On 3 February 2010 09:40, Daniel, Wu <[email protected]> wrote: > network card interrupt is bound to cpu 7. If cpu 7 is 100% used, but other > cpu are less than 30% used, will the network latency increase? > > I am not sure after bind the network interrupt to one cpu, whether other cpu > could help to server the network traffic in interrupt mode and polling mode.
Depends largely on how the driver is written and what latency you're measuring. Are you looking at application <-> application round trip times? If so, then clearly your app. needs to be scheduled to process the data and if the core it happens to be running on is constantly pre-empted by interrupts then latency will naturally increase. Paul -- Paul Durrant http://www.linkedin.com/in/pdurrant _______________________________________________ networking-discuss mailing list [email protected]
