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Date:      Thu, 20 Nov 1997 21:41:10 -0500 (EST)
From:      "John S. Dyson" <toor@dyson.iquest.net>
To:        mrcpu@cdsnet.net (Jaye Mathisen)
Cc:        toor@dyson.iquest.net, hackers@freebsd.org
Subject:   Re: Nope, didn't fix it.Re: Serious performance issue with 2.2.5-RELEASE
Message-ID:  <199711210241.VAA00867@dyson.iquest.net>
In-Reply-To: <Pine.NEB.3.95.971120170004.23652a-100000@mail.cdsnet.net> from Jaye Mathisen at "Nov 20, 97 05:05:49 pm"

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Jaye Mathisen said:
> 
> OK, I handpatched the source, built a new kernel, and fired it up again.
> 
> If anything, it's worse than before, hanging up within seconds of
> rebooting.
> 
Hmmmm...  The original modification of the code was a mistake.  getnewbuf
is supposed to return if it blocks.
>
> I'm dropping back to the previous version for now, but this pretty well
> kills 2.2.5 for me for usability.
> 
Ouch!  At least you have a plan B.

>
> I notice now that a lot of processes seem to be in vmwait, when they
> didn't used to show it.
> 
> Heck, I just had a la spike of 480.  Machine kept running, but it was
> unable to serve files for 2-3 minutes.
> 
Whoa!!!  Bring in the vm_page fix from RELENG_2_2 !!!  It could be
another manifestation of the page queue management bug!!!

John



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