From owner-freebsd-stable@freebsd.org Wed Nov 25 07:20:43 2015 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 90828A36E93 for ; Wed, 25 Nov 2015 07:20:43 +0000 (UTC) (envelope-from gerrit.kuehn@aei.mpg.de) Received: from umail.aei.mpg.de (umail.aei.mpg.de [194.94.224.6]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 362AC1D23 for ; Wed, 25 Nov 2015 07:20:42 +0000 (UTC) (envelope-from gerrit.kuehn@aei.mpg.de) Received: from mailgate.aei.mpg.de (mailgate.aei.mpg.de [194.94.224.5]) by umail.aei.mpg.de (Postfix) with ESMTP id 029D320031A for ; Wed, 25 Nov 2015 08:12:20 +0100 (CET) Received: from mailgate.aei.mpg.de (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id D9FEE405882 for ; Wed, 25 Nov 2015 08:12:20 +0100 (CET) Received: from intranet.aei.uni-hannover.de (ahin1.aei.uni-hannover.de [130.75.117.40]) by mailgate.aei.mpg.de (Postfix) with ESMTP id B1817405881 for ; Wed, 25 Nov 2015 08:12:20 +0100 (CET) Received: from arc.aei.uni-hannover.de ([10.117.15.110]) by intranet.aei.uni-hannover.de (Lotus Domino Release 8.5.3FP6HF1691) with ESMTP id 2015112508121028-409039 ; Wed, 25 Nov 2015 08:12:10 +0100 Date: Wed, 25 Nov 2015 08:12:10 +0100 From: Gerrit =?ISO-8859-1?Q?K=FChn?= To: freebsd-stable@freebsd.org Subject: Re: ZFS - poor performance with "large" directories Message-Id: <20151125081210.6ce3d9404b314fcfb31b061f@aei.mpg.de> In-Reply-To: References: <5654855F.2070502@sentex.net> Organization: Max Planck Gesellschaft X-Mailer: Sylpheed 3.4.2 (GTK+ 2.24.22; amd64-portbld-freebsd10.0) Mime-Version: 1.0 X-MIMETrack: Itemize by SMTP Server on intranet/aei-hannover(Release 8.5.3FP6HF1691 | May 7, 2015) at 25.11.2015 08:12:10, Serialize by Router on intranet/aei-hannover(Release 8.5.3FP6HF1691 | May 7, 2015) at 25.11.2015 08:12:20, Serialize complete at 25.11.2015 08:12:20 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII X-PMX-Version: 6.0.2.2308539, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2015.11.25.70316 X-PerlMx-Spam: Gauge=X, Probability=10%, Report=' URI_SNOWNS_NS_NAME 0.5, HTML_00_01 0.05, HTML_00_10 0.05, MIME_LOWER_CASE 0.05, BODYTEXTP_SIZE_3000_LESS 0, BODY_SIZE_1000_LESS 0, BODY_SIZE_2000_LESS 0, BODY_SIZE_400_499 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, DQ_SUSP_1 0, NO_URI_HTTPS 0, REFERENCES 0, SINGLE_URI_IN_BODY 0, __ANY_URI 0, __BOUNCE_CHALLENGE_SUBJ 0, __BOUNCE_NDR_SUBJ_EXEMPT 0, __CT 0, __CTE 0, __CT_TEXT_PLAIN 0, __DQ_HEUR_1 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __IN_REP_TO 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __REFERENCES 0, __SANE_MSGID 0, __SINGLE_URI_TEXT 0, __SUBJ_ALPHA_NEGATE 0, __TO_MALFORMED_2 0, __TO_NO_NAME 0, __URI_IN_BODY 0, __URI_NO_PATH 0, __URI_NO_WWW 0, __URI_NS ' X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Nov 2015 07:20:43 -0000 On Tue, 24 Nov 2015 17:11:54 +0100 Albert Cervin wrote about Re: ZFS - poor performance with "large" directories: AC> Will try a bit with the meta limit. You can also put metadata on a flash device to speed things up. To check if this is really the bottleneck in your case, something simple like a USB stick might suffice to try out: cu Gerrit