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Date:      Wed, 22 Mar 2000 12:39:42 -0800
From:      Mike Smith <msmith@freebsd.org>
To:        Matthew Dillon <dillon@apollo.backplane.com>
Cc:        Paul Richards <paul@originative.co.uk>, Richard Wendland <richard@netcraft.com>, Alfred Perlstein <bright@wintelcom.net>, Poul-Henning Kamp <phk@critter.freebsd.dk>, current@FreeBSD.ORG, fs@FreeBSD.ORG
Subject:   Re: FreeBSD random I/O performance issues 
Message-ID:  <200003222039.MAA00661@mass.cdrom.com>
In-Reply-To: Your message of "Tue, 21 Mar 2000 22:17:52 PST." <200003220617.WAA86154@apollo.backplane.com> 

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>     effects of the I/O being in-progress.  If a user program doesn't access
>     any of the information it recently wrote the whole mechanism winds up
>     operating asynchronously in the background.  If a user program does, 
>     then the write behind mechanism breaks down and you get a stall.

What makes no sense is that it should be perfectly ok to _read_ this 
information back.

-- 
\\ Give a man a fish, and you feed him for a day. \\  Mike Smith
\\ Tell him he should learn how to fish himself,  \\  msmith@freebsd.org
\\ and he'll hate you for a lifetime.             \\  msmith@cdrom.com




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