On Thu, Aug 30, 2012 at 03:32:25PM -0500, Adam Vande More wrote: > On Thu, Aug 30, 2012 at 4:11 AM, Lev Serebryakov <l...@freebsd.org> wrote: > > > Hello, Ian. > > You wrote 30 ??????? 2012 ?., 10:23:56: > > > > >> Yep, I'll collapse my two-rule chains in one rule. > > IS> I guess if the issue persists, we may need to see more of your ruleset. > > Not a problem at all, here it is: > > http://lev.serebryakov.spb.ru/_sklad/firewall.ipfw > > > > IS> Hmm, you shouldn't see ANY pppoe traffic on ng0, only on the interface > > IS> mpd5 uses to connect with your DSL modem/bridge. Nor would you expect > > Yep. I didn't see it. My question is, really: why vr1 (my physical > > interface, used to connect to my ISP) takes 50%+ of CPU when traffic > > is only 40mbit/s down and about 20mbit/s up (with many connections)? > > > Have you taken this into account from vr(4)?
I was indeed going to mention something like this. Old/slow machines often have very low memory bandwidth, so the rule 1GHz<->1 Gbit/s does not really apply. cheers luigi > BUGS > The vr driver always copies transmit mbuf chains into longword-aligned > buffers prior to transmission in order to pacify the Rhine chips. If > buffers are not aligned correctly, the chip will round the supplied > buffer address and begin DMAing from the wrong location. This buffer > copying impairs transmit performance on slower systems but cannot be > avoided. On faster machines (e.g. a Pentium II), the performance > impact > is much less noticeable. > -- > Adam Vande More > _______________________________________________ > 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" _______________________________________________ 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"
