Date: Mon, 2 Jan 2006 12:04:04 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Kurt Wall <kwallnator@gmail.com>
Cc: linux-kernel@vger.kernel.org, Arjan van de Ven <arjan@infradead.org>
Subject: Re: Arjan's noinline Patch
Message-ID: <20060102110404.GA10996@elte.hu>
References: <20060101155710.GA5213@kurtwerks.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20060101155710.GA5213@kurtwerks.com>
User-Agent: Mutt/1.4.2.1i
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1040
Lines: 24


* Kurt Wall <kwallnator@gmail.com> wrote:

> After applying Arjan's noline patch (http://www.fenrus.org/noinlin), I 
> see almost a 10% reduction in the size of .text (against 2.6.15-rc6) 
> with no apparent errors and no reduction in functionality:

just to make sure: this was with -Os _also_ turned on, right? So what 
you measured was the effect of Arjan's patch plus -Os, combined, 
correct?

if yes you should measure the two effects in isolation, like the vmlinux 
numbers i posted. Every patch applied and every change to .config 
options must be measured separately, to get valid results. This doesnt 
invalidate your raw vmlinux measurements - you simply need to add a 
"Arjan's patch applied but no -Os turned on" number - but it does 
invalidate your conclusion quoted above.

	Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/