From owner-freebsd-ppc@FreeBSD.ORG  Sun Sep 15 00:06:20 2013
Return-Path: <owner-freebsd-ppc@FreeBSD.ORG>
Delivered-To: freebsd-ppc@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTP id 4A916FCD;
 Sun, 15 Sep 2013 00:06:20 +0000 (UTC)
 (envelope-from adrian.chadd@gmail.com)
Received: from mail-wg0-x22e.google.com (mail-wg0-x22e.google.com
 [IPv6:2a00:1450:400c:c00::22e])
 (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits))
 (No client certificate requested)
 by mx1.freebsd.org (Postfix) with ESMTPS id 640212361;
 Sun, 15 Sep 2013 00:06:19 +0000 (UTC)
Received: by mail-wg0-f46.google.com with SMTP id k14so2414222wgh.25
 for <multiple recipients>; Sat, 14 Sep 2013 17:06:17 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=mime-version:sender:in-reply-to:references:date:message-id:subject
 :from:to:cc:content-type;
 bh=E0XxjlbLMKaX/CHLQC0PcQA3kTJ4rWjsReuwJ4hiMbQ=;
 b=zsm/YrxRWCPX7SOVlwgHwDfM6bIRNrty3aNInkXNzzd3qxrqBAQ5nQJnaEM50IqLvn
 ZV+dafOybgH2J08doWnjmwg48OuUl4tZ7w+bQMsHB77+4uXV8BkXSZLpP3skG0Mpzcux
 iSBjZOgkZKSyZlFX4p4d3adtIOBuFjHie7ZPghbeFZzrRWQGZgJb0eqgUCMecMyhIRLc
 F74AIAMI8p+6qsjNUkHNU6WYthQJM7xXPDdFRq4vCC/7FKuNpGaq2R7ssO2cAgbi8kwK
 utodiKuAhTv/dEvvDnPep/3Pq0SdR3X7hEYL5f+/P0jBgOZOCLBr6EQGmcaIbYo5o0s0
 uwYw==
MIME-Version: 1.0
X-Received: by 10.180.93.104 with SMTP id ct8mr8016029wib.0.1379203577684;
 Sat, 14 Sep 2013 17:06:17 -0700 (PDT)
Sender: adrian.chadd@gmail.com
Received: by 10.216.73.133 with HTTP; Sat, 14 Sep 2013 17:06:17 -0700 (PDT)
In-Reply-To: <CAF6rxgmiYxEEBtK2Rt0-PoKfu8MP6gow+-Ncx7Ma3LFzGd8e9w@mail.gmail.com>
References: <522CC7E0.9060508@freebsd.org> <5231D8A6.9080501@freebsd.org>
 <20130914133155.GA32845@alchemy.franken.de>
 <52346D71.4080407@freebsd.org>
 <1379173405.1197.7.camel@revolution.hippie.lan>
 <20130914172735.GX68682@funkthat.com>
 <1379181341.1197.26.camel@revolution.hippie.lan>
 <CAJ-Vmonk_cjc+wfCqsHdVESMvRMQTP4c2myK9jZr_+59GmWLQQ@mail.gmail.com>
 <CAF6rxgmiYxEEBtK2Rt0-PoKfu8MP6gow+-Ncx7Ma3LFzGd8e9w@mail.gmail.com>
Date: Sat, 14 Sep 2013 17:06:17 -0700
X-Google-Sender-Auth: 3ZjL3eBGhfUSr1AOW3nlcyZ-Clg
Message-ID: <CAJ-Vmo=_7oBjyrkAw=-mYzOgQr_GL0K1C+78u+mQRbxm6Nrjtw@mail.gmail.com>
Subject: Re: Patch for Cross-Reference Phandles
From: Adrian Chadd <adrian@freebsd.org>
To: Eitan Adler <lists@eitanadler.com>
Content-Type: text/plain; charset=ISO-8859-1
X-Content-Filtered-By: Mailman/MimeDel 2.1.14
Cc: freebsd-sparc64 <freebsd-sparc64@freebsd.org>,
 John-Mark Gurney <jmg@funkthat.com>,
 "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>,
 Ian Lepore <ian@freebsd.org>, FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>
X-BeenThere: freebsd-ppc@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Porting FreeBSD to the PowerPC <freebsd-ppc.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-ppc>,
 <mailto:freebsd-ppc-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-ppc>
List-Post: <mailto:freebsd-ppc@freebsd.org>
List-Help: <mailto:freebsd-ppc-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ppc>,
 <mailto:freebsd-ppc-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 15 Sep 2013 00:06:20 -0000

On 14 September 2013 17:04, Eitan Adler <lists@eitanadler.com> wrote:


> With an explicit zeroing:
>
>    text    data     bss     dec     hex filename
>    1572     484      16 2072     818 a.out
>
> Without:
>
>    text    data     bss     dec     hex filename
>    1572     484      16 2072     818 a.out
>

This is exactly the opposite of what I see with kernel code though. Eg,
kern_umtx.c and it's very large up-front allocated array. Same as the
upfront array of KTR entries for early boot tracing.

Try bumping it to something stupid like 65536 and retest?

Is this a gcc-4.2 versus clang difference?

Thanks,



-adrian