From owner-freebsd-current@FreeBSD.ORG Sat Jul 17 22:43:58 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C5EAF1065673 for ; Sat, 17 Jul 2010 22:43:58 +0000 (UTC) (envelope-from fabiokaminski@gmail.com) Received: from mail-qy0-f182.google.com (mail-qy0-f182.google.com [209.85.216.182]) by mx1.freebsd.org (Postfix) with ESMTP id 823548FC19 for ; Sat, 17 Jul 2010 22:43:58 +0000 (UTC) Received: by qyk7 with SMTP id 7so1625083qyk.13 for ; Sat, 17 Jul 2010 15:43:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:date:message-id :subject:from:to:content-type; bh=AnilCsgFn91YsauhX2GJ8BIxHCQXcaaVco2kcLjKT6I=; b=g+7n7vD+phV61pm8JPicuLB0WjdWB5hNUV4UxDErIGL2UtEkD+BcWZUe0S+sDdwHKu NA5mu7hEWMhwpbXeGNAC71KvzpM8w17S2hn9eYAdrrPA3fL1Kk/oM50uwyqWwlWyCbWR t5sy/Yq/l/YxWLVV2Hfpp6WgtiiNfC/ytkPPo= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=Wj7T2/DC/hG3Z5ktAEhdx3jA+qXGE2kxGK5BuJ774kAu1F1/7zoBl/DDvDdMu88X7E hTO2P3PFdC5Hp/tQ4CwhuvFxUOnjX5YvpyFtESLLWx939s3xpA0Wwtb/rx9h0d0OFa6N Vdzr6RFahK75PPJ7yfuRHfNJmUP1TK3CzGQbE= MIME-Version: 1.0 Received: by 10.224.80.2 with SMTP id r2mr2314341qak.380.1279405023792; Sat, 17 Jul 2010 15:17:03 -0700 (PDT) Received: by 10.229.228.199 with HTTP; Sat, 17 Jul 2010 15:17:03 -0700 (PDT) Date: Sat, 17 Jul 2010 19:17:03 -0300 Message-ID: From: Fabio Kaminski To: freebsd-current@freebsd.org X-Mailman-Approved-At: Sun, 18 Jul 2010 00:25:47 +0000 Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: sensitive emt64 performance degradation over amd64 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 17 Jul 2010 22:43:59 -0000 Hello list, im running two freebsd dists , each one in a diferent notebook.. i have a freebsd 8.1 rc2 running in amd64 with 2 cores 2MB mem.. (my old hp), and a freebsd 9-current running on a intel i3 (2 cores + 2 logical cores) with 4 MB ram.. and im was noting that the amd notebook was performing really fast compared to the i3.. even with for each core of i3 the clock been superior to the amd that i got here... i was looking to the kernel build and disable all the debug options from the 9 / kernel before the SMP option.. to see if it was the performance penalty cause... but that doesnt help to much... i didnt find any cpu flag to build the kernel specific to the intel arquitecture and leave the HAMMER option alone, knowing that emt64 and amd64 pretty the same thing... what could be happening... the biggest number of cores? .. or its a common thing... freebsd perform better on amd hardware... (note that i cant be too precise , since i didnt go any further with more tests... its more a subjective feel (boot time, general use.. etc)) Thanks, Fabio Kaminski