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Date:      Wed, 4 Dec 2002 16:06:36 +0300 (MSK)
From:      Varshavchick Alexander <alex@metrocom.ru>
To:        <freebsd-questions@FreeBSD.ORG>
Cc:        <freebsd-hackers@FreeBSD.ORG>
Subject:   maxusers and random system freezes
Message-ID:  <Pine.GSO.4.33.0212041552070.3419-100000@apache.metrocom.ru>

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Hi people,

Can it be so that kernel maxusers=768 value being more than 512 leads to
spontaneous system freezes which can take up to several hours when the
system is just sleeping (only replying to ping) and doing nothing else,
not allowing to telnet or anything. The system is 4.5-STABLE with much RAM
(4 Gb) and the box has a heavy enough traffic so a bunch of other kernel
options have been increased:

options         SHMMAXPGS=262144        #max amount of shared mem. pages
options         SHMMNI=256              #max number of shared memory ident if.
options         SHMSEG=256              #max shared mem.segs per process
options         MSGSEG=32767            #max num. of mes.segments in system
options         MSGSSZ=32               #size of msg-seg. MUST be power of 2
options         MSGMNB=65535            #max char. per message queue
options         MSGTQL=2046             #max amount of msgs in system
options         SEMMNU=256              #number of semaphore UNDO structures
options         SEMMNS=1024             #number of semaphores in system
options         SEMMNI=520              #number of semaphore indentifiers
options         SEMUME=100              #number of UNDO keys
options         SEMMSL=256              # max number of semaphores per id
options         SEMOPM=256              # max number of operations per semop call

Or what else can be causing such system crashes? Any help is greatly
appreciated!

Regards

----
Alexander Varshavchick, Metrocom Joint Stock Company
Phone: (812)118-3322, 118-3115(fax)





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