Thomas, can you try if_em driver from HEAD and check whether this help. There were some work done during 5.3-RELEASE.
On Fri, Jan 28, 2005 at 06:18:19PM +0100, Thomas Vogt wrote: T> netstat -w 1 (polling disabled) T> input (Total) output T> packets errs bytes packets errs bytes colls T> 300531 0 23441438 300585 0 23444792 0 T> 300939 0 25872898 300895 0 25870184 0 T> 300738 0 23457584 300768 0 23460626 0 T> 300304 10 25826466 300304 0 25826876 0 T> ... T> T> Interrupt load is about 70% with net.inet.ip.fastforwarding enabled. If T> I disable this the system becomes unusable. T> The system hasn't reach the limit yet. But the interrupt is much to T> high. It's not worthy to add a second udp sender machine, at the moment. T> T> T> netstat -w 1 (polling enabled) T> input (Total) output T> packets errs bytes packets errs bytes colls T> 150151 47647 12910330 150150 0 12911806 0 T> 150151 0 11711798 150152 0 11711876 0 T> 150151 47665 12910986 150151 0 12911810 0 T> 150151 0 11711798 150151 0 11711798 0 T> ... T> T> Interrupt load is about 10%. CPU is about 60% and with T> kern.polling.idle_poll enabled it goes to 100% (as expected). T> T> As you see the speed is droping down to 50% with polling enable and and T> I got a lot of errors. T> kern.polling.lost_polls: 188748 and kern.polling.suspect: 186919 are T> also very high. I don't know why polling is so bad on this machine. All T> SMP option are disabled in the kernel and bios. T> I tried to do as much as in T> http://lists.freebsd.org/pipermail/freebsd-questions/2004-November/064427.html described. T> T> I will prepare others tests with -STABLE and -CURRENT in the next few T> days. At the mean time, are they some other magic things config option I T> can try? Perhaps increase the HZ to 2000 in the kernel or remove polling T> and try smp machine? I doubt that I can run the machine without polling. T> If you see 70% interrupt load with 300k pps without polling. T> T> regards T> Thomas Vogt T> T> _______________________________________________ T> freebsd-net@freebsd.org mailing list T> http://lists.freebsd.org/mailman/listinfo/freebsd-net T> To unsubscribe, send any mail to "[EMAIL PROTECTED]" -- Totus tuus, Glebius. GLEBIUS-RIPN GLEB-RIPE _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
