From owner-freebsd-questions@freebsd.org Wed Sep 9 15:36:32 2015 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E08F3A017D8 for ; Wed, 9 Sep 2015 15:36:32 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: from mail-wi0-x236.google.com (mail-wi0-x236.google.com [IPv6:2a00:1450:400c:c05::236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 752021A39 for ; Wed, 9 Sep 2015 15:36:32 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: by wicfx3 with SMTP id fx3so161798556wic.1 for ; Wed, 09 Sep 2015 08:36:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=sYx+FptxMvZZ7pjrEqZjFFPE924b9YZ8WNPSxnt7e+U=; b=yUvcSt4EJN2S+WQnAndxhfBneMlc4y/dGYNRtOGYLX2VrAjq1CchwvwLyCMIVCTHZZ IpoDiz8faSXA7zCes2Xf7LedgVEkP8uQTPpojKzkKaoOMqZO7FRk7YXh5wr+z2mwl/Yb Ea3qF89Ihk65zAeIe5M13sUbzePgutTngqch2bYop4EUNAdFtVqlhC0donsDQieoGz+L 3AdkMxfzRLJCpk0GkAvuuEcVaNkGjGM0bER+v1wCLm//qBX/xGP9fLrkqf/24RLiAH9P hmvtInaqP8zMslRYpv4HuXEsdJ8clNaFXAl5xjTNHbl7xfKVUO2ZPUkSa5NwTPSma+5G k3wQ== MIME-Version: 1.0 X-Received: by 10.194.158.234 with SMTP id wx10mr30194662wjb.120.1441812990464; Wed, 09 Sep 2015 08:36:30 -0700 (PDT) Received: by 10.194.67.5 with HTTP; Wed, 9 Sep 2015 08:36:30 -0700 (PDT) In-Reply-To: <55F04D78.8070508@hiwaay.net> References: <55EF3D23.5060009@hiwaay.net> <20150908220639.20412cbd@gumby.homeunix.com> <55EF5409.8020007@yahoo.com> <55EFC2DA.3020101@hiwaay.net> <08B351DD-AA48-4F30-B0D6-C500D0877FB3@lafn.org> <55F02DC8.7000706@hiwaay.net> <20150909150626.5c3b99e5.freebsd@edvax.de> <55F031A0.40500@hiwaay.net> <20150909145820.c3b48aafad4f70553c1c1fd8@sohara.org> <55F0451A.5080709@hiwaay.net> <20150909160005.d3b84775c3d0748014a871e5@sohara.org> <55F04D78.8070508@hiwaay.net> Date: Wed, 9 Sep 2015 10:36:30 -0500 Message-ID: Subject: Re: Storage question From: Adam Vande More To: "William A. Mahaffey III" Cc: FreeBSD Questions Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Sep 2015 15:36:33 -0000 On Wed, Sep 9, 2015 at 10:15 AM, William A. Mahaffey III wrote: > The online docs all seem to show swap within the zpool as well, does that > work OK, performance wise ? > I know they don't all say that except for perhaps "don't do it". Having a file backed swap on ZFS(or really any FS) or a ZVOL backed swap is a bad idea doomed from the start. It'll work just fine as long as there is no memory pressure and will collapse under severe pressure. -- Adam