From owner-freebsd-stable@FreeBSD.ORG Tue Aug 27 13:40:03 2013 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 123C9240 for ; Tue, 27 Aug 2013 13:40:03 +0000 (UTC) (envelope-from pluknet@gmail.com) Received: from mail-wg0-x233.google.com (mail-wg0-x233.google.com [IPv6:2a00:1450:400c:c00::233]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 9F7EA2840 for ; Tue, 27 Aug 2013 13:40:02 +0000 (UTC) Received: by mail-wg0-f51.google.com with SMTP id b12so2007878wgh.18 for ; Tue, 27 Aug 2013 06:40:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=K5K7XVkcwQP9uPobdTOvJAZbD6qZQkBRG4dLL2SEIfE=; b=OVj4Knt1+eeI4eUJvJefyC9HO8/r7SiQrHuklGO5/gOq6tUwtVnue2S4E8G+3V7Hyw Go44gC5cAajTV7bI7FcRlZKn+QXh7vR7mnor67DpBEeGysbcK+XkV6S2xOSkiWzs56yx O8jH++ALB5999zTiRF+HVXJvxVxG8KKp04z92/Aro2FAWCyXhH66GBybP2Roay3azktI 8O2tqdNDzqDZ2tTs9g2rYPQC7xUCMRssxP5ebI3pwwQsFtOzdm1cAdPmaA3E2BvBVG+p /LwaRdv9LrnMb0jfmyIwmn58O7+NyR0oHyv56NQ179LSfzDrBB6iOyzgm1HuKK0RvBXR tRuw== MIME-Version: 1.0 X-Received: by 10.180.207.84 with SMTP id lu20mr11587237wic.50.1377610800793; Tue, 27 Aug 2013 06:40:00 -0700 (PDT) Received: by 10.216.62.5 with HTTP; Tue, 27 Aug 2013 06:40:00 -0700 (PDT) In-Reply-To: <521C9E85.4060801@UToledo.edu> References: <521C9E85.4060801@UToledo.edu> Date: Tue, 27 Aug 2013 17:40:00 +0400 Message-ID: Subject: Re: Suggest changing dirhash defaults for FreeBSD 9.2. From: Sergey Kandaurov To: Robert Burmeister Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-stable X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Aug 2013 13:40:03 -0000 On 27 August 2013 16:41, Robert Burmeister wrote: > > I have been experimenting with dirhash settings, and have scoured the internet for other peoples' experience with it. > (I found the performance improvement in compiling has forestalled the need to add an SSD drive. ;-) > > I believe that increasing the following values by 10 would benefit most FreeBSD users without disadvantage. > > vfs.ufs.dirhash_maxmem: 2097152 to 20971520 > > vfs.ufs.dirhash_reclaimage: 5 to 50 or 60 vfs.ufs.dirhash_maxmem is further autotuned based on available physical memory. See r214359 for details. -- wbr, pluknet