linux-kernel - Re: [rfc] Ignore Fsync Calls in Laptop

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Date:	Mon, 30 May 2011 19:26:23 -0700 (PDT)
From:	david@...g.hm
To:	"Ted Ts'o" <tytso@....edu>
cc:	"D. Jansen" <d.g.jansen@...glemail.com>,
	Oliver Neukum <oneukum@...e.de>, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, Dave Chinner <david@...morbit.com>,
	njs@...ox.com, bart@...wel.tk
Subject: Re: [rfc] Ignore Fsync Calls in Laptop_Mode

On Mon, 30 May 2011, Ted Ts'o wrote:

> On Mon, May 30, 2011 at 11:24:03PM +0200, D. Jansen wrote:

> It's probably some application like firefox, or syslog.  (Syslog can be 
> fixed by prefixing syslog.conf entries with the '-' character so that 
> the files aren't sync'ed after every log update, for example.  Or not to 
> log as much in the first place.)

note that rsyslog (which is the default on new versions of just about 
every distro) changes this default so it no longer does a fsync for each 
log entry. It can be configured to be ultra paranoid if you need it, but 
by default it's not.

David Lang
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