From owner-freebsd-questions@FreeBSD.ORG Wed Sep 9 15:41:10 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4C4D51065676 for ; Wed, 9 Sep 2009 15:41:10 +0000 (UTC) (envelope-from psteele@maxiscale.com) Received: from server505.appriver.com (server505b.appriver.com [98.129.35.5]) by mx1.freebsd.org (Postfix) with ESMTP id 0E4F48FC24 for ; Wed, 9 Sep 2009 15:41:09 +0000 (UTC) X-Policy: GLOBAL - maxiscale.com X-Primary: psteele@maxiscale.com X-Note: This Email was scanned by AppRiver SecureTide X-ALLOW: psteele@maxiscale.com ALLOWED X-Virus-Scan: V- X-Note: Spam Tests Failed: X-Country-Path: UNITED STATES->UNITED STATES->UNITED STATES X-Note-Sending-IP: 98.129.23.15 X-Note-Reverse-DNS: ht02.exg5.exghost.com X-Note-WHTLIST: psteele@maxiscale.com X-Note: User Rule Hits: X-Note: Global Rule Hits: 111 112 113 114 118 119 130 214 X-Note: Mail Class: ALLOWEDSENDER X-Note: Headers Injected Received: from [98.129.23.15] (HELO ht02.exg5.exghost.com) by server505.appriver.com (CommuniGate Pro SMTP 5.2.14) with ESMTPS id 8995840 for freebsd-questions@freebsd.org; Wed, 09 Sep 2009 10:41:08 -0500 Received: from mbx03.exg5.exghost.com ([169.254.1.239]) by ht02.exg5.exghost.com ([98.129.23.15]) with mapi; Wed, 9 Sep 2009 10:41:08 -0500 From: Peter Steele To: "freebsd-questions@freebsd.org" Date: Wed, 9 Sep 2009 10:40:32 -0500 Thread-Topic: Using mdconfig for swap space Thread-Index: AcoxX+Wpx6soN7gaQ2eyYuc8j3ftkwAA2hUQ Message-ID: <7B9397B189EB6E46A5EE7B4C8A4BB7CB3037EC89@MBX03.exg5.exghost.com> References: <7B9397B189EB6E46A5EE7B4C8A4BB7CB3037EBB7@MBX03.exg5.exghost.com> <20090908235259.GB19173@gizmo.acns.msu.edu> <20090909105707.GA27941@torus.slightlystrange.org> <7B9397B189EB6E46A5EE7B4C8A4BB7CB3037EC0A@MBX03.exg5.exghost.com> <20090909165005.089ae704@suszko.eu> <7B9397B189EB6E46A5EE7B4C8A4BB7CB3037EC62@MBX03.exg5.exghost.com> <441vmgw3td.fsf@be-well.ilk.org> In-Reply-To: <441vmgw3td.fsf@be-well.ilk.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: RE: Using mdconfig for swap space X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Sep 2009 15:41:10 -0000 >It's easy to *try* the swap files. Then measure the performance. =20 >If the behaviour is really as specific to your custom application as you i= ndicate, then general advice may not apply either. In fact, after discussing this with the team, we are going to do exactly th= at. We'll allocate an extra 8GB of swap space through an image file and let= QA run their stress tests to see how things behave. That's the only way to= know for sure if this will work for us. Thanks for the feedback. Peter