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Date:      Tue, 20 Jul 2004 07:47:30 +0200
From:      "Daniel Eriksson" <daniel_k_eriksson@telia.com>
To:        "'Scott Long'" <scottl@freebsd.org>, <freebsd-current@freebsd.org>
Subject:   RE: HEADS UP [Re: thread+preemption stability improvement]
Message-ID:  <!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAA0VcX9IoJqUaXPS8MjT1PdsKAAAAQAAAATsjutLtAZkGA1F/ZT0JiDwEAAAAA@telia.com>
In-Reply-To: <40FC3090.9060305@freebsd.org>

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Scott Long wrote:

> All,
> 
> Initial testing of this patch looks very promising.  For those that
> aren't comfortable with patching their sources by hand, note that it
> was committed to CVS a few hours ago and should be showing up on CVSup
> very shortly (rev 1.8 of sys/i386/i386/intr_machdep.c is what you want
> if you are running i386).  Please go out and test this as much as 
> possible so that we can determine if futher action is needed.

I must unfortunately report that this does not cure my problem with SATA
instability when preemption is turned on.

I have set aside some time on the server (normally a busy production-type
server) to try a few different configs (SHED_ULE instead of SHED_4BSD,
turning off apic, removing polling) to see if any of them will have any
impact.

/Daniel Eriksson




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