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Date:      Tue, 29 May 2012 12:32:28 -0700
From:      Doug Barton <dougb@FreeBSD.org>
To:        Kees Jan Koster <kjkoster@gmail.com>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: FreeBSD 9.0 hangs on heavy I/O
Message-ID:  <4FC5244C.5090502@FreeBSD.org>
In-Reply-To: <BD5D6BB6-8CFF-456A-B03E-05454EB03AB6@gmail.com>
References:  <BD5D6BB6-8CFF-456A-B03E-05454EB03AB6@gmail.com>

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On 5/29/2012 12:26 PM, Kees Jan Koster wrote:
> I seem to have a problem where really heavy disk I/O is drowning my machine.

Assuming you're using the default scheduler (SCHED_ULE), try switching
to the 4BSD scheduler in your kernel config file and see if that helps.

Doug

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