Hi, On 29/10/2010 18:23, Chuck Swiger wrote: > On Oct 28, 2010, at 11:39 PM, Коньков Евгений wrote: >> so using polling on gigabit NICs is a bottle neck? and is cause of low >> performance, is not? > > Simple answer is yes. It should be possible that you could tune polling to > get similar performance, or at least better performance than you see now, but > the additional hardware capabilities of gigabit NICs are likely to outperform > polling mode, just as polling mode can generally outperform old 100MBs > ethernet NICs.
I have been using polling for a long time with em and fxp interfaces on 6.2 and 4.9 boxes that are working as routers. I've been doing testing with FreeBSD 8 and em interfaces recently, and my experience agrees with Chuck's statement - that polling makes things worse when you use new (anything in the last 2 or 3 years) hardware with good quality gigabit ethernet interfaces. I've only really worked with bge and em but they have good high performance without polling in 8.0 and 8.1 Paul. _______________________________________________ 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"
