Date: Wed, 15 Mar 2006 16:51:00 +0100 From: "OxY" <oxy@field.hu> To: <freebsd-net@freebsd.org>, <pyunyh@gmail.com> Subject: Re: problem with Marwell gigabit performance Message-ID: <000a01c64848$41d6f710$0201a8c0@oxy> References: <001101c64754$cbbd65d0$0201a8c0@oxy><20060315001806.GA52826@cdnetworks.co.kr> <000f01c64846$c7148840$0201a8c0@oxy>
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i forgot to mention the load is twice, than before and the transfer is speed is decreased from 20mbyte/s to 9mbyte/s ----- Original Message ----- From: "OxY" <oxy@field.hu> To: <freebsd-net@freebsd.org> Sent: Wednesday, March 15, 2006 4:40 PM Subject: Re: problem with Marwell gigabit performance > with the modified sk(4) driver i got the following: > > sk0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > options=2b<RXCSUM,TXCSUM,VLAN_MTU,JUMBO_MTU> > > the performance didn't changed, packet drops as usual... > when the system is 100% idle, packet drop is around 1%, > when i got ~0.80 load on the other (fxp0) interface, packet drop is 8-11% > may i change the card to intel or 3com, or what to do? > > ----- Original Message ----- > From: "Pyun YongHyeon" <pyunyh@gmail.com> > To: "OxY" <oxy@field.hu> > Cc: <freebsd-net@freebsd.org> > Sent: Wednesday, March 15, 2006 1:18 AM > Subject: Re: problem with Marwell gigabit performance > > >> 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 "freebsd-net-unsubscribe@freebsd.org"
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