From owner-freebsd-fs@FreeBSD.ORG Fri Mar 2 09:41:58 2012 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 B0395106564A for ; Fri, 2 Mar 2012 09:41:58 +0000 (UTC) (envelope-from alexander@leidinger.net) Received: from mail.ebusiness-leidinger.de (mail.ebusiness-leidinger.de [217.11.53.44]) by mx1.freebsd.org (Postfix) with ESMTP id 53BAA8FC22 for ; Fri, 2 Mar 2012 09:41:58 +0000 (UTC) Received: from outgoing.leidinger.net (p5796C459.dip.t-dialin.net [87.150.196.89]) by mail.ebusiness-leidinger.de (Postfix) with ESMTPSA id 30511844754; Fri, 2 Mar 2012 10:25:17 +0100 (CET) Received: from webmail.leidinger.net (webmail.Leidinger.net [IPv6:fd73:10c7:2053:1::3:102]) by outgoing.leidinger.net (Postfix) with ESMTPS id 6409E1499; Fri, 2 Mar 2012 10:25:14 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=leidinger.net; s=outgoing-alex; t=1330680314; bh=5QyKGocFBu/2XKhkfJ4/E8j3NM6lYfhPLHjD+SsgpSQ=; h=Date:Message-ID:From:To:Cc:Subject:References:In-Reply-To: Content-Type:MIME-Version; b=FyCEmMVWETd0dg2fsmf6DKAsi/ftsw/56fWc9HYHOwjThkqYyqkq+Z41OSsrGF3Gt WnLvycrl1hZH0GDkOE0RDxRJ8VAsp83rqe+17Wyeg1L2WvqMV9VLsbHwbZYfaOFn0n CqQqPrMZlcauw4SP2AL+jBRAjcN//6CK1Smk8S8SyxH7eTFe//BwxGtk3aSK82Ixxh OI47pVx6yXGFmRI3NnBlTNb5ilIwwekkoJTT4/5oNx+2eyyaOhDdBtI+yf73k7Awge bq1Vvopo4JPHaVrL9XuIWZD4YWKYWweNaYS45zh87j9lF3BLK4io4FG7/gGSsOmmdC y67haqUhmodnw== Received: (from www@localhost) by webmail.leidinger.net (8.14.5/8.14.4/Submit) id q229P9sF030600; Fri, 2 Mar 2012 10:25:09 +0100 (CET) (envelope-from Alexander@Leidinger.net) X-Authentication-Warning: webmail.leidinger.net: www set sender to Alexander@Leidinger.net using -f Received: from 85.94.224.19 ([85.94.224.19]) by webmail.leidinger.net (Horde Framework) with HTTP; Fri, 02 Mar 2012 10:25:09 +0100 Date: Fri, 02 Mar 2012 10:25:09 +0100 Message-ID: <20120302102509.Horde.6uPSdpjmRSRPUJH1lHEHc3A@webmail.leidinger.net> From: Alexander Leidinger To: Slawa Olhovchenkov References: <1330081612.13430.39.camel@pow> <20120227181436.GA49667@server.vk2pj.dyndns.org> <20120301142826.GG97848@zxy.spb.ru> In-Reply-To: <20120301142826.GG97848@zxy.spb.ru> User-Agent: Internet Messaging Program (IMP) H4 (5.0.18) Content-Type: text/plain; charset=ISO-8859-1; format=flowed; DelSp=Yes MIME-Version: 1.0 Content-Disposition: inline X-EBL-MailScanner-Information: Please contact the ISP for more information X-EBL-MailScanner-ID: 30511844754.AF00A X-EBL-MailScanner: Found to be clean X-EBL-MailScanner-SpamCheck: not spam, spamhaus-ZEN, SpamAssassin (not cached, score=-0.63, required 6, autolearn=disabled, AWL -0.52, DKIM_SIGNED 0.10, DKIM_VALID -0.10, DKIM_VALID_AU -0.10, T_RP_MATCHES_RCVD -0.01) X-EBL-MailScanner-From: alexander@leidinger.net X-EBL-MailScanner-Watermark: 1331285118.98985@gGJ43yjbyPyQdVSP2GBu5Q X-EBL-Spam-Status: No Cc: freebsd-fs@freebsd.org, team@hybrid-logic.co.uk, "freebsd-stable@freebsd.org" Subject: Re: Another ZFS ARC memory question 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: Fri, 02 Mar 2012 09:41:58 -0000 Quoting Slawa Olhovchenkov (from Thu, 1 Mar 2012 18:28:26 +0400): > On Tue, Feb 28, 2012 at 05:14:37AM +1100, Peter Jeremy wrote: > >> > * what is the community's advice for production machines running >> > ZFS on FreeBSD, is manually limiting the ARC cache (to ensure >> > that there's enough actually free memory to handle a spike in >> > application memory usage) the best solution to this >> > spike-in-memory-means-crash problem? >> >> Are you swapping onto a ZFS vdev? If so, change back to a raw (or >> geom) device - swapping to ZFS is known to be problematic. If you > > I see kernel stuck when swapping to ZFS. This is only known problem? This is a known problem. Don't use swap on a zpool. If you want fault tollerance use gmirror for the swap paritions instead (make sure the swap partition does end _before_ the last sector of the disk in this case). Bye, Alexander. -- As of next Thursday, UNIX will be flushed in favor of TOPS-10. Please update your programs. http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137