From owner-freebsd-hackers@FreeBSD.ORG Tue Jun 5 14:29:52 2012 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id B7BF91065677 for ; Tue, 5 Jun 2012 14:29:52 +0000 (UTC) (envelope-from feld@feld.me) Received: from feld.me (unknown [IPv6:2607:f4e0:100:300::2]) by mx1.freebsd.org (Postfix) with ESMTP id 7D5428FC0A for ; Tue, 5 Jun 2012 14:29:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=feld.me; s=blargle; h=In-Reply-To:Message-Id:From:Mime-Version:Date:References:Subject:To:Content-Type; bh=uoxPiNNOL/OrYe/jpw8y8/kYQQ09ggTgWIdX0UUe4cA=; b=A9MY9Vx1vgBKnFuksxm7t7E34r6wO69c/DXn54Je9xXKpUs4Rckq/vZ88RJ5+oS7vUx8wg0GteRr9S3FmiwKbXvbepXYOmIKZSo/7G9+Jz6ad8npq6JHaPP8BdyoJ8P1; Received: from localhost ([127.0.0.1] helo=mwi1.coffeenet.org) by feld.me with esmtp (Exim 4.77 (FreeBSD)) (envelope-from ) id 1SbulV-0009bo-EK for freebsd-hackers@freebsd.org; Tue, 05 Jun 2012 09:29:51 -0500 Received: from feld@feld.me by mwi1.coffeenet.org (Archiveopteryx 3.1.4) with esmtpa id 1338906579-26372-26371/5/20; Tue, 5 Jun 2012 14:29:39 +0000 Content-Type: text/plain; charset=utf-8; format=flowed; delsp=yes To: freebsd-hackers@freebsd.org References: <1073159468.20120602121458@serebryakov.spb.ru> <4FC9D420.6010203@FreeBSD.org> <4FC9D68D.60405@FreeBSD.org> <4FC9FDBE.6080401@FreeBSD.org> Date: Tue, 5 Jun 2012 09:29:38 -0500 Mime-Version: 1.0 From: Mark Felder Message-Id: In-Reply-To: <4FC9FDBE.6080401@FreeBSD.org> User-Agent: Opera Mail/11.64 (FreeBSD) X-SA-Score: -1.5 Subject: Re: SuperPages utilization survey 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, 05 Jun 2012 14:29:52 -0000 On Sat, 02 Jun 2012 06:49:18 -0500, Florian Smeets wrote: > As far as i understand it does at least enable usage of pages up to 4MB, > perhaps someone should teach mysql about the FreeBSD's limits? > If you look at the output i sent, it certainly changes from using no > superpage mappings at all to using them to some degree, if you script > can be trusted Wow, this is a nice find. If someone were to add a patch for FreeBSD's superpages we might be able to get a nice little performance boost with little effort. Even the increase to 4MB for now is a welcome improvement. I'll make sure to put this in my toolbox....