From owner-freebsd-fs@FreeBSD.ORG Thu Jul 21 19:36:54 2011 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EBBF8106566C; Thu, 21 Jul 2011 19:36:54 +0000 (UTC) (envelope-from lists.br@gmail.com) Received: from mail-gx0-f182.google.com (mail-gx0-f182.google.com [209.85.161.182]) by mx1.freebsd.org (Postfix) with ESMTP id 8FC428FC16; Thu, 21 Jul 2011 19:36:54 +0000 (UTC) Received: by gxk28 with SMTP id 28so963673gxk.13 for ; Thu, 21 Jul 2011 12:36:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to:x-mailer; bh=bEcGay190T+wbUOE7hPnnKsVjvRQ7hYgE5nD65OP+M4=; b=ierofPsGdG8T93o3+OPuicRTh0yJtD+QrluWTn70qjLHy3ZpHijTimEkr7LIa6xBnC NE9op0PMhQlm4rXx/8OL1FffOb/iT60U7tlw1mAXJ8D0LVyGwI9/ndGky2EVylewPKXX EttnLNSp90lzSpSo8mSMEXVkDG9GZcktiBrpk= Received: by 10.150.201.12 with SMTP id y12mr1105421ybf.53.1311277013679; Thu, 21 Jul 2011 12:36:53 -0700 (PDT) Received: from [192.168.0.53] ([187.120.139.136]) by mx.google.com with ESMTPS id h6sm1295330ybi.20.2011.07.21.12.36.51 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 21 Jul 2011 12:36:52 -0700 (PDT) Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: text/plain; charset=us-ascii From: Luiz Otavio O Souza In-Reply-To: Date: Thu, 21 Jul 2011 16:36:49 -0300 Content-Transfer-Encoding: quoted-printable Message-Id: <5542D910-0C5C-4B2B-885F-CC92901367F0@gmail.com> References: <13577F3E-DE59-44F4-98F7-9587E26499B8@gmail.com> To: David P Discher X-Mailer: Apple Mail (2.1084) Cc: freebsd-fs@freebsd.org, Ivan Voras Subject: Re: ZFS and large directories - caveat report X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Jul 2011 19:36:55 -0000 On Jul 21, 2011, at 3:48 PM, David P Discher wrote: >=20 > Ivan - >=20 > What's your uptime ? > Are you using l2 arc ? > what is the value of 'sysctl kstat.zfs.misc.arcstats.evict_skip' ? > is this increasing quickly ? >=20 Don't know about Ivan's case, but mine is definitively increasing it = quickly (and i'm not using l2arc): sysctl kstat.zfs.misc.arcstats.evict_skip = = =20 kstat.zfs.misc.arcstats.evict_skip: 129995601 And just a few minutes later (while running find on my 4 million files = FS): sysctl kstat.zfs.misc.arcstats.evict_skip kstat.zfs.misc.arcstats.evict_skip: 130589384 But i guess i need to increase the arc_meta_limit as well: vfs.zfs.arc_meta_limit: 536870912 vfs.zfs.arc_meta_used: 579461312 kstat.zfs.misc.arcstats.demand_data_hits: 4400985059 kstat.zfs.misc.arcstats.demand_data_misses: 699262 kstat.zfs.misc.arcstats.demand_metadata_hits: 1057208432 kstat.zfs.misc.arcstats.demand_metadata_misses: 32782389 kstat.zfs.misc.arcstats.prefetch_data_hits: 3302738888 kstat.zfs.misc.arcstats.prefetch_data_misses: 225108 kstat.zfs.misc.arcstats.prefetch_metadata_hits: 418744564 kstat.zfs.misc.arcstats.prefetch_metadata_misses: 147815306 kstat.zfs.misc.arcstats.evict_skip: 130781386 kstat.zfs.misc.arcstats.evict_l2_cached: 0 kstat.zfs.misc.arcstats.evict_l2_eligible: 2514187700736 kstat.zfs.misc.arcstats.evict_l2_ineligible: 176966735360 Unfortunately i need to wait a little bit until i can reboot this server = with the new sysctl values. Thanks everyone for the hints so far. Luiz=