Public bug reported:
Binary package hint: linux-source-2.6.20
More or less randomly, I'm seeing this in the kernel log:
...
[11994.316856] eth0: too many iterations (6) in nv_nic_irq.
[12020.522236] eth0: too many iterations (6) in nv_nic_irq.
[12179.254035] eth0: too many iterations (6) in nv_nic_irq.
[12180.435612] eth0: too many iterations (6) in nv_nic_irq.
[12194.004482] eth0: too many iterations (6) in nv_nic_irq.
[12310.463206] eth0: too many iterations (6) in nv_nic_irq.
[12310.475195] eth0: too many iterations (6) in nv_nic_irq.
[12431.413466] eth0: too many iterations (6) in nv_nic_irq.
...
I'm transferring (nfs+rsync) some large files (16GB data total) between
a client and server both running forcedeth.
I am in fact seeing this error on BOTH machines, and they are definitely
linked to the pauses. That would make sense if it's some kind of IRQ
issue. requiring a restart of the card.
The two machines are both amd64 dual-core, but they are otherwise
different. Completely different motherboards, extension cards, etc.
I can't say that I understand the message completely (what exactly is
iterated over?), but it could simply be that the forcedeth drivers have
too small a timeout, buffer, or somesuch other quantity. These timeouts
only seem to be happening at gigabit speeds, which tops out at about
50-60MB/s on my systems.
** Affects: linux-source-2.6.20 (Ubuntu)
Importance: Undecided
Status: New
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Random pauses when transferring data at gigabit speeds with forcedeth driver
https://bugs.launchpad.net/bugs/130075
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