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Date:      Tue, 3 Feb 2009 04:19:33 -0800
From:      Sergey S <ad.sergey@gmail.com>
To:        Mikolaj Golub <to.my.trociny@gmail.com>
Cc:        remko@freebsd.org, freebsd-bugs@freebsd.org
Subject:   Re: misc/131290: How to completely freeze FreeBSD 7.1 under a  non-privileged user
Message-ID:  <ab09a9970902030419j92add19y837afc7aa871aabb@mail.gmail.com>
In-Reply-To: <817i47oibn.fsf@zhuzha.ua1>
References:  <200902021314.n12DEwd3098744@freefall.freebsd.org> <ab09a9970902021213h6e58a1b4o56bcfabb2e5da3e6@mail.gmail.com> <817i47oibn.fsf@zhuzha.ua1>

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Help.

Thanks for your answer.

> I have tried your scripts and have not managed to reproduce the hang, even
> running the loop script without sleep.

It's very strange, because the bug is 100% reprodusable to me (on two
separate computers) :(

> http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-deadlocks.html

Thanks for your suggestion. I hope it will help.

> But I would recommend you to start from simpler techniques, e.g. running in
> parallel top and other system utilities and writing the output to the file for
> further investigation. Something like this:
>
> top -b -s1 -S -d1000 1000 > top.output &
> ./gistfile1.sh

I've done it. gzipped top.output is attached to this letter.

--
Sergey

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