From owner-svn-src-all@freebsd.org Sat Jul 25 16:12:24 2015 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 6F75F9AA4F2 for ; Sat, 25 Jul 2015 16:12:24 +0000 (UTC) (envelope-from scott4long@yahoo.com) Received: from nm11-vm3.bullet.mail.gq1.yahoo.com (nm11-vm3.bullet.mail.gq1.yahoo.com [98.136.218.158]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 3925F948 for ; Sat, 25 Jul 2015 16:12:24 +0000 (UTC) (envelope-from scott4long@yahoo.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1437840356; bh=aOeAGqa0G8DEnCAVzgyBK8VUvb5ExuGQj73OasCCi2g=; h=Subject:From:In-Reply-To:Date:Cc:References:To:From:Subject; b=Elv1E6LMGBleJe3HMAu56zlRexxIphCWJ5jtD7TzpEYb9+T1rYhEr0G0ZMovjTvraQn9kY9PnBSMKvyT9Zn424AsODKY/sHD1LfTa/dzmHRqJZ71MBvI7tdefRQfbSrYEurxG9l/VJwZXQ7aWe0oLpnuge/tBUETlF4d9cHZADasM+DuyxgVICG0sCDzuUYY3NrfIOGPdCdNMT7LsNeUeAvrFX9HNSVwiAmHQM7Ys/9pbra6bcZhERcCikWYDjmEgS0h/aWd3S+uXr4H6SfwNvJB27P5gcaAsuoMJ3jdZ+8hQ6KXta8b9iiojAOSBvJkUvFjBLvoIVZw5kk9iJ5ZbQ== Received: from [98.137.12.55] by nm11.bullet.mail.gq1.yahoo.com with NNFMP; 25 Jul 2015 16:05:56 -0000 Received: from [98.136.164.76] by tm15.bullet.mail.gq1.yahoo.com with NNFMP; 25 Jul 2015 16:05:56 -0000 Received: from [127.0.0.1] by smtp238.mail.gq1.yahoo.com with NNFMP; 25 Jul 2015 16:05:56 -0000 X-Yahoo-Newman-Id: 615341.60584.bm@smtp238.mail.gq1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: mKfL5K8VM1nDfK.BZ9drkBlDI0oweffm5qHy5BYXLyHBYRZ UnPs5Um53NXqBPaQd1tu5Mu11KEBeX56Owxu0LEeeR1OSnKyM3Eia7I1VSAF njs6FS_XH2SkwOnGr6raXLdYKsNG7KpeR2xEs76adLVFENi5LkcNj8iVaXkH 3d9hybs6qBCEdl4a0xjqvN4rd_sHtuZYjI57hd7v75ootNKsJQHRyhPtvNhW Y_oKIUAoiELLBfUJzHynijEhIqXK9Sz.PmtcJVXJgMpcwE82zuBzURJ65zUg 3wwAs9GaQWXFM2Ocg5bKX2KxPo_tQQFWbcd_fGaepHiATKIkcYv.NJJUHknN n_2s7swzbHjDWdh2d2RxRKBrWr17mFWq7ASZ2joKKF_rMMCHrydgeOthVXW2 Hy5FQzUvUHJPZ5PN2mj.YtjUudUBk3MYmxxWwMDaEGYv9k2axtQEOf40z.C6 ab2OipsGaQ.j5DCJIY.i3UGeca5xEKxSdaPFN1Uqg6e8XNfDF6AKLcbsm5jO 5RfOTKDREbldPwSaLSlhRQ7XhpZhhEEszBW0x..WD2g-- X-Yahoo-SMTP: clhABp.swBB7fs.LwIJpv3jkWgo2NU8- Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2098\)) Subject: Re: svn commit: r284959 - in head: . share/man/man4 share/man/man9 sys/conf sys/dev/glxsb sys/dev/hifn sys/dev/random sys/dev/rndtest sys/dev/safe sys/dev/syscons sys/dev/ubsec sys/dev/virtio/random sy... From: Scott Long In-Reply-To: Date: Sat, 25 Jul 2015 10:05:54 -0600 Cc: src-committers , svn-src-all@freebsd.org, svn-src-head@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: <109674C8-0584-4347-9DBE-0401B9BDC514@yahoo.com> References: <201506301700.t5UH0jPq001498@svn.freebsd.org> <20150724012519.GE78154@funkthat.com> <96EA33AB-7325-4DD2-83F4-B4FAF6F47CB5@yahoo.com> To: Mark R V Murray X-Mailer: Apple Mail (2.2098) X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.20 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: Sat, 25 Jul 2015 16:12:24 -0000 > On Jul 25, 2015, at 2:10 AM, Mark R V Murray = wrote: >=20 >=20 >> On 25 Jul 2015, at 06:06, Scott Long wrote: >>=20 >>> I=E2=80=99m working on a premise of =E2=80=9Ctools, not policy=E2=80=9D= . I=E2=80=99d like there to be >>> enough harvesting points for the box owner to get the warm fuzzies. >>> If they choose to use less, fine by me. >>>=20 >>=20 >> Sure, and that=E2=80=99s not an unreasonable goal, but the devil is = in the details. >=20 > Yes, indeed! >=20 >> It=E2=80=99s an unfortunate fact of modern CPU architecture that even = something >> as simple and innocent as a run-time control that checks a variable = can >> cause significant performance problems, thanks to the penalty of = cache >> misses and bus contention between lots of CPU cores. Maybe these >> =E2=80=9Cextended=E2=80=9D collection points should be controlled = with a compile-time >> option? >=20 > They can. I=E2=80=99ve coded it already, but not tested it properly, = and will > commit in a week or two. :-) What you posted this morning for review is a great start. Thanks for = the productive conversation on this. Scott