From: Arjan van de Ven <arjan@infradead.org>
To: Vlad <vladc6@yahoo.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Noatime vs relatime
Date: Fri, 10 Aug 2007 07:47:37 -0700 [thread overview]
Message-ID: <1186757257.2670.0.camel@laptopd505.fenrus.org> (raw)
In-Reply-To: <233939.75965.qm@web54403.mail.yahoo.com>
On Fri, 2007-08-10 at 07:26 -0700, Vlad wrote:
> Linus Torvalds wrote:
> Relatime seems to be wasteful of both IO resources _and_ CPU cycles.
> Instead of performing a single IO operation (as atime does), relatime
> performs at least three IO operations and three CPU-dependent
> operations:
>
> 1) a read IO operation to find out the old atime
> 2) a read IO operation to find out the old ctime
> 3) a read IO operation to find out the old mtime
you've mistaken the concept of inode-in-memory... there is no IO
involved in any of these.
next prev parent reply other threads:[~2007-08-10 14:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-10 14:26 Vlad
2007-08-10 14:44 ` Xavier Bestel
2007-08-10 14:47 ` Arjan van de Ven [this message]
2007-08-10 14:51 ` Michael Poole
2007-08-10 15:10 ` Matti Aarnio
2007-08-10 22:55 ` Rene Herman
2007-08-10 19:29 ` Bill Davidsen
2007-08-10 16:32 pointman
[not found] <8QDOX-78C-15@gated-at.bofh.it>
[not found] ` <8QErs-8dz-1@gated-at.bofh.it>
[not found] ` <8QLCI-2zy-15@gated-at.bofh.it>
2007-08-11 8:33 ` Bodo Eggert
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