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- 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
-
- 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 )=-
-