From owner-soc-status@FreeBSD.ORG Sun Jun 12 22:09:58 2011 Return-Path: Delivered-To: soc-status@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 050FF106564A for ; Sun, 12 Jun 2011 22:09:58 +0000 (UTC) (envelope-from rudotx@gmail.com) Received: from mail-bw0-f54.google.com (mail-bw0-f54.google.com [209.85.214.54]) by mx1.freebsd.org (Postfix) with ESMTP id 8D68E8FC15 for ; Sun, 12 Jun 2011 22:09:57 +0000 (UTC) Received: by bwz12 with SMTP id 12so4869102bwz.13 for ; Sun, 12 Jun 2011 15:09:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:from:date:message-id:subject:to :content-type; bh=7KAoOU2WgU2ucwIFoOx7+SKfhqdIW7Gev3el7ext6d8=; b=Vx26UvbR9kyxF5fLJ7hpm9J5aScxhP7tULYeNYWMFLoAeSvKJ6e1+THIaoy7Ap1x28 QkTY1mVv0+Qpdy/JN4OCzw3oWKmhV3Czp3GYFKW7VIATVfBQgg7lUsvmCPrB6lPnM0Q6 PGCI5REge08gpTuRykIZ7Fp//Wm763Mv5KuP0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:from:date:message-id:subject:to:content-type; b=L8duozGI/McFPyaBnh8CEQef/YkCmBFfB5U0YXrRFvgD6A2qakRDE0Hs0KIbc71r6f KAsbneb88/BrWVoXamQREQx7762k432EioF++WjM7dSSuSr4Ck9fQCCsGpafTUdl9FV1 fl0jPlrfZBfKGGbYp869ADfnHRuQ8/5CWhBKo= Received: by 10.204.138.205 with SMTP id b13mr4263515bku.27.1307916596130; Sun, 12 Jun 2011 15:09:56 -0700 (PDT) MIME-Version: 1.0 Received: by 10.204.47.80 with HTTP; Sun, 12 Jun 2011 15:09:36 -0700 (PDT) From: rudo tomori Date: Mon, 13 Jun 2011 00:09:36 +0200 Message-ID: To: soc-status@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Subject: BFS scheduler weekly status report X-BeenThere: soc-status@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Summer of Code Status Reports and Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Jun 2011 22:09:58 -0000 Hi, the goal of my project is to implement a BFS - like scheduler into the FreeBSD. I started off with the original 4.4BSD code, and by iterative modifications I will develop a scheduler that matches the BFS design as specified in http://ck.kolivas.org/patches/bfs/sched-BFS.txt. Last week I finished the initial benchmarking - I have run sysbench benchmarks on a 8 cpu machine. Then I modified the mapping of threads to the priority queues according to their priority. BFS uses a single queue for timesharing threads and a single queue for idle threads. I keed the number of queues at 64. I will write more about it at my blog http://rudot.blog.com/ tomorrow. Next week I will implement a virtual deadline for the time sharing threads. rudo