Messages in this thread | | | Date | Wed, 17 Apr 2002 20:58:13 +0200 (CEST) | From | Steffen Persvold <> | Subject | Re: SMP P4 APIC/interrupt balancing |
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On Wed, 17 Apr 2002, Ingo Molnar wrote:
> > On Wed, 17 Apr 2002, James Bourne wrote: > > > After Ingo forwarded me his original patch (I found his patch via a web > > based medium, which had converted all of the left shifts to compares, > > and now I'm very glad it didn't boot...) and the system is booted and is > > balancing most of the interrupts at least. Here's the current output of > > /proc/interrupts > > > > brynhild:bash$ cat /proc/interrupts > > CPU0 CPU1 > > 0: 171414 0 IO-APIC-edge timer > > 1: 3 2 IO-APIC-edge keyboard > > 2: 0 0 XT-PIC cascade > > 8: 1 0 IO-APIC-edge rtc > > 18: 8 7 IO-APIC-level aic7xxx > > 19: 13566 12799 IO-APIC-level eth0 > > 20: 9 7 IO-APIC-level aic7xxx > > 21: 9 7 IO-APIC-level aic7xxx > > 27: 1572 5371 IO-APIC-level megaraid > > NMI: 0 0 > > LOC: 171315 171251 > > ERR: 0 > > MIS: 0 > > it's looking good. > > > So, the timer isn't being balanced still, others are (is there a > > specific case in your patch for irq 0 (< 1)? I couldn't see it but it > > almost looks as though it's being missed..) > > it's a separate bug, solved by a separate patch. >
Hi again,
Hmm, is that something ServerWorks specific because on my Plumas chipset the timer interrupt is balanced just fine :
(sp@puma2:~)> cat /proc/interrupts CPU0 CPU1 0: 14358402 14297319 IO-APIC-edge timer 1: 2 1 IO-APIC-edge keyboard 2: 0 0 XT-PIC cascade 4: 336 325 IO-APIC-edge serial 8: 1 0 IO-APIC-edge rtc 9: 0 0 IO-APIC-edge acpi 15: 3 1 IO-APIC-edge ide1 16: 0 0 IO-APIC-level usb-uhci 17: 576744 574959 IO-APIC-level eth0 18: 0 0 IO-APIC-level usb-uhci 19: 0 0 IO-APIC-level usb-uhci 28: 72602 71619 IO-APIC-level aic7xxx 29: 8 8 IO-APIC-level aic7xxx 31: 0 0 IO-APIC-level e1000 48: 289545 269389 IO-APIC-level ssci NMI: 0 0 LOC: 28654183 28654202 PMC: 0 0 ERR: 0 MIS: 0
Regards, -- Steffen Persvold | Scalable Linux Systems | Try out the world's best mailto:sp@scali.com | http://www.scali.com | performing MPI implementation: Tel: (+47) 2262 8950 | Olaf Helsets vei 6 | - ScaMPI 1.13.8 - Fax: (+47) 2262 8951 | N0621 Oslo, NORWAY | >320MBytes/s and <4uS latency
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