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Date:      Wed, 04 Dec 2002 10:11:05 -0800
From:      Terry Lambert <tlambert2@mindspring.com>
To:        Varshavchick Alexander <alex@metrocom.ru>
Cc:        freebsd-questions@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG
Subject:   Re: maxusers and random system freezes
Message-ID:  <3DEE4539.238D0F6B@mindspring.com>
References:  <Pine.GSO.4.33.0212041552070.3419-100000@apache.metrocom.ru>

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Varshavchick Alexander wrote:
> 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:

[ ...  settings ... ]

With these settings, and that much physical RAM, you should set
your KVA space to 3G (the default is 2G); have you?

Most likely, you are running out of KVA space for mappings.

-- Terry

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