From owner-freebsd-stable@FreeBSD.ORG Sat Nov 21 23:51:40 2009 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 25F42106579F for ; Sat, 21 Nov 2009 23:51:40 +0000 (UTC) (envelope-from randy@psg.com) Received: from ran.psg.com (ran.psg.com [IPv6:2001:418:1::36]) by mx1.freebsd.org (Postfix) with ESMTP id 087AD8FC0A for ; Sat, 21 Nov 2009 23:51:40 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=rmac.psg.com) by ran.psg.com with esmtp (Exim 4.69 (FreeBSD)) (envelope-from ) id 1NBzju-000AM2-4s; Sat, 21 Nov 2009 23:51:38 +0000 Received: from host-40-47.meeting.ietf.org.psg.com (localhost [127.0.0.1]) by rmac.psg.com (Postfix) with ESMTP id 9BF582C2BC79; Sun, 22 Nov 2009 08:51:37 +0900 (JST) Date: Sun, 22 Nov 2009 08:51:37 +0900 Message-ID: From: Randy Bush To: Peter Jeremy In-Reply-To: <20091121205712.GB35595@server.vk2pj.dyndns.org> References: <4B066B13.1070006@freebsd.org> <4b07ac59.A2Afaf4X0IZlrgGU%perryh@pluto.rain.com> <57200BF94E69E54880C9BB1AF714BBCBA5722E@w2003s01.double-l.local> <20091121193643.GA14122@icarus.home.lan> <20091121205712.GB35595@server.vk2pj.dyndns.org> User-Agent: Wanderlust/2.15.5 (Almost Unreal) Emacs/22.3 Mule/5.0 (SAKAKI) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Cc: Johan Hendriks , freebsd-stable@freebsd.org, Jeremy Chadwick Subject: Re: 7.2 dies in zfs 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: Sat, 21 Nov 2009 23:51:40 -0000 > My understanding is that the problem is more that the FreeBSD VM > system doesn't gracefully handle running low or out of memory. to me, that's just life in the big city. the problem i think can be solved before this is let loose on the unsuspecting public is that there are really no good tools for tuning. and the wiki page does not cut it. there is not even a table of ram size vs load and good starting parms for the intersection. or "just don't risk real data with less than 2g of ram." randy