Article View: comp.sys.next.sysadmin
Article #2098Re: Process <mach-task> with PID -1?
From: Paul Wood
Date: Mon, 14 Dec 1992 15:14
Date: Mon, 14 Dec 1992 15:14
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2628 bytes
Daniel Simmons (simmdan@ux1.isu.edu) wrote:
: Howdy!
:
: I'm a sysadmin at the Idaho State University Computer Center. In the
: computer center we do not have any Next machines, but the Math department
: here has a number of them (but no full time sysadmin).
:
: Today the professor who does the administration on the machines called
: me to say that he had discovered a number of processes on his file
: server and several workstations which appear to be sleeping (using no
: CPU or memory) but which cannot be killed.
:
: Here's a couple sample lines from the output of "ps -aux":
: USER PID %CPU %MEM VSIZE RSIZE TT STAT TIME COMMAND
: root -1 0.0 0.0 0K 0K ? S 0:00 <mach-task>
: root -1 0.0 0.0 0K 0K ? SW< 0:00 <mach-task>
: root -1 0.0 0.0 0K 0K ? SW 0:00 <mach-task>
: root -1 0.0 0.0 0K 0K ? S 0:04 <mach-task>
: root -1 0.0 0.0 0K 0K ? N 0:00 <mach-task>
: root -1 0.0 0.0 0K 0K ? ?W< 0:00 <mach-task>
: root -1 0.0 0.0 0K 0K ? S 0:00 <mach-task>
:
: Does anyone have a clue? I must confess to minimal knowledge of
: NeXTs. Is a PID of -1 normal for anything?
A CLUE? well certainly not NeXT. They say this isnt a problem.
Tho it has us rebooting on a regular basis to get rid of these
Zombie processes.
:
: I gather that yesterday at one point there were 300-400 of these
: processes on the file-server.
:
: Apparently, a new process is created anytime he telnets out to another
: machine. They may also appear under other circumstances, but that is
: the only one he has been able to reproduce consistently. When the
: system is rebooted, it begins with anywhere from 2-6 of these
: processes. More appear as time goes on.
:
: I'd appreciate any help you can give.
:
Wish I could help you on this one. Wish I could help us on this one.
--
-=( Paul Wood )=-
-=( pcwood@astro.ocis.temple.edu )=-
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Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!wupost!gumby!yale!yale.edu!jvnc.net!netnews.upenn.edu!cronkite.ocis.temple.edu!astro.ocis.temple.edu!pcwood From: pcwood@astro.ocis.temple.edu (Paul Wood) Newsgroups: comp.sys.next.sysadmin Subject: Re: Process <mach-task> with PID -1? Message-ID: <1992Dec14.151407.21287@cronkite.ocis.temple.edu> Date: 14 Dec 92 15:14:07 GMT References: <ByLLq7.9s0@ux1.isu.edu> Sender: news@cronkite.ocis.temple.edu (NetWork News (readnews)) Organization: Temple University Lines: 47 X-Newsreader: Tin 1.1 PL5