On Tue, Oct 14, 2008 at 12:05 PM, Don Porter <porterde@xxxxxxxxxxxxx> wrote: > What I am observing is that a single ksoftirqd thread is becoming a > bottleneck for the system. > More specifically, one cpu runs ksoftirqd at 100% cpu utilization, while 4 > cpus each run their servers at about 25%. I carefully used > sched_setaffinity() to map server threads to cpus and > /proc/irq/<device>/smp_affinity to map hardware interrupts to cpus such that > there should be exactly 1 cpu per server thread and 1 cpu for servicing > hardware interrupts per device. Could you provide some more detail about the smp_affinity mask you're setting? I can push a pretty constant 5.9gbps out of a 6gb bond device (2 x forcedeth, 4 x e1000) using the 1 IRQ/CPU method. -- 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
