Kristian Kielhofner wrote: > 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.
This should be "has some issues". I do not consider the FreeBSD zaptel support to be production quality in any way. I experienced reproducible system hangs (mostly after an asterisk restart), interrupt issues (audio skips and SSH pauses during typing), and general instability. This was with an up-to-date FreeBSD 5.3-SECURITY and the latest zaptel at asterisk from ports (1.0.6 for asterisk, and a significantly lower version for zaptel, I think). I do not recommend anyone run FreeBSD + Asterisk at this time. [...] > Also, on 2.6.11 look at the "timer" in /proc/interrupts. It's > 1000/second too. Yeah, I saw that. How is that significant? I'm a software guy, not a hardware guy, so I don't know much about interrupts. Just that 1000 interrupts/sec is fairly high. :) >> 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. Again, is there a formula to describe how many interrupts per second a given CPU, PCI bus, and FSB bus can theoretically sustain per second? I'm curious if my 450mhz PIII should be able to handle 2 x100p cards, or just 1? What's the limit? Etc.... -- Jesse Guardiani, Systems Administrator WingNET Internet Services, P.O. Box 2605 // Cleveland, TN 37320-2605 423-559-LINK (v) 423-559-5145 (f) http://www.wingnet.net _______________________________________________ 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
