Detecting runaway process

[ik]

Solved it. Thank you for your help

Ido

On Thu, Nov 17, 2011 at 16:25, Nadav Har'El <nyh at math.technion.ac.il> wrote:

> On Thu, Nov 17, 2011, ik wrote about "Re: Detecting runaway process":
> > Can't use gdb, it's a Ruby daemon (I didn't wrote it).
> > And strace gives different outputs on each crash :(
> >
> > I can't figure out what is wrong.
>
> The first step is to figure out if it exits because of a signal (e.g.
> SIGSEGV) or because it decides to exit on its own. Try to run it in a
> shell prompt, not in the background, and see if you see any message when
> it ends, and see what the exit status ($?) is at the end of the run.
>
> While it is running, see if its memory use is growing out of control
> (use ps or top to find this out). Perhaps it uses too much memory and
> gets killed by the oom-killer.
>
> See if you see any relevant messages in /var/log/messages.
>
> Try with strace, what is the last few lines? Is there an exit() at the
> end?
> If it appears it just exists on its own accord, maybe this is not a bug,
> but a feature? :-) Look at the code and try to find any place it might
> exit without any message. In certain languages (I don't know about Ruby)
> it is possible for uncought exceptions to kill the program without a
> message - can it be the cause here too?
>
> Anyway, good luck.  In general, it's NOT FUN to debug a program that
> someone else wrote... There is no magic bullet, just sweat.
>
>
> --
> Nadav Har'El                        |                  Thursday, Nov 17
> 2011,
> nyh at math.technion.ac.il
> |-----------------------------------------
> Phone +972-523-790466, ICQ 13349191 |Isn't Disney World a people trap
> operated
> http://nadav.harel.org.il           |by a mouse?
>
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