From: Robert Love <rml@tech9.net>
To: John Bradford <john@grabjohn.com>
Cc: Sean Neakums <sneakums@zork.net>, linux-kernel@vger.kernel.org
Subject: Re: Performance of ext3 on large systems
Date: 17 Feb 2003 10:56:14 -0500 [thread overview]
Message-ID: <1045497374.12615.1.camel@phantasy> (raw)
In-Reply-To: <200302171529.h1HFTVPk010325@darkstar.example.net>
On Mon, 2003-02-17 at 10:29, John Bradford wrote:
> > ext3 doesn't implement noatime!? Hurg...
noatime is implemented.
> Actually, it makes sense in a way - noatime only speeds up reads, not
> writes, (access time is always updated on a write), whereas a
> journaled filesystem is presumably intended to be tuned for write
> performance. So, for it's intended usage, not implementing noatime
> shouldn't be a huge problem, although it would be useful.
But updating the access time _is_ a write, even if its due to a read.
And using 'noatime' does help, and it is implemented. I guess Andrew's
statement was just misinterpreted, because this is what he said.
Robert Love
next prev parent reply other threads:[~2003-02-17 15:46 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-17 0:44 Martin J. Bligh
2003-02-17 1:18 ` Dave Hansen
2003-02-17 1:29 ` Andrew Morton
2003-02-17 15:20 ` Sean Neakums
2003-02-17 15:29 ` John Bradford
2003-02-17 15:56 ` Robert Love [this message]
2003-02-17 16:06 ` Sean Neakums
2003-02-17 16:22 ` John Bradford
2003-02-17 16:47 ` Matti Aarnio
2003-02-17 17:05 ` John Bradford
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