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Date: Mon, 25 Dec 2006 19:38:29 -0500 (EST)
From: Justin Piszcz <jpiszcz@...idpixels.com>
To: linux-kernel@...r.kernel.org
Subject: Kernel 2.6.17.13: eth2: TX underrun, threshold adjusted.
I am using a dual port Intel NIC on an A-Bit IC7-G; any reason why I get
these?
[4298634.444000] eth2: TX underrun, threshold adjusted.
[4299146.645000] eth2: TX underrun, threshold adjusted.
[4299146.645000] eth2: TX underrun, threshold adjusted.
[4299147.437000] eth2: TX underrun, threshold adjusted.
[4299147.454000] eth2: TX underrun, threshold adjusted.
[4299149.442000] eth2: TX underrun, threshold adjusted.
[4299155.247000] eth2: TX underrun, threshold adjusted.
[4299159.271000] eth2: TX underrun, threshold adjusted.
[4299165.291000] eth2: TX underrun, threshold adjusted.
I see in the mailing list archives this error was most prevalent in 2.4.
However, it also shows up in 2.6:
http://lkml.org/lkml/2005/6/7/49
http://lkml.org/lkml/2004/5/19/20
http://www.ussg.iu.edu/hypermail/linux/kernel/0506.0/1512.html
http://www.ussg.iu.edu/hypermail/linux/kernel/0405.2/0535.html
I am using the e100 driver, MAC addr commented out with **.
[4294675.208000] eth2: 0000:04:04.0, 00:**:**:**:**:**, IRQ 18.
[4294675.209000] Receiver lock-up bug exists -- enabling work-around.
[4294675.209000] Board assembly 711269-003, Physical connectors present:
RJ45
[4294675.209000] Primary interface chip i82555 PHY #1.
[4294675.209000] General self-test: passed.
[4294675.209000] Serial sub-system self-test: passed.
[4294675.209000] Internal registers self-test: passed.
[4294675.209000] ROM checksum self-test: passed (0x24c9f043).
[4294675.211000] Receiver lock-up workaround activated.
[4294675.211000] ACPI: PCI Interrupt 0000:04:05.0[A] -> GSI 23 (level,
low) -> IRQ 17
[4294675.221000] eth3: 0000:04:05.0, 00:**:**:**:**:**, IRQ 17.
[4294675.222000] Receiver lock-up bug exists -- enabling work-around.
[4294675.222000] Board assembly 711269-003, Physical connectors present:
RJ45
[4294675.222000] Primary interface chip i82555 PHY #1.
[4294675.222000] General self-test: passed.
[4294675.222000] Serial sub-system self-test: passed.
[4294675.222000] Internal registers self-test: passed.
[4294675.222000] ROM checksum self-test: passed (0x24c9f043).
[4294675.222000] Receiver lock-up workaround activated.
I have other boards and I do not recall seeing the message about the
Receiver lock-up bug, could this be part of the reason for the TX
underrun?
Does it matter which PCI slot I place this card in? It is currently right
next to a PCI 3com 509 (thinnet).
$ cat /proc/interrupts
CPU0 CPU1
0: 6938534 0 IO-APIC-edge timer
1: 205 0 IO-APIC-edge i8042
4: 75106 0 IO-APIC-edge serial
8: 1 0 IO-APIC-edge rtc
9: 0 0 IO-APIC-level acpi
12: 9106 0 IO-APIC-edge i8042
14: 157428 2 IO-APIC-edge ide0
15: 63295 2 IO-APIC-edge ide1
16: 1224358 0 IO-APIC-level eth0
17: 171170 0 IO-APIC-level eth2, eth3
18: 4017 0 IO-APIC-level eth1
19: 68950 0 IO-APIC-level ide2, ide3
20: 6090 0 IO-APIC-level Intel ICH5
NMI: 0 0
LOC: 6938508 6938562
ERR: 0
MIS: 0
Would increasing the txqueuelen fix this issue? Or should I replace the
NIC to get rid of these messages?
Any help would be much appreciated.
Thanks,
Justin.
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