On Thursday, 25. January 2007 21:22, Svata Dedic wrote: > Hello, > > I am having troubles to set up network interfaces on our machine to > properly use SMP Linux features. There are two Broadcom Nextreme II > ethernet NICs onboard a 2x dual-core CPU machine. > > My kernel has SMP and Message-Signaled Interrupts (MSI) enabled. When I > boot with MSI enabled, I can see in /proc/interrupts that each of the > NICs got a unique interrupt assigned. But all traffic generated to the > 1st NIC goes to the CPU#0, other CPUs show 0 processed interrupts in the > /proc/interrupts. > > I tried to assign the interrupt to a specific CPU (single bit in > smp_affinity, tried each of the 4 CPU cores), with the same results; > althought smp_affinity said e.g. 4, everything was processed by CPU#0 > > When the machine booted with "pci=nomsi" kernel parameter, the NICs were > assigned a shared IO-APIC interrupt, but the intr processing was > properly distributed among CPU cores as requested by the affinity_mask. > > What am I doing wrong ? > There's a userspace irq balancer. Just look for a "programm"/"package" irqbalancer or irq-balancer. - To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
