Re: The core in which NAPI is using

Hi.. On Fri, Aug 26, 2011 at 18:36, J.Hwan Kim <frog1120@gmail.com> wrote:

Hi, everyone

My ethernet card always interrupts at Core 0 . The driver of the device is using NAPI. When NAPI is appled, does the core in which NAPI is processing vary? Is the NAPI triggered by software interrupt, isn't it?

if you mean "software interrupt" is somekind of timer, then I think yes. Instead of relying on interrupt coming from the devices, NAPI uses (tight) polling in order to match the speed of incoming/outgoing packet bursts. -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com