Seems to be a rather common issue with the e1000 module. I searched the
archives back to 2005. Plenty of reports, no solutions.
The NIC does drop the link, PC does not hang. The link does become active
again. Wouldn't be such an issue, although this PC is a file server for
streaming audio and video files exported across nfs and cifs shares. Quite
an annoying problem to get 55minutes into a movie to have the link die.
NOTE: No the link does not die with every movie. This seems to be
completely random. I can flood the _server_ with 15 incoming connections
continuously for 30 minutes and there's no problem. Or I can simply ping -
c4 server and receive a Tx Unit Hang.
Machine specs -
Slackware x86_64 -current
Pure Virgin Kernel 2.6.32.8 (have noticed issue with previous kernels)
7GB Ram
AMD RS780
Migrated same card to another machine to rule out +4GB question that is
always. And another Chipset to test.
Intel P45, 2GB Ram - same issue
VMware Player is currently installed. Issue presents itself when VMware is
removed and/or VMware modules are not loaded.
See below for modinfo, dmesg, IRQ's, lspci and some ethtool output
Partial dmesg
[43503.704198] e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang
[43503.704199] Tx Queue <0> [43503.704200] TDH
<c7> [43503.704201] TDT <da> [43503.704201]
next_to_use <da> [43503.704202] next_to_clean <c8>
[43503.704202] buffer_info[next_to_clean] [43503.704203] time_stamp
<1029335c6> [43503.704203] next_to_watch <c9> [43503.704204]
jiffies <102933c78> [43503.704205] next_to_watch.status
<0> [43505.704209] e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang
[43505.704211] Tx Queue <0> [43505.704212] TDH
<c7> [43505.704212] TDT <da> [43505.704213]
next_to_use <da> [43505.704214] next_to_clean <c8>
[43505.704214] buffer_info[next_to_clean] [43505.704215] time_stamp
<1029335c6> [43505.704215] next_to_watch <c9> [43505.704216]
jiffies <102934448> [43505.704216] next_to_watch.status
<0> [43507.704182] e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang
[43507.704183] Tx Queue <0> [43507.704184] TDH
<c7> [43507.704185] TDT <da> [43507.704185]
next_to_use <da> [43507.704186] next_to_clean <c8>
[43507.704186] buffer_info[next_to_clean] [43507.704187] time_stamp
<1029335c6> [43507.704187] next_to_watch <c9> [43507.704188]
jiffies <102934c18> [43507.704189] next_to_watch.status
<0>
modinfo e1000|grep ^version
version: 7.3.21-k5-NAPI
ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: umbg
Wake-on: g
Current message level: 0x00000007 (7) Link detected: yes
ethtool -i eth0
driver: e1000
version: 7.3.21-k5-NAPI
firmware-version: N/A
bus-info: 0000:02:06.0
ethtool -g eth0
Ring parameters for eth0:
Pre-set maximums:
RX: 4096
RX Mini: 0
RX Jumbo: 0
TX: 4096
Current hardware settings:
RX: 256
RX Mini: 0
RX Jumbo: 0
TX: 256
ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp segmentation offload: on
udp fragmentation offload: off
generic segmentation offload: on
lspci -vv
02:06.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet
Controller (rev 05)
Subsystem: Intel Corporation PRO/1000 GT Desktop Adapter Control:
I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 64 (63750ns min), Cache Line Size: 4 bytes Interrupt: pin
A routed to IRQ 20
Region 0: Memory at fdec0000 (32-bit, non-prefetchable)
[size=128K]
Region 1: Memory at fdea0000 (32-bit, non-prefetchable)
[size=128K]
Region 2: I/O ports at df00 [size=64] [virtual] Expansion ROM at
fdf00000 [disabled] [size=128K] Capabilities: [dc] Power
Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0
+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=1 PME-
Capabilities: [e4] PCI-X non-bridge device
Command: DPERE- ERO+ RBC=512 OST=1
Status: Dev=00:00.0 64bit- 133MHz- SCD- USC- DC=simple
DMMRBC=2048 DMOST=1 DMCRS=8 RSCEM- 266MHz- 533MHz-
Kernel driver in use: e1000
Kernel modules: e1000
cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 129 0 374 2 IO-APIC-edge timer
1: 0 0 2 0 IO-APIC-edge i8042
8: 0 0 17 0 IO-APIC-edge rtc0
9: 0 0 0 0 IO-APIC-fasteoi acpi
12: 0 0 4 0 IO-APIC-edge i8042
14: 2 29 1067022 7488 IO-APIC-edge
pata_atiixp
15: 0 0 0 0 IO-APIC-edge
pata_atiixp
16: 2 80 5953112 20785 IO-APIC-fasteoi
ohci_hcd:usb3, ohci_hcd:usb4, HDA Intel
17: 0 0 4 0 IO-APIC-fasteoi
ehci_hcd:usb1
18: 0 80 2809310 15755 IO-APIC-fasteoi
ohci_hcd:usb5, ohci_hcd:usb6, ohci_hcd:usb7, HDA Intel, nvidia
19: 0 0 0 0 IO-APIC-fasteoi
ehci_hcd:usb2
20: 14 566 23527069 92044 IO-APIC-fasteoi eth0
22: 7 215 2493511 18964 IO-APIC-fasteoi
ahci, firewire_ohci
NMI: 0 0 0 0 Non-maskable interrupts
LOC: 66407712 37087457 32777253 29849036 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 0 0 0 0 Performance monitoring
interrupts
PND: 0 0 0 0 Performance pending
work
RES: 22471181 27170295 14818184 14992262 Rescheduling interrupts
CAL: 282347 218071 159212 205899 Function call
interrupts
TLB: 549650 571693 491287 469560 TLB shootdowns TRM:
0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 Threshold APIC
interrupts
MCE: 0 0 0 0 Machine check
exceptions
MCP: 376 376 376 376 Machine check polls
ERR: 0
MIS: 0
ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:0e:0c:c2:82:04
inet addr:192.168.1.109 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::20e:cff:fec2:8204/64 Scope:Link UP BROADCAST
RUNNING MULTICAST MTU:1500 Metric:1 RX packets:21429857
errors:58 dropped:446 overruns:0 frame:29 TX packets:16592984
errors:0 dropped:0 overruns:0 carrier:0 collisions:0
txqueuelen:1000
RX bytes:26437196186 (24.6 GiB) TX bytes:10820406728 (10.0 GiB)
If I upgrade to version e1000-8.0.19 Tx Unit Hang appears immediately
after the e1000 module is loaded.
Using ethtool to turn off rx,tx,sg,tso, and gso things appear to work
better. But - in that case, a $5 r8169 performs just as well.
Full dmesg in next post.
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