On Wed, May 22, 2013 at 12:42 PM, Luigi Rizzo <ri...@iet.unipi.it> wrote:
> all that work on paravirtualization (as presented at bsdcan) > > http://info.iet.unipi.it/~luigi/netmap/talk-bsdcan-2013.html > > just to discover that simply enabling DEVICE_POLLING (10-years old > technology) gives the same performance gains plus livelock-avoidance. > > And no, linux's NAPI is nowhere near us. > > cheers > luigi > A couple of years ago I started working on upstreaming some DEVICE_POLLING improvements from $WORK that incorporated feedback from polled interfaces to drive rescheduling of a polling iteration (rather than waiting for the next hardclock() to reschedule polling) but I never finished it. It works fine, but I didn't get a chance to test performance. It's available here: https://gitorious.org/~rysto/freebsd/rystos-freebsd-head/commit/e27db681b96cced7d3128ad3268f2cbf7474925a In the same repository I also have a branch that extends DEVICE_POLLING to work with multiple netisr threads. _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
