Article View: comp.sys.next.sysadmin
Article #40Re: mach-task (grumble)
From: Matthew Dillon
Date: Thu, 29 Oct 1992 21:12
Date: Thu, 29 Oct 1992 21:12
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>In article <1992Oct29.035859.26265@cronkite.ocis.temple.edu> ray@astro.ocis.temple.edu (Ray Lauff) writes:
>I contacted NeXT yesterday about this problem. The person I spoke
>with kept me on hold for about 10 minutes and then told me that
>the processes were nothing to worry about and that I should just
>ignore them.
>
>Unfortunately, it's kinda hard to ignore the 300+ of them on
>my system and hard to ignore the slow system response time and
>hard to ignore the eventual system crash that results.
>
>Ray
>ray@astro.temple.edu
>
>S.A.McIntyre@durham.ac.uk wrote:
>>
>> from my process table:
>> root -1 0.0 0.0 0K 0K ? U 2:36 <mach-task>
>> root 2 0.0 0.8 1.45M 248K co S 0:08 (mach_init)
>> root -1 0.0 0.0 0K 0K ? U 0:09 <mach-task>
>> root -1 0.0 0.0 0K 0K ? S 0:00 <mach-task>
Hmmm... it sounds like one or more processes were unable to deallocate
resources on exit. This can happen, for example, if an exiting process
is blocked on a serial port. While I've never seen processes on my
own 3.0 machine do the above, I have seen processes 'freeze' where
even a KILL -9 doesn't take them out... due to hanging on a serial port
which has lost CTS. This is definitely a bug, when you kill a process
it isn't supposed to remain blocked on devices!
Your problem could be relate to something of that sort but I think only
a NeXT systems programmer would understand the problem... I doubt their
technical support is that sohpisticated so you may not get results from
NeXT unless you can find out *which* process is hanging!
It could be related to something your users do when they login or
logout.
-Matt
>> Scott
--
Matthew Dillon dillon@Overload.Berkeley.CA.US
1005 Apollo Way uunet.uu.net!overload!dillon
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USA Sandel-Avery Engineering (702)831-8000
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Path: arc1-ca.pugleaf.net!sparky!uunet!overload!dillon From: dillon@overload.Berkeley.CA.US (Matthew Dillon) Newsgroups: comp.sys.next.sysadmin Subject: Re: mach-task (grumble) Distribution: world Message-ID: <dillon.0qiw@overload.Berkeley.CA.US> References: <Bw61Ho.DGs@newcastle.ac.uk> <1992Oct29.035859.26265@cronkite.ocis.temple.edu> Date: 29 Oct 92 13:12:07 PST Organization: Not an Organization Lines: 48