From owner-freebsd-sparc64@FreeBSD.ORG  Thu Aug  7 00:43:41 2003
Return-Path: <owner-freebsd-sparc64@FreeBSD.ORG>
Delivered-To: freebsd-sparc64@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id AA77A37B401; Thu,  7 Aug 2003 00:43:41 -0700 (PDT)
Received: from obsecurity.dyndns.org
	(adsl-63-207-60-135.dsl.lsan03.pacbell.net [63.207.60.135])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id BF76443F75; Thu,  7 Aug 2003 00:43:40 -0700 (PDT)
	(envelope-from kris@obsecurity.org)
Received: from rot13.obsecurity.org (rot13.obsecurity.org [10.0.0.5])
	by obsecurity.dyndns.org (Postfix) with ESMTP
	id E15AC66B04; Thu,  7 Aug 2003 00:43:29 -0700 (PDT)
Received: by rot13.obsecurity.org (Postfix, from userid 1000)
	id BF40A67F; Thu,  7 Aug 2003 00:43:29 -0700 (PDT)
Date: Thu, 7 Aug 2003 00:43:29 -0700
From: Kris Kennaway <kris@obsecurity.org>
To: David O'Brien <obrien@freebsd.org>
Message-ID: <20030807074329.GA73001@rot13.obsecurity.org>
References: <20030807062536.GA68747@dragon.nuxi.com>
	<20030807063210.GA72779@rot13.obsecurity.org>
	<20030807064426.GA69176@dragon.nuxi.com>
Mime-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature"; boundary="Q68bSM7Ycu6FN28Q"
Content-Disposition: inline
In-Reply-To: <20030807064426.GA69176@dragon.nuxi.com>
User-Agent: Mutt/1.4.1i
cc: sparc64@freebsd.org
cc: Kris Kennaway <kris@obsecurity.org>
Subject: Re: ponderous 'make world' times post GCC 3.3...
X-BeenThere: freebsd-sparc64@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Porting FreeBSD to the Sparc <freebsd-sparc64.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-sparc64>,
	<mailto:freebsd-sparc64-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-sparc64>
List-Post: <mailto:freebsd-sparc64@freebsd.org>
List-Help: <mailto:freebsd-sparc64-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-sparc64>,
	<mailto:freebsd-sparc64-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 07 Aug 2003 07:43:42 -0000


--Q68bSM7Ycu6FN28Q
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Wed, Aug 06, 2003 at 11:44:26PM -0700, David O'Brien wrote:
> On Wed, Aug 06, 2003 at 11:32:10PM -0700, Kris Kennaway wrote:
> > On Wed, Aug 06, 2003 at 11:25:36PM -0700, David O'Brien wrote:
> > > Am I the only one that saw 'make world' go from almost 3 hours with G=
CC
> > > 3.2 to:
> >=20
> > Nope, that's just gcc 3.3.  Someone had a reference to some benchmarks
> > the gcc people did that showed progressive slowdowns over the course
> > of the gcc 3.x branch.
>=20
> It has been argued by Richard Henderson (urber GCC hacker) that 3.3 is no
> slower than 3.2.  I'm now thinking that this is a cache-size issue.  I
> wonder if GCC is blowing out my tiny 256KB cache.

I havent benchmarked make world myself recently, but the benchmark I
remember was compiling some reference version of gcc with different
gcc compiler versions (from 2.7.x to 3.4.x), and it demonstrated
something like a factor of 3 slowdown from gcc 3.2 to 3.3 on i386.
I'm paraphrasing from memory though, so I could be way off.

Kris

--Q68bSM7Ycu6FN28Q
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.2 (FreeBSD)

iD8DBQE/MgMhWry0BWjoQKURAm9nAJ9SnlA34joaQ5kbKBdZbifINxyG2wCeNnh1
sIYyYYGWcM7NrNKAuetTnOU=
=UMi+
-----END PGP SIGNATURE-----

--Q68bSM7Ycu6FN28Q--