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Subject2.6.0-test3 smp irq balance
Date
Hi!

having switched to 2.6.0-t3 to test some of the new features, I
noticed more framedrops from bttv. sometimes the system feels a little
sluggish, although i expected the opposite.

trying to track down the "problem" I stumbled across this:

jens@maniac:/usr/src/linux$ cat /proc/interrupts
CPU0 CPU1
0: 91133739 29 IO-APIC-edge timer
1: 43765 1 IO-APIC-edge i8042
2: 0 0 XT-PIC cascade
4: 774189 0 IO-APIC-edge serial
5: 9337660 1 IO-APIC-level ohci1394, uhci-hcd, uhci-hcd
8: 4 0 IO-APIC-edge rtc
9: 15340458 1 IO-APIC-level Ensoniq AudioPCI, eth1
10: 1233326 5 IO-APIC-level ide3, eth0
11: 21436308 1 IO-APIC-level nvidia, bttv0
14: 884901 0 IO-APIC-edge ide0
15: 126 2 IO-APIC-edge ide1
NMI: 0 0
LOC: 91137709 91138393
ERR: 0
MIS: 12

irqs seem not to be distributed between cpus, having one to handle all
(even while building kernel on both cpus (according to gkrell), the
numbers for the second cpu don't change.

i could post any needed information (hopefully). The bootup process
did not show anything raising questions to me.

any hints?

--
Tschoe, http://gecius.de/gpg-key.txt - Fingerprint:
Jens 1AAB 67A2 1068 77CA 6B0A 41A4 18D4 A89B 28D0 F097

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