From owner-freebsd-hackers@freebsd.org Fri Nov 6 18:55:28 2015 Return-Path: Delivered-To: freebsd-hackers@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 24BF0A2856D for ; Fri, 6 Nov 2015 18:55:28 +0000 (UTC) (envelope-from trtrmitya@gmail.com) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 06012119C for ; Fri, 6 Nov 2015 18:55:28 +0000 (UTC) (envelope-from trtrmitya@gmail.com) Received: by mailman.ysv.freebsd.org (Postfix) id 035CEA2856C; Fri, 6 Nov 2015 18:55:28 +0000 (UTC) Delivered-To: hackers@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 02F5BA2856B for ; Fri, 6 Nov 2015 18:55:28 +0000 (UTC) (envelope-from trtrmitya@gmail.com) Received: from mail-lb0-x230.google.com (mail-lb0-x230.google.com [IPv6:2a00:1450:4010:c04::230]) (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 801F2119B for ; Fri, 6 Nov 2015 18:55:27 +0000 (UTC) (envelope-from trtrmitya@gmail.com) Received: by lbbkw15 with SMTP id kw15so58167890lbb.0 for ; Fri, 06 Nov 2015 10:55:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:content-type:content-transfer-encoding:subject:message-id:date :to:mime-version; bh=mrnSwdOH+ZQmQ4lV25eHCCf2sjkF50Ipln/LYndbM98=; b=rqV5i8ESF5aWJG8NrkO+mShyiX2s0eAqLcS9Ew1f8BqV50gdSsGlYn7C+nG4bYqeUB UG8o8Kci4ju00uT83zJY4FEUKgvCggajJwFZvoc7VhFhWkN8DArvkhT0DIdNA02gm0rw 32plsM4r4HmUMnMhNTBQzpamuBttXecqef2DkHqjW5W8bLz0XlN6/uGt22GXfFfE0csL 9ko81YlLfeN+k9sHottLunfFffqvnecH9avv0XlJ0BtIOADZ2fD0xogv9aPjYnWNe+nR OBp18h79nRdGH2Dmv4pXUSbaPleJRIpI3T97oYOO5KwlWWvhSI/wRZ6aRmXz767f/JRT 6Gtw== X-Received: by 10.112.173.198 with SMTP id bm6mr7807510lbc.43.1446836125640; Fri, 06 Nov 2015 10:55:25 -0800 (PST) Received: from [10.0.1.3] (broadband-5-228-251-240.nationalcablenetworks.ru. [5.228.251.240]) by smtp.gmail.com with ESMTPSA id so5sm237310lbb.43.2015.11.06.10.55.24 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 06 Nov 2015 10:55:24 -0800 (PST) From: Dmitry Sivachenko Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Subject: Fair Share Scheduler Message-Id: <9505464C-E8C1-4C08-9986-08B8C4E6571A@gmail.com> Date: Fri, 6 Nov 2015 21:55:24 +0300 To: hackers@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 9.1 \(3096.5\)) X-Mailer: Apple Mail (2.3096.5) X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Nov 2015 18:55:28 -0000 Hello, some time ago there was a lottery scheduler for FreeBSD = (http://www.hypersurface.net/dpetrou/research.html), there is a code for = FreeBSD 2.x -- 4.8 there. The idea is to try to give equal amount of cpu for each user, regardless = of how many threads they spawn. Solaris has Fair Share Scheduler which does similar things. This is very important for multi-user development machines, where there = are a lot of users who can spawn several multi-threaded processes, = almost monopolizing CPU resources. How hard would be to adopt it to current FreeBSD version (or may be = there are efforts to write something similar?) Thanks!=