Arjan van de Ven wrote: >> It'd be nice if we could just teach the userspace balancer to not try to >> move perpcu IRQs? >> >> otoh, the patch is super-cheap. Arjan? > > I can fix irqbalance no problem, however I like the kernel approach as > well, since it's not just irqbalance that moves irqs, sysadmins tend to > do it as well.... so how about both? Thanks for positive comments. > One thing we probably should do, and that would help irqbalance > immensely, is to export a bitmask for which cpus an interrupt CAN go to, > next to where the current binding interface is. I'll check into that > > Hidetoshi: would it be possible to send me a /proc/interrupts file of > that machine? Here you are. This machine is not special. I guess all ia64 machine will show few or more but almost same lines. CPEI is #30. $ cat /proc/interrupts CPU0 CPU1 28: 0 0 LSAPIC cpe_poll 29: 0 0 LSAPIC cmc_poll 30: 0 0 IO-SAPIC-level cpe_hndlr 31: 0 0 LSAPIC cmc_hndlr 34: 4643 1881067 IO-SAPIC-edge ide0 39: 0 0 IO-SAPIC-level acpi 45: 148 560 IO-SAPIC-edge serial 48: 0 0 IO-SAPIC-level uhci_hcd 49: 0 0 IO-SAPIC-level uhci_hcd 50: 0 0 IO-SAPIC-level ehci_hcd 51: 21131 1257790 IO-SAPIC-level eth0 53: 21778 458314 IO-SAPIC-level ioc0 54: 0 44 IO-SAPIC-level ioc1 232: 0 0 LSAPIC mca_rdzv 238: 0 0 LSAPIC perfmon 239: 214832233 214832003 LSAPIC timer 240: 0 0 LSAPIC mca_wkup 254: 209193 611 LSAPIC IPI ERR: 0 Thanks, H.Seto - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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