Re: Crashing when using make with option -j.

[Eli Zaretskii]

> Date: Thu, 18 Mar 2010 16:26:19 -0700
> From: tom honermann <address@hidden>
> Cc: address@hidden
> 
> 
> On 3/18/2010 2:22 PM, Thiago C. Santini wrote:
> > Yeah, that was my first thought when using -j, 8 processors each one 
> > with hyper-threading should be optimized with 16 jobs but when testing 
> > it I got better results with 32 jobs and that was working just fine 
> > till last week, so I just sticked to it =p
> >
> > Is there anyway to find out if it really was a kernel panic? Like a 
> > log or something? Any link to good tutorials about debugging a crash 
> > are welcomed aswell :-) I guessed it was a kernel crash because even 
> > the video signal was killed once(the screen wouldn't show anything at 
> > all).
> >
> > The real problem is that the machine crashed when there was more than 
> > one person working over ssh and I thought maybe someone was compiling 
> > at the same time as me and that made too many jobs.
> >
> You may be falling victim to the kernel OOM killer 
> (http://linux-mm.org/OOM_Killer)

If processes are killed by OOM Killer, there's a prominent message to
that effect in the system logs (/var/log/messages or some such).
Search for "oom" (IIRC) in the log.