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Date: Sun, 5 Apr 1998 14:06:29 +1000 (EST)
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Subject: bin/6216: syslog breaks then everything else slows to an almost stop
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>Number:         6216
>Category:       bin
>Synopsis:       syslog breaks then everything else slows to an almost stop
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Apr  4 20:10:01 PST 1998
>Last-Modified:
>Originator:     Andrew
>Organization:
UgH!
>Release:        FreeBSD 2.2.6-BETA i386
>Environment:

	2.2.6-BETA as of the 31st March, P133 with 64MB, fairly busy network wise...lots mail and web, also runs a DNS. Has a number of sleeping processes swapped out.

>Description:

	Not usre exactly but the symtoms were:

name server (bind8) wasnt responding. Went to investigate. Took ages to get
a ssh password prompt. Got in, had a look about. Disk access was normal (not
particularly high), plenty of swap space, plenty of disk space, 90% of network
bufers were in use.

named was running.

Tried to su but the su prompt would hang. Used sudo su instead. Looked at
a netstat. A number of apparently hung mail connections (big send and receive
queues (17K)). I looked at /var/log/messages...nothing had been logged for the
past 7 hours (overnight). I tried logger test. Didnt appear in the log file.

I tried to kill named to restart it. kill <named pid> didnt work. I tried
several times. It was in Ss state. kill -9 worked :-/. I fried named up again...
still no go (it ran ok but didnt log anything or work). I killed off the
apparently hung smtp sessions. I hupped syslogd. Tried logger again..still
didnt work. I killed syslogd and started it again.

One of my logger tests appeared in the log file. named startup messages
appeared, named started working, su started working...the box appeared to be
back to normal.

>How-To-Repeat:

	

>Fix:
	
	

>Audit-Trail:
>Unformatted:

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