On 05/12/2007, Philipp Wuensche <[EMAIL PROTECTED]> wrote: > As I understand it, and correct me if I'm wrong, polling helps against > high interrupt rates but for that intel gigabit cards have interrupt > moderation. We don't have a problem with interrupts (20% CPU) at the > moment but with system (100% CPU) as you can see in the system > monitoring graphs. Interrupts sometimes peak at, but usually are under, > the 2k interrupts/sec limit.
Begin by reading up on the hardware profiling support (hwpmc, pmc, etc) and see if you can get some system and process-specific profiling information. Kernel/System profiling will probably show you an interesting thing or two. One thing I noticed was high in my high-TCP-transaction tests (but not on hardware anywhere near as nice as yours!) was crypto calls for, IIRC, syncookies. Adrian -- Adrian Chadd - [EMAIL PROTECTED] _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[EMAIL PROTECTED]"
