From owner-svn-src-all@freebsd.org Fri Dec 2 17:15:17 2016 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 BDB15C63E9A for ; Fri, 2 Dec 2016 17:15:17 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: from mail-io0-x22b.google.com (mail-io0-x22b.google.com [IPv6:2607:f8b0:4001:c06::22b]) (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 7AC52322 for ; Fri, 2 Dec 2016 17:15:17 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: by mail-io0-x22b.google.com with SMTP id a124so492511414ioe.2 for ; Fri, 02 Dec 2016 09:15:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20150623.gappssmtp.com; s=20150623; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=nOxnbYDUZ2tSSrnvXkah79znpHH2W8gWCBOKXu8xtwM=; b=gKPxSLXGafZkCnLSh/hLr7emuM7t9GG5lKGNUu4YpRAkAVWLo882ZaDeSjYOJak0t0 5CM+Dq5LAFVeSJu4ou8uvxJ9HdmZM7xVs5i9rhYMoLgGq2jgrXRWzcbjLm/yW85/W2AU ahOofg+L0ozy/Jssf12tFC7i1t9et9eohvyieHHbVZC19pSjjHXXGI9m7e1AoNBKz1Ew afKAlYFWajkNfgfUaJPA8k3ZM0VRpjlpqJherZaY3tIXFxgdV1s06+h1BSgUujm4JOsm OfZUrB984PrlaElpGWzs6QqtLMFJjfyRbLRTIdVplfLXXteu3O/st5fBjb7BZV1wg/b7 vLVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=nOxnbYDUZ2tSSrnvXkah79znpHH2W8gWCBOKXu8xtwM=; b=ZlxXkdbAhwevA/zDwHLuiRRQ8dgZJacz0qTCjbxGf/x4ViRqEQBPDP9dZt19bd9EAd G8RmiSQYo/36HLihB8xb/JB5SA7o0ESCFpGjjm8avlKeF2x+IqX6Ped5/SFyREoJ8hxR prRGUDmuVRLR2NT0ETCnZSbMtAKJk6Goj4l75qZK3SBIerGPgyxNdd3kt3Xypm5THttz rTVZ6e6yUodgKistUaFoN+W4RIVavajrwYft7VSHbsJh68zplp1BFWQ7KjBfE2PdaVJG 22vSz5O1X3zgsOky2LhfLb5q3FZJ7bQMVyUYSnCnmzjIIfcJMu6kiWGKzMcYSat9L4Yw 2vKQ== X-Gm-Message-State: AKaTC03PAGw1Uv8mkbjJ6uB5PNZmSsKOU5C8OAo0FXDqwyJ8D9CjwAdguxf9McwAWJQOCw2GcJXTax7yqViJxw== X-Received: by 10.36.200.68 with SMTP id w65mr3583771itf.85.1480698916574; Fri, 02 Dec 2016 09:15:16 -0800 (PST) MIME-Version: 1.0 Sender: wlosh@bsdimp.com Received: by 10.79.31.199 with HTTP; Fri, 2 Dec 2016 09:15:15 -0800 (PST) X-Originating-IP: [69.53.245.200] In-Reply-To: <3180246.4fqia12Gik@ralph.baldwin.cx> References: <201612010435.uB14Zh21020050@repo.freebsd.org> <20161201164807.GE27291@strugglingcoder.info> <3180246.4fqia12Gik@ralph.baldwin.cx> From: Warner Losh Date: Fri, 2 Dec 2016 10:15:15 -0700 X-Google-Sender-Auth: Z1PQwPRAM0rbKrujnX68vLdAYgM Message-ID: Subject: Re: svn commit: r309351 - head/etc/defaults To: John Baldwin Cc: hiren panchasara , Warner Losh , src-committers , "svn-src-all@freebsd.org" , "svn-src-head@freebsd.org" Content-Type: text/plain; charset=UTF-8 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: Fri, 02 Dec 2016 17:15:17 -0000 On Fri, Dec 2, 2016 at 9:18 AM, John Baldwin wrote: > On Thursday, December 01, 2016 02:41:41 PM Warner Losh wrote: >> On Thu, Dec 1, 2016 at 9:48 AM, hiren panchasara >> wrote: >> > On 12/01/16 at 04:35P, Warner Losh wrote: >> >> Author: imp >> >> Date: Thu Dec 1 04:35:43 2016 >> >> New Revision: 309351 >> >> URL: https://svnweb.freebsd.org/changeset/base/309351 >> >> >> >> Log: >> >> Revert the 'performance' setting to 'NONE' from C2. >> > >> > Just a note that this commit reverts r282110. >> >> Yea, it's good for laptops, bad for servers. At least there's some >> Intel CPUs that this causes corruption with USB. That's being sorted >> out, but until that's done we need to fail more safe for our primary >> market. > > It's also good for some servers as you need some cores in C-states > to get the maximum Turbo Boost on other cores (though that may have > been more true for earlier generations of i7 CPUs than more recent > generations). Once the corruption issues are solved, we can and should put this back. Adrian is working on that. Warner