From owner-freebsd-toolchain@FreeBSD.ORG Sun Sep 16 05:25:52 2012 Return-Path: Delivered-To: freebsd-toolchain@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B71261065670; Sun, 16 Sep 2012 05:25:52 +0000 (UTC) (envelope-from yanegomi@gmail.com) Received: from mail-ob0-f182.google.com (mail-ob0-f182.google.com [209.85.214.182]) by mx1.freebsd.org (Postfix) with ESMTP id 65A208FC19; Sun, 16 Sep 2012 05:25:52 +0000 (UTC) Received: by obbun3 with SMTP id un3so9813461obb.13 for ; Sat, 15 Sep 2012 22:25:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=Krm79UcjFbi46Th0F+uubmP9hadLLVQr1p7zAb51t+M=; b=0/C2Vx5xgpN+IcmWDPy6or3O3XI4GCJQQobLYOJxrE+PJeM8tHrQGTYasxyooG+dML AJsipms1SX620AfmsKLKaStywUfgRY3JseKiv/atsdE6IZPR8XT5E1WzKDp1aMTYHJsc 1scsDYP88rdSBvo6kkol6+j4Ib6zzRdwziBnZ4rUtmmLkoaxiy5Tq25C8upFEnMAyJiL cE0oO8biIdt8+VmCS7IYotWjX44tzMnfveCsvTbPjh2nHvidNpPDTBi8tNA9543cHa/s wl65rVyWZY2RIqb4c0u9jzI4EKU3Zx9I8hQpQWWxl2zsLNcdU8jB5JerbSooK2Za2F5B 4kVw== MIME-Version: 1.0 Received: by 10.60.20.69 with SMTP id l5mr8394651oee.114.1347773151643; Sat, 15 Sep 2012 22:25:51 -0700 (PDT) Received: by 10.76.142.201 with HTTP; Sat, 15 Sep 2012 22:25:51 -0700 (PDT) In-Reply-To: <20120916051909.GI37286@deviant.kiev.zoral.com.ua> References: <50550285.4040203@andric.com> <20120916051909.GI37286@deviant.kiev.zoral.com.ua> Date: Sat, 15 Sep 2012 22:25:51 -0700 Message-ID: From: Garrett Cooper To: Konstantin Belousov Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-current@freebsd.org, freebsd-toolchain@freebsd.org Subject: Re: Compiler performance tests on FreeBSD 10.0-CURRENT X-BeenThere: freebsd-toolchain@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Maintenance of FreeBSD's integrated toolchain List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 Sep 2012 05:25:52 -0000 On Sat, Sep 15, 2012 at 10:19 PM, Konstantin Belousov wrote: > On Sun, Sep 16, 2012 at 12:34:45AM +0200, Dimitry Andric wrote: >> Hi all, >> >> By request, I performed a series of kernel performance tests on FreeBSD >> 10.0-CURRENT, particularly comparing the runtime performance of GENERIC >> kernels compiled by gcc 4.2.1 and by clang 3.2. >> >> The attached text file[1] contains more information about the tests, >> some semi-cooked performance data, and my conclusions. Any errors and >> omissions are also my fault, so if you notice them, please let me know. >> >> The executive summary: GENERIC kernels compiled with clang 3.2 are >> slightly faster than those compiled by gcc 4.2.1, though the difference >> will not very noticeable in practice. >> >> Last but not least, thanks to Gavin Atkinson for providing the required >> hardware. > > Thank you very much for doing this. > > I tried to map the CPUID into more human-friendly family moniker, and it > seems that these are Pentium-4 class CPUs. Am I right ? > > If yes, could you, please, rerun the tests on anything more recent than > Core2, i.e. any Core i7-whatever class of Xeons ? If you can provide the tests, I can rerun it on some Nehalem class workstations I have access to. I unfortunately don't have access to SNB/Romley hardware yet. Thanks, -Garrett