The only additions to the kernel config are PF and ALTQ. After upgrading from 8.0 to 8.1-RELEASE, throughput has been terrible with this card. I have it connected to a 100baseTX switch. Using iperf between this machine and another machine I measure only 1.80Mbits/sec coming in but the full 94.8Mbits/sec going out. I just upgraded to 8-STABLE hoping for some improvement, but the results are the same. Now just to be sure, I copied the 8.0-RELEASE em / e1000 driver over to 8-STABLE, rebuilt the kernel, and measured 94.6Mbits/sec coming in and 87.4Mbits/sec going out. It seems that the post-8.0 driver performs better when transmitting but there is something seriously wrong with the reception of traffic. dmesg: FreeBSD 8.1-RELEASE-p2 #2: Fri Dec 3 15:58:41 PST 2010 <snip> em0: <Intel(R) PRO/1000 Legacy Network Connection 1.0.1> port 0xcc00-0xcc3f mem 0xfdfe0000-0xfdffffff,0xfdfc0000-0xfdfdffff irq 16 1 em0: [FILTER] em0: Ethernet address: 00:07:e9:19:f0:cc FreeBSD 8.2-PRERELEASE #3: Fri Dec 3 22:28:42 PST 2010 <snip> em0: <Intel(R) PRO/1000 Legacy Network Connection 1.0.3> port 0xcc00-0xcc3f mem 0xfdfe0000-0xfdffffff,0xfdfc0000-0xfdfdffff irq 16 1 em0: [FILTER] em0: Ethernet address: 00:07:e9:19:f0:cc sysctl -a: dev.em.0.%desc: Intel(R) PRO/1000 Legacy Network Connection 1.0.3 dev.em.0.%driver: em dev.em.0.%location: slot=4 function=0 dev.em.0.%pnpinfo: vendor=0x8086 device=0x100e subvendor=0x8086 subdevice=0x002e class=0x020000 dev.em.0.%parent: pci1 <snip for being too long> ifconfig -a: em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC> ether 00:07:e9:19:f0:cc inet 24.176.175.198 netmask 0xfffffff8 broadcast 24.176.175.199 media: Ethernet autoselect (100baseTX <full-duplex>) status: active How-To-Repeat: Use same or similar chipset and compare performance between 8.0 and 8.1+ I believe the card is named "Intel PRO/1000 MT Desktop RT"
Responsible Changed From-To: freebsd-bugs->freebsd-net Over to maintainer(s).
I'm seeing the exact same problem here as the original poster. Is anybody looking at this? Running FreeBSD 8.2-RELEASE-p1 amd64, from FreeNAS 8.0 sysctls: dev.em.0.%desc: Intel(R) PRO/1000 Network Connection 7.1.9 dev.em.0.%driver: em dev.em.0.%location: slot=0 function=0 dev.em.0.%pnpinfo: vendor=0x8086 device=0x108b subvendor=0x8086 subdevice=0x0000 class=0x020000 dev.em.0.%parent: pci1 dev.em.0.nvm: -1 dev.em.0.debug: -1 ... ifconfig: em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC> ether 00:15:17:31:c8:fe inet 139.171.199.13 netmask 0xffffff00 broadcast 139.171.199.255 media: Ethernet autoselect (1000baseT <full-duplex>) status: active dmesg | grep em0 em0: <Intel(R) PRO/1000 Network Connection 7.1.9> port 0xbc00-0xbc1f mem 0xff6e0000-0xff6fffff irq 16 at device 0.0 on pci1 em0: Using an MSI interrupt em0: [FILTER] em0: Ethernet address: 00:15:17:31:c8:fe -- Michael W. Lucas http://www.MichaelWLucas.com/, http://blather.MichaelWLucas.com/ Latest book: Network Flow Analysis http://www.networkflowanalysis.com/ mwlucas@BlackHelicopters.org, Twitter @mwlauthor
This looks sounds like some features missing between if_em.c and if_lem.c Is this still happening in your tests?
Timing out 2 year old ticket. If possible please take a look at 10.2r and see what your performance is.