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Date:      Wed, 17 Jul 2002 07:02:02 -0700 (PDT)
From:      Stephane Queraud <squeraud@toteme.com>
To:        freebsd-gnats-submit@FreeBSD.org
Subject:   misc/40693: the system reboot alone with no reason
Message-ID:  <200207171402.g6HE22Sq032803@www.freebsd.org>

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>Number:         40693
>Category:       misc
>Synopsis:       the system reboot alone with no reason
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jul 17 07:10:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Stephane Queraud
>Release:        4.5-RELEASE , 4.5-RC1
>Organization:
Totem
>Environment:
FreeBSD http9 4.5-RELEASE FreeBSD 4.5-RELEASE #0: Fri Jun 28 14:25:15 CEST 2002 root@http9:/usr/src/sys/compile/HTTP9  i386

>Description:
FreeBSD reboots alone with no reasons.
nothing appears in the log files except in the last command:
reboot           ~                         Wed Jul 17 15:01

i have this problem with different computers, under freebsd 4.5-RELEASE and RC1. one with SCSI-RAID1 (adaptec 2110), 2 with IDE disk. p3-1Ghz and 512MB ram. installation: standard-recommanded + rebuild of the kernel with the following options
maxusers        512
options         NMBCLUSTERS=65536
options         IPFIREWALL
options         IPFIREWALL_VERBOSE
options         IPFIREWALL_DEFAULT_TO_ACCEPT

sysctl options i modified:
vfs.vmiodirenable=1
kern.ipc.maxsockbuf=2097152
kern.ipc.somaxconn=8192
kern.ipc.maxsockets=16424
net.inet.tcp.rfc1323=1
net.inet.tcp.delayed_ack=0
net.inet.tcp.sendspace=65535
net.inet.tcp.recvspace=65535
net.inet.udp.recvspace=65535
net.inet.udp.maxdgram=57344
net.inet.icmp.icmplim=300
net.local.stream.recvspace=65535
net.local.stream.sendspace=65535
kern.maxfiles=65536
kern.maxfilesperproc=32768

(the other computers with original sysctl parameters)

computers are running with apache 1.3.26, php 4.1.2 and mod_perl 1.27.
open ssh 3.4, ucd_snmp 4.2.5

i tried to remove the linix.ko module, but the computer rebooted again today. 
it doesn t seems to be because of the bandwith used on those computer (reboot occured with  1 or 5 mb/s of traffic, at different times of the day)

i don't know what to do to stop this, neither where to look because there is no logs...

thanks for the help

>How-To-Repeat:
i don't know...
>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted:

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