Messages in this thread | | | Date | Tue, 23 Dec 2003 13:48:47 +0100 | From | Andreas Haumer <> | Subject | 2.4.23, 2.4.24-pre: Interrupt balancing problem |
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Hi!
Interrupt balancing doesn't work anymore on an Asus Dual Xeon Server (AP1700-S5, ASUS PR-DLS533 MB, Dual Xeon HT).
Last kernel where this worked was 2.4.21-ac:
cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 0: 32414607 32353905 32486435 32470963 IO-APIC-edge timer 1: 1 0 0 1 IO-APIC-edge keyboard 2: 0 0 0 0 XT-PIC cascade 15: 1 0 0 1 IO-APIC-edge ide1 18: 22702419 22631022 22668864 22843971 IO-APIC-level eth0 22: 15021656 15223388 15112963 14929184 IO-APIC-level ioc0 23: 9 7 15 11 IO-APIC-level ioc1 NMI: 0 0 0 0 LOC: 129727116 129727115 129727114 129727114 ERR: 0 MIS: 0
Note that on this particular hardware, I have to boot with "acpi=off" or "pci=noacpi" in order to get the Fusion MPT hardware recognized (see my other bug report a few minutes ago)
I didn't check 2.4.22, but with 2.4.23 and 2.4.24-pre2 I get something like the following:
Booted with "acpi=off": root@tolstoi:~ {502} $ cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 0: 41424 0 0 0 IO-APIC-edge timer 1: 2 0 0 0 IO-APIC-edge keyboard 2: 0 0 0 0 XT-PIC cascade 11: 0 0 0 0 IO-APIC-level usb-ohci 18: 8235 0 0 0 IO-APIC-level eth0 22: 34704 0 0 0 IO-APIC-level ioc0 23: 42 0 0 0 IO-APIC-level ioc1 NMI: 0 0 0 0 LOC: 41271 41270 41270 41269 ERR: 0 MIS: 0
Booted with "pci=noacpi": root@tolstoi:~ {502} $ cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 0: 89806 0 0 0 IO-APIC-edge timer 1: 2 0 0 0 IO-APIC-edge keyboard 2: 0 0 0 0 XT-PIC cascade 9: 0 0 0 0 XT-PIC acpi 11: 0 0 0 0 IO-APIC-level usb-ohci 18: 12481 0 0 0 IO-APIC-level eth0 22: 12518 0 0 0 IO-APIC-level ioc0 23: 42 0 0 0 IO-APIC-level ioc1 NMI: 0 0 0 0 LOC: 89651 89650 89650 89650 ERR: 0 MIS: 0
I also tried boot options "noirqbalance" and "acpi_irq_balance", but interrupts were still served on CPU0 only (SMP is working, though: I can build the kernel with "make -j4" and as "top" tells all four logical CPU's are used perfectly well)
Bug or feature?
- - andreas
- -- Andreas Haumer | mailto:andreas@xss.co.at *x Software + Systeme | http://www.xss.co.at/ Karmarschgasse 51/2/20 | Tel: +43-1-6060114-0 A-1100 Vienna, Austria | Fax: +43-1-6060114-71 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
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