From owner-svn-src-all@freebsd.org Thu Mar 2 06:50:07 2017 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E0333CF57C2 for ; Thu, 2 Mar 2017 06:50:07 +0000 (UTC) (envelope-from ben.rubson@gmail.com) Received: from mail-wm0-x22e.google.com (mail-wm0-x22e.google.com [IPv6:2a00:1450:400c:c09::22e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 7567C20A for ; Thu, 2 Mar 2017 06:50:07 +0000 (UTC) (envelope-from ben.rubson@gmail.com) Received: by mail-wm0-x22e.google.com with SMTP id i17so850804wmf.0 for ; Wed, 01 Mar 2017 22:50:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date :content-transfer-encoding:message-id:references:to; bh=zPyxPhrNwJBxVrXGXYR/TejGC80Fjn5ey9cqzdAOI0o=; b=AakYFT3SCVb3/9P15dW1qia1VFaxQK2n/54LcY16WGYElBz2V0fAxutN55JYP+gs6Q PwTNYamweEXbgB1105GIIqUOLhxqjozNiqT+YSihMBIvE4eWiUPPFvRLAgrgIYySXRrg s9JE8mSX4+eqi0Co0m4ZdVaON5RzodwEE1Hc+LKVOnPU2dpB1V07zcWHwGNdiyzBS6q5 ZB269cqhirgshu+QbpeH9aANRJUAlDucm0ePrdH8fRo/RWArpE22LvmCgkU7P4SBr28u oxQd6t8mzbNBy6/vwr7kBpba5i+Zhavini7sT/+3dfb3qXViJVZSqqF/aOuoHKq+TT04 xk2A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date :content-transfer-encoding:message-id:references:to; bh=zPyxPhrNwJBxVrXGXYR/TejGC80Fjn5ey9cqzdAOI0o=; b=hG7BH7/OKfYY3Nq7nelOTJe2xqtqO1QuK8r4F8obiq0LzzkW+5DwoX4qrYy0/KOSsq fnyXRwHsZNArKOg9YUSxbQcFGYAXzaInTUVjp60NYyNNasAsOy+89VN0YBE7SvvZeUmX /Scy2XaCREy+lZ9KWPOq8QDo6AKQYbHymUVjfULRvFtydJVOJRd1qXYtDw7edAmaQMfJ zsN2HzRddutRzv4o9qiS3WIZd0uBVonnoQK4DCSq1Q8EX9VJFk55mi3uehIm+/35yOK6 zMpOEnWaS9pan9Tr460IjJ3oz/e6nSR1yitQdn6sTfuRcgFt/6tD0Q8Gdr1sx/fdDTKG KAHg== X-Gm-Message-State: AMke39nq9gWyvXYGYzQobpH/L8rULkbV6lwzmADtaStGaXTXxK3tmS9sfqZezcUXGPK9Nw== X-Received: by 10.28.100.196 with SMTP id y187mr6351912wmb.129.1488437404589; Wed, 01 Mar 2017 22:50:04 -0800 (PST) Received: from ben.home (LFbn-1-7159-4.w90-116.abo.wanadoo.fr. [90.116.90.4]) by smtp.gmail.com with ESMTPSA id z70sm9546572wrc.2.2017.03.01.22.50.03 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 01 Mar 2017 22:50:03 -0800 (PST) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Subject: Re: svn commit: r313006 - in head: sys/conf sys/libkern sys/libkern/x86 sys/sys tests/sys/kern From: Ben RUBSON In-Reply-To: <20170302162120.C8136@besplex.bde.org> Date: Thu, 2 Mar 2017 07:50:03 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: <988772E1-7521-4752-9DD7-E4DECA9AA558@gmail.com> References: <201701310326.v0V3QW30024375@repo.freebsd.org> <20170202184819.GP2092@kib.kiev.ua> <20170203062806.A2690@besplex.bde.org> <20170228121335.Q2733@besplex.bde.org> <20170302162120.C8136@besplex.bde.org> To: svn-src-all@freebsd.org X-Mailer: Apple Mail (2.3124) X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Mar 2017 06:50:08 -0000 > On 02 Mar 2017, at 06:27, Bruce Evans wrote: >=20 > On Wed, 1 Mar 2017, Conrad Meyer wrote: >=20 >> On my laptop (Intel(R) Core(TM) i5-3320M CPU =E2=80=94 Ivy Bridge) I = still see >> a little worse performance with this patch. Please excuse the ugly >> graphs, I don't have a better graphing tool set up at this time: >>=20 >> https://people.freebsd.org/~cem/crc32/sse42_bde.png >> https://people.freebsd.org/~cem/crc32/sse42_bde_log.png >=20 > Try doubling the loop sizes. There shouldn't be any significant = difference > above size 3*LONG unless LONG is too small. Apparently it is too = small for > older CPUs. Many thx Bruce & Conrad for your work on this ! My two cents, big chunks speed sounds (really) important as it will = impact data digest enabled iSCSI throughput. If needed, I could help with some benchmarks on my servers : Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz Thank you !