From owner-freebsd-fs@FreeBSD.ORG Tue Aug 24 20:33:34 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 9D006106564A for ; Tue, 24 Aug 2010 20:33:34 +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 DE7CC8FC08 for ; Tue, 24 Aug 2010 20:33:33 +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 XAA13771; Tue, 24 Aug 2010 23:33:23 +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 1Oo0BP-000HwX-F7; Tue, 24 Aug 2010 23:33:23 +0300 Message-ID: <4C742C8F.2030401@icyb.net.ua> Date: Tue, 24 Aug 2010 23:33:19 +0300 From: Andriy Gapon User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.9.2.8) Gecko/20100822 Lightning/1.0b2 Thunderbird/3.1.2 MIME-Version: 1.0 To: Peter Jeremy References: <20100810214418.GA28288@tolstoy.tols.org> <20100811014919.GA52992@icarus.home.lan> <20100811192537.GA44635@tolstoy.tols.org> <20100811214302.GB44635@tolstoy.tols.org> <20100812205625.GA79515@server.vk2pj.dyndns.org> <20100824150035.GB99477@roberto-al.eurocontrol.fr> <20100824200527.GC11990@server.vk2pj.dyndns.org> In-Reply-To: <20100824200527.GC11990@server.vk2pj.dyndns.org> X-Enigmail-Version: 1.1.2 Content-Type: text/plain; charset=KOI8-U Content-Transfer-Encoding: 7bit Cc: freebsd-fs@freebsd.org Subject: Re: zfs arc - just take it all and be good to me 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: Tue, 24 Aug 2010 20:33:34 -0000 on 24/08/2010 23:05 Peter Jeremy said the following: > On 2010-Aug-24 17:00:36 +0200, Ollivier Robert wrote: >> According to Peter Jeremy: >>> I suspect Artem is referring to his patch at http://pastebin.com/ZCkzkWcs >>> which I have tweaked somewhat (see the last patch in >>> http://www.freebsd.org/cgi/query-pr.cgi?pr=146410 ). >> >> Thanks, cou you please send it in a non-QP-encoded form please? > > See attached. >>> Whilst these patches _are_ hacks, they seem to do a good job of >>> making ZFS and UFS play together. >> >> Is the patch only useful in these mixed situations or could it be also interestng for those of use running full-zfs (cf. http://www.keltia.net/howtos/zfsboot)? > > I think it will be useful. As well as the trivial fix to count > "cache" as "free" space (which is now in -stable), the intent of the > patch is to improve the ability of ZFS to apply pressure to the VM > subsystem. In theory, this should improve overall system performance > even in a ZFS-only environment where there is memory pressure due to > large, long-running processes Peter, Ollivier, would it be possible for you to test patch informally specified in the following post? http://thread.gmane.org/gmane.os.freebsd.devel.hackers/40788 -- Andriy Gapon