Linux-kernel mailing list archive 2000-26,: Re: OOM?

# Re: OOM?

Marcelo Tosatti (marcelo@conectiva.com.br)
Mon, 26 Jun 2000 11:49:58 -0300 (BRST)

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On Mon, 26 Jun 2000, Marcelo Tosatti wrote:

>
>
> On Mon, 26 Jun 2000, Jason Gunthorpe wrote:
>
> >
> > Hi all,
> >
> > Are there any known bugs with the 2.14->16 OOM handlers? I have just had
> > another box (stock 2.2.16) blow itself away by running out of memory :<
> >
> > What happens is some script/program has a bug and manages to consume
> > memory in a loop, fairly slowly over a time. Today it was a perl script, a
> > few months ago it was wml and I think I've seen rsync+ftpds do it too..
> >
> > The apparent end result is either the box just seizes up, still
> > responding to pings and what not, but unable to do anything (even at the
> > console). There are no log messages, I presume klogd was blown away by the
> > OOM handler before it could log anything?
> >
> > [Aside: wml has OOM'd the box twice about 24 hours apart a few months
> > ago. When this happened the first time had no log messages, the second
> > time there was a few VM: killing foo messages - hence my theory that klogd
> > dies early on..]
> >
> > Through carefull observation I have confirmed that two of these instances
> > are OOM, the other has not happened again.
> >
> > The third instance, that I think is simply lots of ftpd+rsyncs's was very
> > strange, all services on the box were killed, cron, logging, inetd, ssh,
> > etc - but apache continued to run. I could browse the files it was serving
> > no problem - this is why I suspect it was OOM, but cannot be sure.
>
> Could you please try the same workload with 2.2.17pre7?
>

Oh, another thing is, are you sure you have free swap space available for
you workload?

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