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Date: Mon, 23 Jul 2007 20:00:48 +0200
From: Sam Ravnborg <sam@ravnborg.org>
To: Al Viro <viro@ftp.linux.org.uk>
Cc: Alan Modra <amodra@bigpond.net.au>, Roland McGrath <roland@redhat.com>,
       Paul Mackerras <paulus@samba.org>, David Miller <davem@davemloft.net>,
       Adrian Bunk <bunk@stusta.de>, linux-kernel@vger.kernel.org
Subject: Re: "build-id" changes break sparc64
Message-ID: <20070723180048.GA8268@uranus.ravnborg.org>
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On Mon, Jul 23, 2007 at 12:49:36PM +0100, Al Viro wrote:
> On Mon, Jul 23, 2007 at 06:55:59PM +0930, Alan Modra wrote:
> > On Mon, Jul 23, 2007 at 10:14:35AM +0200, Sam Ravnborg wrote:
> > > But I would still like to hear from Alan what the benefits are.
> > 
> > See http://sourceware.org/ml/binutils/2004-10/msg00178.html
> 
> What does _not_ doing intermediates do to memory footprint of ld(1)
> and time spent in there?

x86_64 defconfig

rm vmlinux*; time make vmlinux

Vanilla tree: ~7,7 sec
With single shot ld (Roland's patch): 8,3 secs

So as expected slower. As we link twice the cost is ~0,3 sec 
for a x86_64 defconfig link on my box.

So it should be beneficial to do it and Alan's link did not really
convince me for the kernel usage.
Al - do you have any input there?

	Sam