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- Path: sparky!uunet!usc!news.service.uci.edu!ucivax!sam
- From: sam@john-bigboote.ics.uci.edu (Sam Horrocks)
- Subject: Re: /sbin/init burns cpu time?
- Nntp-Posting-Host: john-bigboote.ics.uci.edu
- Message-ID: <2B1000F2.11231@ics.uci.edu>
- Newsgroups: comp.sys.sun.admin
- Organization: UC Irvine Department of ICS
- Keywords: Sun4/25 ELC SUNOS4.1.1B init
- Lines: 41
- Date: 22 Nov 92 21:51:46 GMT
- References: <1eot3oINN5ac@coli-gate.coli.uni-sb.de>
-
- In <1eot3oINN5ac@coli-gate.coli.uni-sb.de> hfi@coli.uni-sb.de (Hannes Fischer) writes:
-
- >Hi everyone,
-
- >i'm having a bit of trouble with a 4/25 (ELC).
- >After an uptime of about 8-10 hours, /sbin/init
- >starts to accumulate CPU time almoust in 'realtime'.
- >System utilization (vmstat) is at ~90%, with 0% idle
- >time left. /sbin/init is at ~95% CPU utilization.
- >There are usually some zombie processes lying around;
- >also, the getty on ttya doesn't get respawned. Network
- >services (rlogin, telnet, NFS) are still working. The
- >only recourse is to reboot the machine.
-
- >The machine has 24M RAM, 2*2G SCSI drives, running
- >SunOS4.1.1B (slightly tuned GENERIC), and provides
- >NFS service to 2 other SPARCs (don't ask why...),
- >and AppleShare fileservice (via CAP) to ~10-15
- >macintoshes.
-
- >Is there a possible hardware failure that would explain
- >this behavior? - I recently had to swap the system board,
- >and I didn't have any problems until then (or at least didn't
- >notice).
-
- >Needless to say, any help will be greatly appreciated :)
-
- Try doing a "trace -p 1". You'll probably see that init is constantly
- getting a SIGSEGV, recovering and then getting another SIGSEGV. I've
- seen this happen when making changes to ttytab and sending a SIGHUP to
- init to get it to re-read the file. Sometimes it'll pick up the
- changes and sometimes it'll just start SIGSEGV'ing.
-
- The only fix is to reboot. If you can't do that, renice it +19 until
- you can reboot.
-
- Sam
- --
- Sam Horrocks
- ICS Department, UC Irvine
- Email: sam@ics.uci.edu
-