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Date:      Tue, 14 Nov 1995 00:22:43 -0800
From:      David Greenman <davidg@Root.COM>
To:        Poul-Henning Kamp <phk@critter.tfs.com>
Cc:        current@freebsd.org
Message-ID:  <199511140822.AAA00179@corbin.Root.COM>
In-Reply-To: Your message of "Tue, 14 Nov 95 09:17:43 %2B0100." <173.816337063@critter.tfs.com> 

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>>    Attached is the patch to disable disk block sorting. It's interesting -
>> I've been doing some tests here with disksort disabled and I'm actually seein
>
>Another thing we should >seriously< consider is to make the update do 10%
>of the job every 3 seconds rather than 100% every 30 seconds.

   Been there, done that. It results in a large increase in the amount of disk
I/O due to the way that delayed writes work and file access times are updated.
"Fixing" this is very difficult and would require a rewrite of the code
involved.

-DG



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