From owner-freebsd-stable@FreeBSD.ORG Mon Jan 18 16:29:49 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 97B01106566B for ; Mon, 18 Jan 2010 16:29:49 +0000 (UTC) (envelope-from npapke@acm.org) Received: from idcmail-mo1so.shaw.ca (idcmail-mo1so.shaw.ca [24.71.223.10]) by mx1.freebsd.org (Postfix) with ESMTP id 606EF8FC08 for ; Mon, 18 Jan 2010 16:29:49 +0000 (UTC) Received: from pd2ml3so-ssvc.prod.shaw.ca ([10.0.141.148]) by pd3mo1so-svcs.prod.shaw.ca with ESMTP; 18 Jan 2010 09:29:48 -0700 X-Cloudmark-SP-Filtered: true X-Cloudmark-SP-Result: v=1.0 c=1 a=UTAa5JNdb5oA:10 a=VF9RaR9bft6c8SsOr3WyFg==:17 a=N54-gffFAAAA:8 a=lvbMJxvVAAAA:8 a=1U_RM8WOjPZmsj63ZXsA:9 a=Ka3TPYiD9yAtmhqh6i6MieQX5DUA:4 a=nAPXUAfsBmEA:10 Received: from unknown (HELO proven.lan.provenpath.ca) ([24.85.241.34]) by pd2ml3so-dmz.prod.shaw.ca with ESMTP; 18 Jan 2010 09:29:48 -0700 Received: from proven.lan.provenpath.ca (localhost [127.0.0.1]) by proven.lan.provenpath.ca (8.14.3/8.14.3) with ESMTP id o0IGTmZM005594 for ; Mon, 18 Jan 2010 08:29:48 -0800 (PST) (envelope-from npapke@acm.org) Received: (from npapke@localhost) by proven.lan.provenpath.ca (8.14.3/8.14.3/Submit) id o0IGTmK1005593 for freebsd-stable@freebsd.org; Mon, 18 Jan 2010 08:29:48 -0800 (PST) (envelope-from npapke@acm.org) X-Authentication-Warning: proven.lan.provenpath.ca: npapke set sender to npapke@acm.org using -f From: Norbert Papke To: freebsd-stable@freebsd.org Date: Mon, 18 Jan 2010 08:29:48 -0800 User-Agent: KMail/1.12.4 (FreeBSD/8.0-STABLE; KDE/4.3.4; amd64; ; ) References: <7346c5c61001030842r7dc76199y51e4c1c90a3eea6e@mail.gmail.com> <7346c5c61001091706m45a3a2a5k3ca8bb0c4bec5ea8@mail.gmail.com> <7346c5c61001171521w1ca4738w98e8fcca24643cda@mail.gmail.com> In-Reply-To: <7346c5c61001171521w1ca4738w98e8fcca24643cda@mail.gmail.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <201001180829.48126.npapke@acm.org> Subject: Re: ZFS performance degradation over time X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Jan 2010 16:29:49 -0000 On January 17, 2010, Garrett Moore wrote: > I upgraded my system to 8GB of ram to see if that would help. It hasn't > made much of a difference. After having rTorrent running for a while, my > performance again tanked. Around 6.5GB of memory was showing as 'Active' > according to top. 6.5GB of "active" memory seems to imply that a user process is growing or a large number of user processes are being created. I would expect ZFS's cache to increase the size of "wired" memory. Sorry, I have not followed this thread closely. Are you sure that the degradation is ZFS related? Could it be caused by, for instance, a userland memory leak? What happens to active memory when you restart rtorrent? Cheers, -- Norbert Papke. npapke@acm.org http://saveournet.ca Protecting your Internet's level playing field