Re: xinetd takes over 90% CPU usage

From: Jason (gejun_1978_at_hotmail.com)
Date: 08/01/03 

Date: 1 Aug 2003 07:46:41 -0700

"Peter T. Breuer" <ptb@oboe.it.uc3m.es> wrote in message > > Following is the result of ltrace. Although it's quite long, most of
> > them are repeat. I use ...// to stand for the repeation of close(4)
> > to close(1022).
>
> Looks normal to me. But obviously something is pinging one of its ports
> repeatedly and what it starts is dying or something like that. Can you
> install tcplog or icmplog (sorry, I don't know the package) and see
> what's incoming? Or just turn on more logging in xinetd, somehow.

Thank Peter but could you please specify a little because I'm not
familiar with linux. What's the purpose of looking at the incoming
datagram by tcplog and icmplog? The xinetd takes much CPU usage the
moment it starts to run. I don't think it's busy handling incoming
packages at that early stage.

BTW, there is another machine with same hardware and same update from
redhat 8 to redhat 9. The output of ltrace on that machine is almost
the same with my machine.

> > The current verion of xinetd is xinetd-2.3.11-1.9.0. I have tried to
> > install some old version of xinetd but none of them works.
>
> [snip uninteresting ltrace of xinetd cycle]
>
> What do you mean "none of them works"?
Sorry for my unclearness. All the other versions take over 90% CPU
usage just as xinetd-2.3.11-1.9.0 does.

Thanks again :)

>
> Peter

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