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Date:      Sat, 29 Aug 2009 18:00:37 +0200
From:      Pawel Jakub Dawidek <pjd@FreeBSD.org>
To:        "Mikhail (Plus Plus)" <m@plus-plus.su>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: need help with ZFS
Message-ID:  <20090829160037.GA1848@garage.freebsd.pl>
In-Reply-To: <4A969D20.40809@plus-plus.su>
References:  <4A927CB3.3040402@plus-plus.su> <4A964F4E.4080009@plus-plus.su> <4A9656CE.8020107@plus-plus.su> <367b2c980908270316n7a21673ek3a997573f2fadbb0@mail.gmail.com> <4A96731D.20406@plus-plus.su> <4A967680.2030205@plus-plus.su> <4A969D20.40809@plus-plus.su>

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On Thu, Aug 27, 2009 at 06:50:08PM +0400, Mikhail (Plus Plus) wrote:
> Mikhail (Plus Plus) wrote:
> >Hm, and just as I thought there's no COM port on that server, so I can't=
=20
> >redirect console output to another server. Is there any other way to=20
> >copy "bt" output? I can only think of making a phone camera picture of=
=20
> >the screen.
>=20
> Here's "bt" output I get after system panics on running
>=20
> bonnie++ -s17000 -d. -n128
>=20
> for about 10 minutes:
>=20
> http://omploader.org/vMjg5aQ/IMG_0057.jpg
[...]

I'm running your test on pretty low-end h/w (i386, 1GB of RAM, two cores)
and cannot reproduce the problem for few hours now. The only tuning I did
was to set vm.kmem_size to 1GB. You still need to do this very tuning even
on amd64.

Could you post output of:

	# sysctl vm.kmem_size
	# sysctl vm.kmem_size_max
	# sysctl vfs.zfs
	# zpool status
	# zpool list
	# zfs get all <your_test_fs>

And place /var/run/dmesg.boot somewhere?

--=20
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd@FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!

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