linux-kernel - Re: x86: 4kstacks default

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Date:	Mon, 28 Apr 2008 01:02:01 +0200
From:	Denys Vlasenko <vda.linux@...glemail.com>
To:	Jörn Engel <joern@...fs.org>
Cc:	David Chinner <dgc@....com>, Eric Sandeen <sandeen@...deen.net>,
	Adrian Bunk <bunk@...nel.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Shawn Bohrer <shawn.bohrer@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: x86: 4kstacks default

On Sunday 27 April 2008 21:27, Jörn Engel wrote:
> On Tue, 22 April 2008 11:28:19 +1000, David Chinner wrote:
> > On Mon, Apr 21, 2008 at 09:51:02PM +0200, Denys Vlasenko wrote:
> > 
> > > Why xfs code is said to be 5 times bigger than e.g. reiserfs?
> > > Does it have to be that big?
> > 
> > If we cut the bulkstat code out, the handle interface, the
> > preallocation, the journalled quota, the delayed allocation, all the
> > runtime validation, the shutdown code, the debug code, the tracing
> > code, etc, then we might get down to the same size reiser....
> 
> Just noticed this bit of FUD. Last time I did some static analysis on
> stack usage, reiserfs alone would blow away 3k, while xfs was somewhere
> below.

I'm sorry, but it's not what I said.
I didn't say reiserfs eats less stack. I don't know.
I said it is smaller.

reiserfs/*  821474 bytes
xfs/*      3019689 bytes
--
vda
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