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Date:      Tue, 3 Oct 2006 22:24:53 -0700
From:      David G Lawrence <dg@dglawrence.com>
To:        Scott Long <scottl@samsco.org>
Cc:        freebsd-stable@freebsd.org, John Marshall <John.Marshall@riverwillow.com.au>
Subject:   Re: Watchdog Timeout - bge devices
Message-ID:  <20061004052453.GO17642@tnn.dglawrence.com>
In-Reply-To: <45234418.7000205@samsco.org>
References:  <9F7B653A50CF3D45A92C05401046239B0E0C27@rwsrv06.rw2.riverwillow.net.au> <45234418.7000205@samsco.org>

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> Very interesting data point.  I wonder if this accounts for some of the
> inconsistency in the reporting from others.  In any case, SCHED_ULE is
> still considered to be highly experimental.  Hopefully it will get some
> more attention in the near future to bring it closer to production
> quality.

   I'm not using SCHED_ULE on any of the machines that I'm seeing the
timeout problem with em and fxp devices. I suspect the problem has to do
with interrupt thread scheduling; maybe SCHED_ULE just somehow makes the
problem worse?

-DG

David G. Lawrence
President
Download Technologies, Inc. - http://www.downloadtech.com - (866) 399 8500
The FreeBSD Project - http://www.freebsd.org
Pave the road of life with opportunities.



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