On Thu, 2 Aug 2007 11:57:21 +0300 (EEST)
Timo Jantunen <[email protected]> wrote:
> Heip!
>
> I have had few total hangs with 2.6.22.1 kernel. Everything suddenly
> freezes and nothing works (SysRq keys, pinging the machine from the
> network.) Neither syslog nor netconsole have any relevant messages. I'm 99%
> sure this didn't happen in 2.6.21.x kernels.
Try enabling the NMI watchdog? (boot with nmi_watchdog=1 on the kernel
command line) (or maybe nmi_watchdog=2).
otoh, I think NMI watchdog is always enabled on x86_64. But the counts
aren't going up. I forget what the story is there, apart from
lets-be-as-different-from-i386-as-we-can :(
> All hangs happened with relatively high network traffic (twice with mplayer
> using remote display, once with high network fs activity). I copied
> gigabytes of files over nfs but couldn't dupicatate the problem that way,
> but OTOH I have also watched hours of video without problems so the problem
> doesn't occur often. (In the mplayer case, the file I play is usually on
> remote nfs disk, too.)
>
> I started using mplayer from a text console and today I finally managed to
> catch first bit of information. The machine hanged like before (even SysRq
> keys don't print anything) but there was one console message:
>
> eth0: too many iterations (6) in nv_nic_irq.
>
> Looking at the sources, it seems when too much works happens in a single
> interrupt, the driver tries to disable device interrupts (and prints above
> message). It doesn't seem to be expecting the machine to hang afterwards.
>
> I guess the quick fix for me is to increase max_interrupt_work value so it
> doesn't get hit as easily.
>
Well. A Key piece of information would be: did that help?
>
> I have nForce3 board and Athlon 64 X2 CPU (but using 32-bit kernel). I'm
> using the built in ethernet with forcedeth driver. I also have ATI/AMD
> binary drivers loaded, and at least in some of the cases, VMware host
> drivers, too.
>
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