--- On Wed, 9/9/09, Barney Cordoba <barney_cord...@yahoo.com> wrote:
> From: Barney Cordoba <barney_cord...@yahoo.com> > Subject: Re: em driver input errors > To: "Mike Tancsa" <m...@sentex.net> > Cc: freebsd-net@freebsd.org > Date: Wednesday, September 9, 2009, 7:40 AM > > > --- On Tue, 9/8/09, Mike Tancsa <m...@sentex.net> > wrote: > > > From: Mike Tancsa <m...@sentex.net> > > Subject: Re: em driver input errors > > To: "Barney Cordoba" <barney_cord...@yahoo.com> > > Cc: freebsd-net@freebsd.org > > Date: Tuesday, September 8, 2009, 6:21 PM > > At 05:42 PM 9/8/2009, Barney Cordoba > > wrote: > > > Manish What specific kinds of input errors are > you > > getting? How many PPS are you doing, what is the size > of the > > ring, and the interrupt modulation rate? Are the NICs > PCIe > > or PCIx? Barney > > > > In my case, our backup server (mix of dump via nfs and > some > > dumps through ssh as well as writes via samba mounts) > has a > > fairly low pps rate and starts to see input errors at > about > > 100Mb. Adding > > > > hw.em.rxd=4096 > > hw.em.txd=4096 > > > > and > > > > net.inet.tcp.recvbuf_max=16777216 > > net.inet.tcp.recvspace=131072 > > net.inet.tcp.sendbuf_max=16777216 > > net.inet.tcp.sendspace=131072 > > net.inet.udp.recvspace=65536 > > kern.ipc.somaxconn=1024 > > kern.ipc.maxsockbuf=4194304 > > net.inet.ip.redirect=0 > > net.inet.ip.intr_queue_maxlen=4096 > > net.route.netisr_maxqlen=1024 > > kern.ipc.nmbclusters=655360 > > > > didnt seem to make a difference in the amount of > errors I > > was seeing > > > > > > e...@pci0:7:5:0: class=0x020000 card=0x348f8086 > > chip=0x10768086 rev=0x05 hdr=0x00 > > vendor = 'Intel > > Corporation' > > device = 'Gigabit > > Ethernet Controller (82541EI)' > > class = network > > subclass = ethernet > > cap 01[dc] = powerspec 2 supports D0 > > D3 current D0 > > cap 07[e4] = PCI-X supports 2048 burst read, > > 1 split transaction > > > > Core(TM)2 Quad CPU Q6600 @ 2.40GHz, > > AMD64, RELENG_7 from Jun 18th > > > > Plenty of disk IO left and the CPUs doent seem to be > taxed > > that much. > > > > Sep 8 00:02:01 backup3 kernel: em1: Excessive > > collisions = 0 > > Sep 8 00:02:01 backup3 kernel: em1: Sequence errors > = > > 0 > > Sep 8 00:02:01 backup3 kernel: em1: Defer count = 0 > > Sep 8 00:02:01 backup3 kernel: em1: Missed Packets > = > > 61316 > > Sep 8 00:02:01 backup3 kernel: em1: Receive No > > Buffers = 0 > > Sep 8 00:02:01 backup3 kernel: em1: Receive Length > > Errors = 0 > > Sep 8 00:02:01 backup3 kernel: em1: Receive errors > = > > 0 > > Sep 8 00:02:01 backup3 kernel: em1: Crc errors = 0 > > Sep 8 00:02:01 backup3 kernel: em1: Alignment > errors > > = 0 > > Sep 8 00:02:01 backup3 kernel: em1: > Collision/Carrier > > extension errors = 0 > > Sep 8 00:02:01 backup3 kernel: em1: RX overruns = > > 22397 > > Sep 8 00:02:01 backup3 kernel: em1: watchdog > timeouts > > = 0 > > Sep 8 00:02:01 backup3 kernel: em1: RX MSIX IRQ = 0 > > TX MSIX IRQ = 0 LINK MSIX IRQ = 0 > > Sep 8 00:02:01 backup3 kernel: em1: XON Rcvd = 0 > > Sep 8 00:02:01 backup3 kernel: em1: XON Xmtd = 0 > > Sep 8 00:02:01 backup3 kernel: em1: XOFF Rcvd = 0 > > Sep 8 00:02:01 backup3 kernel: em1: XOFF Xmtd = 0 > > Sep 8 00:02:01 backup3 kernel: em1: Good Packets > Rcvd > > = 544276980 > > Sep 8 00:02:01 backup3 kernel: em1: Good Packets > Xmtd > > = 490475071 > > Sep 8 00:02:01 backup3 kernel: em1: TSO Contexts > Xmtd > > = 0 > > Sep 8 00:02:01 backup3 kernel: em1: TSO Contexts > > Failed = 0 > > > > > > pf is in the kernel as well > > > > > _______________________________________________ > > > 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" > > > > > -------------------------------------------------------------------- > > Mike Tancsa, > > > > tel +1 519 651 3400 > > Sentex Communications, > > > > m...@sentex.net > > Providing Internet since 1994 > > www.sentex.net > > Cambridge, Ontario Canada > > > > www.sentex.net/mike > > > > > > The 8241GI may not be able to handle full gigabit flows if > its only > wired at 32-bit 33Mhz, which is only capable of bursting to > 1Gb/s. With > a single NIC it likely just fine, but it a bridged or > firewall type > config you may just be seeing bus failures. > > Barney I meant 82541EI...Same answer. _______________________________________________ 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"
