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Best regards, Joe Email: songedit@tom.com From owner-freebsd-arch@FreeBSD.ORG Wed May 13 01:32:17 2015 Return-Path: Delivered-To: freebsd-arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id BCEEA84F for ; Wed, 13 May 2015 01:32:17 +0000 (UTC) Received: from mail-ig0-x22a.google.com (mail-ig0-x22a.google.com [IPv6:2607:f8b0:4001:c05::22a]) (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 90899136A for ; Wed, 13 May 2015 01:32:17 +0000 (UTC) Received: by igbpi8 with SMTP id pi8so125826798igb.1 for ; Tue, 12 May 2015 18:32:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:date:message-id:subject:from:to:content-type; bh=VSY5zkUsukvXOJjj8kSM3hS+YwZ5Zqq4eRNQ4kNL37Q=; b=pP2g+tMnbLKbC74Vcbj6P6otxibutkcok+/9zNkARWfDJVAxqf0OfJcIV8Xw8LIhMF PYi8AI+tuxq+cWCQ0JnCalQdBvrPty+2Gf/Gaf50kv1cNROPUQRAb+85fX94rQwbqo+/ JSIuvLTgUun1VEdrikuzmOJ2wWzNRFzJWc5RHsvTcHCpX9E3EJhTrNxOdsDFqkuVC374 VC6tDE/qGz6X99TznUZrTAl01UBlifatdRExqFDizlSC2YzEIzM+mc0lqoHiYEDKIUz4 wL2imFXR16ymH9nuij3RgV1SccD/8wrYkdrhFmMRHoQJYyk32PkCIxtw5u1pbn8EbaWx MFbg== MIME-Version: 1.0 X-Received: by 10.50.73.198 with SMTP id n6mr24938300igv.32.1431480737009; Tue, 12 May 2015 18:32:17 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.36.38.133 with HTTP; Tue, 12 May 2015 18:32:16 -0700 (PDT) Date: Tue, 12 May 2015 18:32:16 -0700 X-Google-Sender-Auth: vIFcnSngB3lRI2qPrUtMWXUlHYg Message-ID: Subject: CFT/CFR: NUMA policy branch From: Adrian Chadd To: "freebsd-arch@freebsd.org" Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 May 2015 01:32:17 -0000 Hi, I'm at the point now where I think this part is done and I'd like to get it more formally reviewed and ready for commit into -HEAD. Here's the branch: https://github.com/freebsd/freebsd/compare/master...erikarn:local/adrian_numa_policy * added syscalls; * added vm domain policy and iterators; * per-process, per-thread and global system policy; * added numactl - a tool to manipulate, fetch and start processes w/ policies;; * added manpages for everything above. It's working fine for a handful of people who have been testing it. I'd like to get some more wider testing and reporting. I'd like to wrap this up in a formal phabricator review in the next few days and kick start it along. Thanks! -adrian From owner-freebsd-arch@FreeBSD.ORG Sat May 16 00:24:45 2015 Return-Path: Delivered-To: freebsd-arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 7FC6C636 for ; Sat, 16 May 2015 00:24:45 +0000 (UTC) Received: from mail.dawidek.net (garage.dawidek.net [91.121.88.72]) by mx1.freebsd.org (Postfix) with ESMTP id 442851A12 for ; Sat, 16 May 2015 00:24:44 +0000 (UTC) Received: from localhost (c-24-4-217-69.hsd1.ca.comcast.net [24.4.217.69]) by mail.dawidek.net (Postfix) with ESMTPSA id 43C8E4F7; Sat, 16 May 2015 02:24:37 +0200 (CEST) Date: Sat, 16 May 2015 02:24:41 +0200 From: Pawel Jakub Dawidek To: Warner Losh Cc: John-Mark Gurney , Konstantin Belousov , Harrison Grundy , freebsd-arch@freebsd.org Subject: Re: locks and kernel randomness... Message-ID: <20150516002440.GB16906@garage.freebsd.pl> References: <20150224012026.GY46794@funkthat.com> <20150224015721.GT74514@kib.kiev.ua> <54EBDC1C.3060007@astrodoggroup.com> <20150224024250.GV74514@kib.kiev.ua> <20150224174053.GG46794@funkthat.com> <1E4A5E62-6E06-48BA-B5C5-9BD05811CDEF@bsdimp.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="UlVJffcvxoiEqYs2" Content-Disposition: inline In-Reply-To: <1E4A5E62-6E06-48BA-B5C5-9BD05811CDEF@bsdimp.com> X-OS: FreeBSD 11.0-CURRENT amd64 User-Agent: Mutt/1.5.23 (2014-03-12) X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 16 May 2015 00:24:45 -0000 --UlVJffcvxoiEqYs2 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Feb 24, 2015 at 11:03:42AM -0700, Warner Losh wrote: >=20 > > On Feb 24, 2015, at 10:40 AM, John-Mark Gurney wrote: > >=20 > > Warner Losh wrote this message on Tue, Feb 24, 2015 at 07:56 -0700: > >> Then again, if you want to change random(), provide a weak_random() th= at???s > >> the traditional non-crypto thing that???s fast and lockless. That woul= d make it easy > >> to audit in our tree. The scheduler doesn???t need cryptographic rando= mness, it > >> just needs to make different choices sometimes to ensure its notion of= fairness. > >=20 > > I do not support having a weak_random... If the consumer is sure > > enough that you don't need a secure random, then they can pick an LCG > > and implement it themselves and deal (or not) w/ the locking issues... > >=20 > > It appears that the scheduler had an LCG but for some reason the authors > > didn't feel like using it here.. >=20 > Why don=E2=80=99t you support having a common random routine that=E2=80= =99s to mix the > pot, but not cryptographically secure? Lots of algorithms use them, and h= aving > a common one would keep us from reinventing the wheel. Sorry for being late to the party:) I'm with John-Mark on this one. I didn't find it being mentioned in the thread, but the more consumers we have of our CSPRNG the better. It makes it less predictable in case of a weekness in the algorithm / implementation / entropy sources. Because of that I'd much rather have the rule that if you don't want to use CSPRNG you need to prove that it is both not required and degrades performance. --=20 Pawel Jakub Dawidek http://www.wheelsystems.com FreeBSD committer http://www.FreeBSD.org Am I Evil? Yes, I Am! http://mobter.com --UlVJffcvxoiEqYs2 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCgAGBQJVVo5IAAoJEJVLhSuxKFt1l9wP+gI5C3VqxSB8hVyeW/SVV63y SthX3ZBwXcufQ0QCmMqUWTW9ZPcHmtArjOxHDMn0CBtdNamsO84oEN4aog2AERri /IIvfiEFigLj34q/IczzZBB2b6tUqZBGRZh49Tiv4mKDe3mR0Kz7gRActKs/g60z EeBkCfhzZZu6oGJ8r789+OUQpNoiXRvu8aNyRQdnmybVPXfWVivSw8gRyTp6opnV c/4ahCc106kL+d1jyTzaAu4jOSXeSLSwpQAUZmvUWHJxCs/B1CK13VYj4jmb7pTw zc3qTjvnau+teYfOqaFshizL/6dqKJ1hwMt3WbEduAFxZl93f0PZrmSYdbslPKTZ 6OWBrXYXO7O5TgOACfqfp297yrP5cRnOxrnxsIC9KTTqCPWfTpJZthyD/bHe4Zs7 rlyIhlHfNploUkkVnIxaFCgmS64UgDlH1nUYmd0T+PwcHt1nU9I7BuN8brkEYFH7 HhMQvoYF7ZuI05Q8uray8+CaYIQiAHrfjlMKx1ndAFcka3rmP2Fvh4TLfg+UXrSs Woiq4MkvRFUBJ7aiqIcRV/0p3h8OecQoXNwG0Yi38FQ9KLHkg1rVrdrGVpvDTNnf lGvYWftby7MWUliI0Azk8lCLtSO4fv36GtFNLbe6PMGkmI2siCJzBnYy1+/zKnbZ 8HFbccxHQ0d42gnal64L =5AW4 -----END PGP SIGNATURE----- --UlVJffcvxoiEqYs2--