From owner-freebsd-current@FreeBSD.ORG Thu Sep 30 21:29:49 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 556821065672; Thu, 30 Sep 2010 21:29:49 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: from mail-qy0-f175.google.com (mail-qy0-f175.google.com [209.85.216.175]) by mx1.freebsd.org (Postfix) with ESMTP id C97A48FC14; Thu, 30 Sep 2010 21:29:48 +0000 (UTC) Received: by qyk8 with SMTP id 8so532575qyk.13 for ; Thu, 30 Sep 2010 14:29:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:sender:received :in-reply-to:references:date:x-google-sender-auth:message-id:subject :from:to:cc:content-type:content-transfer-encoding; bh=ykVBo2fYnPZk9gfOnk750grUpUcV01U6bTRlhYxily8=; b=u91jN5poX9T0plIqlos60QlXslg/8Lw3yfIs7A/GMUUpxjTRtpnrdATAxNvVtaAGT5 zWQjDS1+K3SuiI0zTNKA9wGy4n7ijYP79KUEWlQTotEDmqs30rNZgJ3GaHfErJCdQCVr tBEhyfgsFfgbYijR6OAn/9qwErgYHuaCXs2HE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=II+KjhmWbjlamPVd+/QkveY+ek11a4YRldYoGVlqGeOl8GybwlzJMCKD2NMyKWCSJY 72bth4ROtYo7G0fW54zoBhJBXYazn+4oZZoOr35DK+dydvlb81gSGqngrO1bbOnoB9L8 3OI/5wqSesYLPjD+8KqepKGw6SwSZ941W4In0= MIME-Version: 1.0 Received: by 10.229.1.70 with SMTP id 6mr2980766qce.251.1285880730999; Thu, 30 Sep 2010 14:05:30 -0700 (PDT) Sender: asmrookie@gmail.com Received: by 10.229.221.141 with HTTP; Thu, 30 Sep 2010 14:05:30 -0700 (PDT) In-Reply-To: <4CA4CCF8.1050300@freebsd.org> References: <4CA4BCD2.4070303@freebsd.org> <20100930172439.GA34369@freebsd.org> <4CA4CCF8.1050300@freebsd.org> Date: Thu, 30 Sep 2010 23:05:30 +0200 X-Google-Sender-Auth: 0KiDwJlpl0WPQBzbnRI06KolDlI Message-ID: From: Attilio Rao To: Andre Oppermann Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: freebsd-current@freebsd.org Subject: Re: Examining the VM splay tree effectiveness X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Sep 2010 21:29:49 -0000 2010/9/30 Andre Oppermann : > On 30.09.2010 19:24, Roman Divacky wrote: >> >> are you aware of Summer of Code 2008 project by Mayur Shardul? > > I remember that there was this project but I never saw any numbers > or other outcome of it. =C2=A0Haven't checked p4 to look at the code > though. The final code (Jeff took Mayur initial patches and further refined) resulted in a very variadic performance for simple tests, so I think that the last posted codes had the same performance, overall, than the splay tree. I recall, however, that there were still rooms for improvement. Ask Jeff about the last patches. Thanks, Attilio --=20 Peace can only be achieved by understanding - A. Einstein