From owner-freebsd-hackers@FreeBSD.ORG Tue Mar 27 14:28:03 2012 Return-Path: Delivered-To: hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 37D621065670; Tue, 27 Mar 2012 14:28:03 +0000 (UTC) (envelope-from ivoras@gmail.com) Received: from mail-yx0-f182.google.com (mail-yx0-f182.google.com [209.85.213.182]) by mx1.freebsd.org (Postfix) with ESMTP id D15088FC18; Tue, 27 Mar 2012 14:28:02 +0000 (UTC) Received: by yenl9 with SMTP id l9so5663703yen.13 for ; Tue, 27 Mar 2012 07:28:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:from:date :x-google-sender-auth:message-id:subject:to:cc:content-type; bh=b6klrsllFaJKOAlM/RTlDetBj9xxUcjvbPNgghXb7x8=; b=ksIqZNCdgZXfuquYnLjCqzt803HHD89ueQCArcb9HJImfn4367TIs+q+6b3RS5t8Eo 9PrWS25lv7zmp5ZeHYApfppOUZHWvaCVy7XXqMt+n8q+MnbTytt/9WWJ3T1/J2WER6qo QTfAK/jlwJUJKWzjfrcJJ1yCdkunQWSgI4dj/CHkzC1wK1a43nSnl0Dpb7753+/dEwAP T83HqvW7ngfwlLkjYr+r9w1t/oCQp9Xk5Usa8JAnQVhmMYXvRxNQmwzru2n/TqH9+k1R Q/tKUnYHVgTl6VDg4aqhc8ZmHkyDzs2xkMXcnCHaM69IiiwjPiMmxS2eXBAUp3CBaK0e eUng== Received: by 10.236.193.41 with SMTP id j29mr2492343yhn.14.1332858482220; Tue, 27 Mar 2012 07:28:02 -0700 (PDT) MIME-Version: 1.0 Sender: ivoras@gmail.com Received: by 10.101.101.10 with HTTP; Tue, 27 Mar 2012 07:27:20 -0700 (PDT) In-Reply-To: References: <4F45AB76.5050201@FreeBSD.org> From: Ivan Voras Date: Tue, 27 Mar 2012 16:27:20 +0200 X-Google-Sender-Auth: uH1KVV6pI4wI6LYqSmlXhT-0uUQ Message-ID: To: "Samuel J. Greear" Content-Type: text/plain; charset=UTF-8 Cc: "hackers@freebsd.org" , Doug Barton Subject: Re: PostgreSQL benchmarks (now with Linux numbers) X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Mar 2012 14:28:03 -0000 >> On 02/22/2012 01:42, Ivan Voras wrote: >> > The Dragonfly team has recently liberated their VM from the giant lock >> > and there are some interesting benchmarks comparing it to FreeBSD 9 and a >> > derivative of RedHat Enterprise Linux: > I just saw this, so I thought I would mention -- DragonFly was not doing a > great job allocating pv entries rapidly, which is needed during PostgreSQL > warm up -- This made shm_use_phys appear very effective. It only makes 1-2% > difference now on DragonFly, and only 1-2% difference on FreeBSD. Great! Do you have a link to the updated results?