From owner-freebsd-current@freebsd.org Tue May 30 12:28:50 2017 Return-Path: Delivered-To: freebsd-current@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 7DA90B7BCE6 for ; Tue, 30 May 2017 12:28:50 +0000 (UTC) (envelope-from rmacklem@uoguelph.ca) Received: from CAN01-QB1-obe.outbound.protection.outlook.com (mail-eopbgr660078.outbound.protection.outlook.com [40.107.66.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (Client CN "mail.protection.outlook.com", Issuer "Microsoft IT SSL SHA2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 2CB0684040 for ; Tue, 30 May 2017 12:28:49 +0000 (UTC) (envelope-from rmacklem@uoguelph.ca) Received: from YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM (10.165.218.133) by YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM (10.165.218.133) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1124.9; Tue, 30 May 2017 12:28:47 +0000 Received: from YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM ([10.165.218.133]) by YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM ([10.165.218.133]) with mapi id 15.01.1124.016; Tue, 30 May 2017 12:28:47 +0000 From: Rick Macklem To: "freebsd-current@freebsd.org" Subject: patch that makes max buffer cache block size tunable for review Thread-Topic: patch that makes max buffer cache block size tunable for review Thread-Index: AQHS2UAIoDTGzgNSjUW2F1Ji7nd3zA== Date: Tue, 30 May 2017 12:28:47 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: freebsd.org; dkim=none (message not signed) header.d=none;freebsd.org; dmarc=none action=none header.from=uoguelph.ca; x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1; YTXPR01MB0189; 7:CNsUomLXFZxONW/oiJ1zsKomOrlOW9DYkIcnj683JDP7rjopcvOvePnTZqGwsQ3HBEWqsSBj5f4sJjmws3COG2FWn61X1UgGfGU+8ov81k7mWF6yNe/Y+X5wUwJRxuC5q51pzdzLPFwDKXQr2OrhVWlePPGCSWjPCr25SjJGLxzOf1IGHlGFhshEwGznsIChXz6107hRu5woe+zI8V+ojPPOs2rH8U/H1U1AupTKau9IX/WDgE+A6zj+K6/p90YvfqXNVVK/qrcV/KgD/WzPP9wfID14PIMiocIyWIq64ZG2MnhZP8L3x+8bjty9TUm79LzCtoCbEeFRM2D3kG2fRg== x-ms-traffictypediagnostic: YTXPR01MB0189: x-ms-office365-filtering-correlation-id: fac6dea3-3960-49d2-c746-08d4a7576b7e x-microsoft-antispam: UriScan:; BCL:0; PCL:0; RULEID:(22001)(2017030254075)(201703131423075)(201703031133081); SRVR:YTXPR01MB0189; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(6040450)(2401047)(5005006)(8121501046)(93006095)(93001095)(10201501046)(3002001)(6041248)(20161123562025)(201703131423075)(201702281529075)(201702281528075)(201703061421075)(201703061406153)(20161123560025)(20161123555025)(20161123564025)(20161123558100)(6072148); SRVR:YTXPR01MB0189; BCL:0; PCL:0; RULEID:; SRVR:YTXPR01MB0189; x-forefront-prvs: 032334F434 x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(6009001)(39400400002)(39450400003)(39850400002)(39840400002)(39410400002)(52254002)(54356999)(8676002)(81166006)(38730400002)(50986999)(6306002)(9686003)(6506006)(74316002)(8936002)(6436002)(5660300001)(74482002)(5640700003)(25786009)(6916009)(7696004)(53936002)(77096006)(55016002)(122556002)(33656002)(14454004)(110136004)(86362001)(2906002)(189998001)(966005)(3660700001)(2351001)(2900100001)(478600001)(3280700002)(102836003)(305945005); DIR:OUT; SFP:1101; SCL:1; SRVR:YTXPR01MB0189; H:YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM; FPR:; SPF:None; MLV:sfv; LANG:en; spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: uoguelph.ca X-MS-Exchange-CrossTenant-originalarrivaltime: 30 May 2017 12:28:47.2765 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: be62a12b-2cad-49a1-a5fa-85f4f3156a7d X-MS-Exchange-Transport-CrossTenantHeadersStamped: YTXPR01MB0189 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 May 2017 12:28:50 -0000 Hi, I just put a patch here: https://reviews.freebsd.org/D10991 that makes the maximum size of a buffer cache block a tunable. This allows the NFS client to use larger I/O sized RPCs. By default, the NFS client will use the largest I/O size possible. What is actually in use can be checked via "nfsstat -m". Anyone interested in reviewing and/or testing this, please do so, rick=