On Fri, Jul 07 2006, Michael Kerrisk wrote:
> > > c) Occasionally the command line just hangs, producing no output.
> > > In this case I can't kill it with ^C or ^\. This is a
> > > hard-to-reproduce behaviour on my (x86) system, but I have
> > > seen it several times by now.
> >
> > aka local DoS. Please capture sysrq-T output next time.
>
> I don't have sysrq configured in the kernel that I'm testing at
> the moment (I'll build again with sysrq), but have just got
> the error again. For what it's worth, "ps l" says:
>
> F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
> 0 1000 7099 630 16 0 0 0 - D+ pts/30 0:00 [ktee]
Try ps -eo cmd,wchan, it should give you a little more at least. But
sysrq-t is the best, of course.
I'll see about reproducing locally.
--
Jens Axboe
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