On Tue, Mar 14, 2006 at 11:48:14AM +0100, OxY wrote: > hi! > > i have a Marwell (SMC) gigabit ethernet card (sk0) and > have serious problems with performance.. > the machine is a pc, amd 2000+ xp, 512mb ram. > > tested with iperf (bidirectional test, udp transfer, not stream) > and got 8-15% packet drop when the system was idle. >
There is a modified sk(4) driver at http://people.freebsd.org/~yongari/sk/sk_test/if_sk.c http://people.freebsd.org/~yongari/sk/sk_test/if_skreg.h Would you please give it try? I can't sure but you would get better results as the new driver uses one lock for standard MTU size and supports Tx TCP checksum offload and Rx IP checksum offload. I could push 32bit PCI NIC(DGE-530T) to the PCI bus limit on sparc64. > then tuned the sysctl with these settings: > > kern.ipc.maxsockbuf=81920000 > kern.ipc.nmbclusters=5000000000 > kern.ipc.somaxconn=8192 > net.inet.tcp.inflight.enable=1 > net.inet.raw.recvspace=4096 > net.inet.tcp.recvspace=131072 > kern.ipc.shmmax=409600000 > > with these i got around 3-7% packet drop, > but it's very high compared to zero :) > > my question is where/what should i optimize to not > have packet drop at all, or at least reduce it as much as > possible. > > thanks for your help! > > Csaba Banhalmi, HU -- Regards, Pyun YongHyeon _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
