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From: Rashid  Karimov <rashid@rk.ios.com>
Message-Id: <199605291750.NAA23605@rk.ios.com>
Subject: Re: Breaking ffs - speed enhancement?
To: davidg@Root.COM
Date: Wed, 29 May 1996 13:50:04 -0400 (EDT)
Cc: jgreco@solaria.sol.net, hackers@freebsd.org
In-Reply-To: <199605290911.CAA01059@Root.COM> from "David Greenman" at May 29, 96 02:11:06 am
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		Hi there folx,

> 
> >Intended goal: on a busy news server with a hundred articles per second
> >going out the door, I felt that it might not be reasonable to try to write
> >the st_atime changes back out to the disk.  Basically, no one gives a rip,
> >and that's a lotta writes that I don't have time or disk bandwidth to do.
> ...
> >Am I just totally whacked out, or is this perhaps a reasonable thing to do,
> >given that I'd really rather not have to absorb the extra write activity on
> >the filesystems...  does anybody else perceive any value along these lines
> >of thought?
> 
> 
>    I added an option "noatime" to mount/fstab and implemented a special
> per-mount flag for this in the kernel. I was only interested in disabling
> the access time; I wanted the inode change time and modify times to still
> work correctly. My application, of course, was wcarchive - a machine with
> millions of files that spends about 1/3-1/2 of all of it's disk I/O just
> updating the access times in the inodes.
> 
> -DG
> 
> David Greenman

	David, could you submit those patches ? May be we can even add
	this as an OPTION to the kernel config file? 


	Rashid