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From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org>
To: cronfy <cronfy@gmail.com>
References: <BANLkTik9fT0uZitSFonZ0_2ZtG6risBH=A@mail.gmail.com>
Date: Fri, 13 May 2011 13:00:54 -0400
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	(cronfy@gmail.com's message of "Wed, 11 May 2011 18:03:13 +0400")
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Cc: freebsd-questions <freebsd-questions@freebsd.org>
Subject: Re: how to diagnose server freeze with ddb?
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cronfy <cronfy@gmail.com> writes:

> I have a server that freezes under high load sometimes. It is on
> FreeBSD 7.3. It does not respond neither by network nor to keyboard.
> In the same time I can hit Ctrl-Alt-ESC and go to debugger - it works.
>
> What can I try to do in DDB to find out the reason of server freezing?

There are a lot of ddb(4) commands that show the state of the system,
and there isn't a lot to go on here.  "show locks", "show alllocks", 
"show intr", "show pcpu" are some of the commands that occur to me as
ones I would look at first.