--- Patrick McHardy <[EMAIL PROTECTED]> wrote:
> Danial Thom wrote: > > I just started fiddling with 2.6.12, and > there > > seems to be a big drop-off in performance > from > > 2.4.x in terms of networking on a > uniprocessor > > system. Just bridging packets through the > > machine, 2.6.12 starts dropping packets at > > ~100Kpps, whereas 2.4.x doesn't start > dropping > > until over 350Kpps on the same hardware > (2.0Ghz > > Opteron with e1000 driver). This is pitiful > > prformance for this hardware. I've > > increased the rx ring in the e1000 driver to > 512 > > with little change (interrupt moderation is > set > > to 8000 Ints/second). Has "tuning" for MP > > destroyed UP performance altogether, or is > there > > some tuning parameter that could make a > 4-fold > > difference? All debugging is off and there > are > > no messages on the console or in the error > logs. > > The kernel is the standard kernel.org dowload > > config with SMP turned off and the intel > ethernet > > card drivers as modules without any other > > changes, which is exactly the config for my > 2.4 > > kernels. > > Do you have netfilter enabled? Briging > netfilter was > added in 2.6, enabling it will influence > performance > negatively. Otherwise, is this performance drop > visible in other setups besides bridging as > well? > Yes, bridging is clean. I also routed with the same performance drop. Danial __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/