On 05/13/2013 03:43, Meny Yossefi wrote: > Hi, > > I'm running FreeBSD 9.1. > I was wandering if there's a way to distribute hardware interrupts (pinning > an interrupt handler to a specific CPU) across processors for performance > benefits. > Linux has a process called irqbalancer for exactly that purpose. Is there an > equivalent in FreeBSD ?
Hi Meny. A driver can use bus_bind_intr(9) for this purpose. It assigns the MSI-X signalling and the corresponding interrupt thread (if any) to the given CPU. sys/dev/ixgbe/ixgbe.c is a good example. This capability is exposed to user-land via cpuset(2) and cpuset(1). Note that these are static assignments. To my knowledge, there is no FreeBSD equivalent of Linux's irqbalance, which dynamically shuffles IRQs based on runtime behavior. I would be delighted if I'm wrong. :) Regards, Eric _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "freebsd-performance-unsubscr...@freebsd.org"
