M On Mon, Jun 28, 2010 at 12:37 PM, Mike Carlson <carlso...@llnl.gov> wrote: > I've got a 10Gb intel nic on a FreeBSD 8.0-p3/AMD64 system, using the ix > driver: > > ix0: <Intel(R) PRO/10GbE PCI-Express Network Driver, Version - 1.8.9> port > 0xdce0-0xdcff mem 0xdf3a0000-0xdf3bffff,0xdf3c0000- > 0xdf3fffff,0xdf39c000-0xdf39ffff irq 35 at device 0.0 on pci5 > ix0: Using MSIX interrupts with 17 vectors > ix0: [ITHREAD] > ... > ix0: Ethernet address: 00:1b:21:3f:b5:fc > > ix0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9194 > > options=5bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,LRO> > ether 00:1b:21:3f:b5:fc > inet 192.168.6.56 netmask 0xffffff00 broadcast 192.168.6.255 > media: Ethernet autoselect (10Gbase-LR <full-duplex>) > status: active > > What seems a bit odd is even when they system is 'idle', netstat reports a > burst of outgoing data at an unpredictable interval: > # netstat -I ix0 -w 1 > input (ix0) output > packets errs bytes packets errs bytes colls > 1 0 496 1 0 18446744073709551436 0 > 1 0 252 1 0 0 0 > 28 0 19768 42 0 0 0 > 2 0 316 1 0 0 0 > 1 0 252 1 0 0 0 > > That large "burst" becomes more frequent if there is a reasonable network > load on the server (like a NFS or Samba file transfer): > # netstat -I ix0 -w 1 > input (ix0) output > packets errs bytes packets errs bytes colls > 1 0 496 1 0 18446744073709551436 0 > 1652 0 1601979 2310 0 113716 0 > 337 0 521230 397 0 18446744073709437900 0 > 7562 0 276543 14580 0 21130649 0 > 33784 0 90243561 65289 0 6398014 0 > 34929 0 101041195 67431 0 18446744073708070746 0 > 36180 0 102019403 70112 0 932461 0 > 36337 0 104575965 70340 0 18446744073708694467 0 > 35933 0 104627291 69241 0 18446744073707935998 0 > 36498 0 104697232 70544 0 18446744073709094889 0 > 36580 0 106044621 70737 0 18446744073708270130 0 > 22934 0 80783509 44337 0 18446744073694340268 0 > 11469 0 34850586 22131 0 18446744073707453470 0 > 15661 0 40976798 30191 0 3816924 0 > 14885 0 40763491 28572 0 1794493 0 > 14554 0 47191162 28140 0 18446744073703905316 0 > 16620 0 43843276 32154 0 3277056 0 > 11800 0 38234856 22832 0 18446744073704976762 0 > 14640 0 37771926 28340 0 3720383 0 > 12230 0 37078829 23631 0 18446744073707401669 0 > > Is this normal? Or, is there something strange about my network environment, > and if so, are there any suggestions to help me narrow down the issue?
Have you tried running tcpdump -i ix0 to see what the 42 packets were when its "idle?" -aps _______________________________________________ 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"
