On 4/30/07, Quan Sun <[EMAIL PROTECTED]> wrote:
Hi, Recently I met a problem on different scheduler behavior between 2.4.22 and 2.6.18.8. The application works as a proxy, it listen on an interface, connect through another interface. This application works on a box with two Xeon cpu, each of them is hyper-threading. On 2.4.22, CPU0 serve interrupts, the application works on other three CPUs. But on 2.6.18.8, if I turn on 'noirqbalance' kernel parameter, the application will stuck to CPU0 as well as interrupts after several seconds' working. Then there will be a 0% idle cpu, and three 100% idle CPUs. I have also tried irqbalance on 2.6.18.8, but the performance is not as good as 2.4.22 too. It seems that scheduler ignores the working load of interrupts.My question is, is there a way to tune 2.6 kernel working as 2.4? Just one cpu for interrupts, other three cpu for normal work.
I am no expert but why do you need to do this? Can you leave this to linux itself? Scheduler in 2.6 kernels performs better than 2.4 kernels. Did you try tweaking your timer frequency and preemptible kernel for better performance? I hope this will help you. Thanks ~psr
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