From owner-soc-status@FreeBSD.ORG Sun Jun 5 21:15:41 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 E75EE1065677 for ; Sun, 5 Jun 2011 21:15:41 +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 74A178FC13 for ; Sun, 5 Jun 2011 21:15:41 +0000 (UTC) Received: by bwz12 with SMTP id 12so4392410bwz.13 for ; Sun, 05 Jun 2011 14:15:40 -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=VAlH5RjD9zOaXlewddFe8XUAan/lUqw7OQMIpdxm3pw=; b=QE0K/Sz4YEyWi0D1HB6ObKSSoimLGumIlz7iK69p7mJZlRdJtWEayQ2DZ2azcsMK2f cFRCoXXg4gAv2LJYtpzxs9kJWpABDrQyyIg/rYOBKqL7+c+TAeA5BpiLsKgVaTgYuKbA mhG0Ioqu0XFIlNuUAb6FThqPPq4phS0ZFPADQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:from:date:message-id:subject:to:content-type; b=XyL2uWAXVaNIDiwN4W8pU3y30OPnF1OarzWs92+o20qDe3hQ1yE+ofrnnAHgOPkEvQ gKl34yzzf8gMGTBuHCvDzxZIwTQqYk+sYv8RFrhVcTIRaR9cNtJFE6bpAQvAtT79qY9B OOyZQgylZC3Crcg6Wb23R7Chw0qdwg7TRHWQw= Received: by 10.204.143.88 with SMTP id t24mr4410409bku.189.1307308540132; Sun, 05 Jun 2011 14:15:40 -0700 (PDT) MIME-Version: 1.0 Received: by 10.204.56.134 with HTTP; Sun, 5 Jun 2011 14:15:20 -0700 (PDT) From: rudo tomori Date: Sun, 5 Jun 2011 23:15:20 +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, 05 Jun 2011 21:15:42 -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 was performing benchmarks using sysbench and make world. I tried to minimize disk IO by using tmpfs. You can find more details at my project blog site rudot.blog.com This week I will continue with running the benchmarks on other hardware. After that I will probably continue by changing the mapping of thread priorities to a specific priority queue in the global run queue. The BFS uses only 1 queue for all time-sharing processes. rudo