[Asterisk-Users] X100P interrupt load

[Kristian Kielhofner]

Jesse Guardiani wrote:
> Hello,
> 
> Can anyone tell me what the "normal" number of
> interrupts per second is for an X100P card?

	1000 / card

> I've used FreeBSD 5.3 and a linux 2.6.11 kernel
> on the exact same hardware (only the disk changed)
> and `systat -vmstat 1` on FreeBSD and
> `procinfo -dS -n1` under Linux. For both, I'm
> seeing roughly 1000 interrupts per second on my
> X100p card. It was a bit worse under FreeBSD,
> and I experienced frequent lockups, hangs, and
> X100p malfunctions, so I switched to Linux. The
> machine is usable under Linux, but I still think
> that number of interrupts per second is a bit
> high.

	FreeBSD had some issues with Asterisk.  You use to have to tell * to 
not load a specific module or something.  Can't remember exactly.  Look 
on the wiki under Asterisk FreeBSD or BSD.

	Also, on 2.6.11 look at the "timer" in /proc/interrupts.  It's 
1000/second too.

> My motherboard is an Abit BE6, and it seems to
> have some IRQ assignment problems, so I'm
> wondering what my baseline should be.
> 
> Also, I have a dual CPU PII motherboard with two
> X100P cards in it, and it's hitting about 1000
> interrupts per second per card too. Is this normal?
> How many interrupts per second can a given CPU
> sustain?

	If you want to reduce interrupt load, go down to one card.  If you have 
4 X100P's, that 4000 interrupts/sec.  If you have 1 TDM400, that's 1000/sec.

--
Kristian Kielhofner