote something about that today.

http://www.asteriskguru.com/tutorials/pci_irq_apic_tdm_ticks_te410p_te405p_noise.html

Some part in there also mentions assigning an irq to a different cpu.
This should help with people with interrupt issues (or multiple zaptel
cards in one machine).

If it helps for someone, let me know, if it doesnt, let me know too.

Zoa.

Wiley Siler wrote:

>Good questions I have always wondered about since I have a DP box for my
>* server.
>
>Isn't that only true in the event that no transcoding is happening?
>Won't processor usage increase pretty drastically if transcoding occurs
>a lot?
>How about if the users have music on hold a lot or use a lot of MeetMe
>rooms?  Will that increase that processor use as well?
>
>Also. Does the presence of a second processor help with IRQ request
>issues?  (sorry if that question is really dumb)
>
>Thanks,
>Wiley
>
>
>-----Original Message-----
>From: asterisk-users-bounces at lists.digium.com
>[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of William
>Boehlke
>Sent: Wednesday, May 25, 2005 10:33 AM
>To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
>Subject: RE: [Asterisk-Users] Asterisk's MultiProcessor Ability
>
>Telephony doesn't use a lot of processor. We think one of the principal
>arguments for a second one is that you have another processor in the
>unlikely event that your primary fails.
>
>William Boehlke
>Signate
>
>
>-----Original Message-----
>From: asterisk-users-bounces at lists.digium.com
>[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Matthew
>Boehm
>Sent: Wednesday, May 25, 2005 9:40 AM
>To: asterisk-users at lists.digium.com
>Subject: [Asterisk-Users] Asterisk's MultiProcessor Ability
>
>We have asterisk running on a quad processor dell. The kernel has been
>compiled with SMP.
>
>However, asterisk seems to only use 1 processor. 3 of the 4 always stay
>at 100% idle.
>
>Is it pointless to have a multi-proc machine? I was going to buy a new
>dual 3.6Ghz Xeon server but if nothing will take advantage of the other
>proc...
>
>Perhaps my conception of multi-proc/threaded is warped. If asterisk is
>the only thing using CPU, I would expect the load to be dristributed
>amounst the processors. Instead of 1 proc falling to 20% idle (80% using
>on that 1 proc), I should see all 4 procs fall to 80% idle (20% used on
>each). Is this wrong?
>
>What about the g729 library from digium? Is that multi-proc aware?
>
>-Matthew
>
>--
>------------------------------------------------------------------------
>Matthew Boehm, IT Director                    Cypress Telecommunications
>mboehm at cytelcom.com                   3838 N. Sam Houston Parkway E #400
>T: 832-200-8640 x3044                                  Houston, TX 77032
>
>My girlfriend was recently diagnosed with multiple personality disorder;
>When she called yesterday, my CallerID box exploded.
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