From owner-freebsd-fs@FreeBSD.ORG Thu Apr 15 22:19:41 2010 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 31003106564A for ; Thu, 15 Apr 2010 22:19:41 +0000 (UTC) (envelope-from avg@icyb.net.ua) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id 617E28FC12 for ; Thu, 15 Apr 2010 22:19:39 +0000 (UTC) Received: from porto.topspin.kiev.ua (porto-e.starpoint.kiev.ua [212.40.38.100]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id BAA13284 for ; Fri, 16 Apr 2010 01:19:38 +0300 (EEST) (envelope-from avg@icyb.net.ua) Received: from localhost.topspin.kiev.ua ([127.0.0.1]) by porto.topspin.kiev.ua with esmtp (Exim 4.34 (FreeBSD)) id 1O2XPO-0006US-Gl for freebsd-fs@freebsd.org; Fri, 16 Apr 2010 01:19:38 +0300 Message-ID: <4BC790FA.3040205@icyb.net.ua> Date: Fri, 16 Apr 2010 01:19:38 +0300 From: Andriy Gapon User-Agent: Thunderbird 2.0.0.24 (X11/20100321) MIME-Version: 1.0 To: freebsd-fs@freebsd.org X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: kstat.zfs.misc.arcstats.hash_collisions 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, 15 Apr 2010 22:19:41 -0000 kstat.zfs.misc.arcstats.hash_elements: 8465 kstat.zfs.misc.arcstats.hash_elements_max: 336855 kstat.zfs.misc.arcstats.hash_collisions: 3463061 kstat.zfs.misc.arcstats.hash_chains: 549 kstat.zfs.misc.arcstats.hash_chain_max: 19 Doesn't hash_collisions value look fishy? I haven't looked at the code yet. Perhaps stats gathering is not correct, perhaps something else, but collisions value is really too high for my taste. -- Andriy Gapon