igb broken? Unexplained weirdness with intel 82576 nics on a
supermicro board.
joe
joe at hostedcontent.com
Sat May 8 10:02:01 UTC 2010
On 05/08/2010 05:08 AM, joe wrote:
> I have 3 boxes, each with two nics. One nic for the private network
> and one for the public network.
> The private network is all on the same vlan. All 6 nics are on the
> same switch. All connections are 1000tx Full Duplex.
>
> I will call the servers Box A, Box B, and Box C.
>
> When i FTP data between Box A & B i get abou 25MB/sec.
> When i FTP data from Box C to Box A or B, i get about 20MB/sec.
> When i FTP data from Box A to C i get 10MB/sec
> When i FTP data from Box B to C i get 200KB/sec...
>
> Can anyone suggest why i might only be getting 200KB when transfering
> data from Box B to C but not when transferring data from Box A to C?
>
> I tried installing ubuntu to see if the problem was still there and it
> is not. I can FTP data from Box A or B to box C at 10MB/sec, still not
> the gigabit speeds i should be seeing but not the 200KB/sec i am
> getting with freebsd.
>
> I logged into my switch and it reports that the ports are 1000tx full
> duplex, the same as what freebsd is reporting. The switch & freebsd
> also report no errors.
>
> I really dont know what to do. Nothing anywhere reports showing a
> problem but obviously there is a problem somewhere. I've tried drivers
> 1.9.5, 1.8.4, and 1.7.3. If i use 1.8.4 or 1.7.3 i get 50KB/sec
> transferring data from box B whereas if i use 1.9.5 i get 200-300KB
> sec. I should be getting like 50MB/sec ;(
>
> Any help would be grateful. Or, maybe someone could put me in touch
> with the person responsible for the intel nic drivers and i can work
> with them on resolving this issue?
>
> Thanks in advance.
>
>
> Name Mtu Network Address Ipkts Ierrs Idrop
> Opkts Oerrs Coll
> igb0 1500 <Link#1> 00:30:48:9f:11:04 25853 0 0
> 18340 0 0
> igb0 1500 216.105.91.14 216.105.91.145 19040 - -
> 18343 - -
> igb1* 1500 <Link#2> 00:30:48:9f:11:05 0 0
> 0 0 0 0
> lo0 16384 <Link#3> 72 0 0
> 72 0 0
> lo0 16384 127.0.0.0/8 127.0.0.1 72 - -
> 72 - -
>
> Sysctl info for igb0/1
> dev.igb.0.%desc: Intel(R) PRO/1000 Network Connection version - 1.8.4
> dev.igb.0.%driver: igb
> dev.igb.0.%location: slot=0 function=0
> dev.igb.0.%pnpinfo: vendor=0x8086 device=0x10c9 subvendor=0x15d9
> subdevice=0x0100 class=0x020000
> dev.igb.0.%parent: pci1
> dev.igb.0.debug: -1
> dev.igb.0.stats: -1
> dev.igb.0.flow_control: 3
> dev.igb.0.enable_aim: 1
> dev.igb.0.low_latency: 128
> dev.igb.0.ave_latency: 450
> dev.igb.0.bulk_latency: 1200
> dev.igb.0.rx_processing_limit: 100
>
> Debug info for igb0
> May 8 09:17:57 debbie kernel: igb0: TX(1) Packets sent = 1295
> May 8 09:17:57 debbie kernel: igb0: Queue(2) tdh = 106, tdt = 106
> May 8 09:17:57 debbie kernel: igb0: TX(2) no descriptors avail event = 0
> May 8 09:17:57 debbie kernel: igb0: TX(2) MSIX IRQ Handled = 5353
> May 8 09:17:57 debbie kernel: igb0: TX(2) Packets sent = 5450
> May 8 09:17:57 debbie kernel: igb0: Queue(3) tdh = 1687, tdt = 1687
> May 8 09:17:57 debbie kernel: igb0: TX(3) no descriptors avail event = 0
> May 8 09:17:57 debbie kernel: igb0: TX(3) MSIX IRQ Handled = 1335
> May 8 09:17:57 debbie kernel: igb0: TX(3) Packets sent = 1354
> May 8 09:17:57 debbie kernel: igb0: Queue(0) rdh = 425, rdt = 424
> May 8 09:17:57 debbie kernel: igb0: RX(0) Packets received = 16809
> May 8 09:17:57 debbie kernel: igb0: RX(0) Split Packets = 12262
> May 8 09:17:57 debbie kernel: igb0: RX(0) Byte count = 25894129
> May 8 09:17:57 debbie kernel: igb0: RX(0) MSIX IRQ Handled = 43428
> May 8 09:17:57 debbie kernel: igb0: RX(0) LRO Queued= 13601
> May 8 09:17:57 debbie kernel: igb0: RX(0) LRO Flushed= 9966
> May 8 09:17:57 debbie kernel: igb0: Queue(1) rdh = 1700, rdt = 1699
> May 8 09:17:57 debbie kernel: igb0: RX(1) Packets received = 1700
> May 8 09:17:57 debbie kernel: igb0: RX(1) Split Packets = 937
> May 8 09:17:57 debbie kernel: igb0: RX(1) Byte count = 1392691
> May 8 09:17:57 debbie kernel: igb0: RX(1) MSIX IRQ Handled = 31888
> May 8 09:17:57 debbie kernel: igb0: RX(1) LRO Queued= 1362
> May 8 09:17:57 debbie kernel: igb0: RX(1) LRO Flushed= 1351
> May 8 09:17:57 debbie kernel: igb0: Queue(2) rdh = 33, rdt = 32
> May 8 09:17:57 debbie kernel: igb0: RX(2) Packets received = 6177
> May 8 09:17:57 debbie kernel: igb0: RX(2) Split Packets = 1442
> May 8 09:17:57 debbie kernel: igb0: RX(2) Byte count = 2518498
> May 8 09:17:57 debbie kernel: igb0: RX(2) MSIX IRQ Handled = 36258
> May 8 09:17:57 debbie kernel: igb0: RX(2) LRO Queued= 5794
> May 8 09:17:57 debbie kernel: igb0: RX(2) LRO Flushed= 5673
> May 8 09:17:57 debbie kernel: igb0: Queue(3) rdh = 1418, rdt = 1417
> May 8 09:17:57 debbie kernel: igb0: RX(3) Packets received = 1418
> May 8 09:17:57 debbie kernel: igb0: RX(3) Split Packets = 939
> May 8 09:17:57 debbie kernel: igb0: RX(3) Byte count = 1700710
> May 8 09:17:57 debbie kernel: igb0: RX(3) MSIX IRQ Handled = 31399
> May 8 09:17:57 debbie kernel: igb0: RX(3) LRO Queued= 1102
> May 8 09:17:57 debbie kernel: igb0: RX(3) LRO Flushed= 882
> May 8 09:17:57 debbie kernel: igb0: LINK MSIX IRQ Handled = 2
> May 8 09:17:57 debbie kernel: igb0: Mbuf defrag failed = 0
> May 8 09:17:57 debbie kernel: igb0: Std mbuf header failed = 0
> May 8 09:17:57 debbie kernel: igb0: Std mbuf packet failed = 0
> May 8 09:17:57 debbie kernel: igb0: Driver dropped packets = 0
> May 8 09:17:57 debbie kernel: igb0: Driver tx dma failure in xmit = 0
>
>
> sysctl status info:
> May 8 09:19:08 debbie kernel: igb0: Excessive collisions = 0
> May 8 09:19:08 debbie kernel: igb0: Sequence errors = 0
> May 8 09:19:08 debbie kernel: igb0: Defer count = 0
> May 8 09:19:08 debbie kernel: igb0: Missed Packets = 0
> May 8 09:19:08 debbie kernel: igb0: Receive No Buffers = 0
> May 8 09:19:08 debbie kernel: igb0: Receive Length Errors = 0
> May 8 09:19:08 debbie kernel: igb0: Receive errors = 0
> May 8 09:19:08 debbie kernel: igb0: Crc errors = 0
> May 8 09:19:08 debbie kernel: igb0: Alignment errors = 0
> May 8 09:19:08 debbie kernel: igb0: Collision/Carrier extension
> errors = 0
> May 8 09:19:08 debbie kernel: igb0: RX overruns = 0
> May 8 09:19:08 debbie kernel: igb0: watchdog timeouts = 0
> May 8 09:19:08 debbie kernel: igb0: XON Rcvd = 17
> May 8 09:19:08 debbie kernel: igb0: XON Xmtd = 0
> May 8 09:19:08 debbie kernel: igb0: XOFF Rcvd = 17
> May 8 09:19:08 debbie kernel: igb0: XOFF Xmtd = 0
> May 8 09:19:08 debbie kernel: igb0: Good Packets Rcvd = 26159
> May 8 09:19:08 debbie kernel: igb0: Good Packets Xmtd = 21564
> May 8 09:19:08 debbie kernel: igb0: TSO Contexts Xmtd = 1687
> May 8 09:19:08 debbie kernel: igb0: TSO Contexts Failed = 0
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Follow UP:
FTP to Server A from Server C: 243187792 bytes sent in 00:04 (53.59 MB/s)
FTP to Server C from Server A: 243187792 bytes received in 00:21 (10.72
MB/s)
FTP to Server B from Server C: 243187792 bytes sent in 00:06 (36.26 MB/s)
FTP to Server C from Server B: 705176 bytes received in 00:17 (38.91
KB/s) (i aborted)
HDD Info for Server C:
debbie# dd if=/dev/ad6 of=/dev/null bs=1m count=300
300+0 records in
300+0 records out
314572800 bytes transferred in 5.163595 secs (60921277 bytes/sec)
/dev/ad6
512 # sectorsize
300069052416 # mediasize in bytes (279G)
586072368 # mediasize in sectors
0 # stripesize
0 # stripeoffset
581421 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
5NF1MQTR # Disk ident.
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