From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755316AbcKJNBD (ORCPT ); Thu, 10 Nov 2016 08:01:03 -0500 Received: from mail-db5eur01on0066.outbound.protection.outlook.com ([104.47.2.66]:14976 "EHLO EUR01-DB5-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752528AbcKJNBA (ORCPT ); Thu, 10 Nov 2016 08:01:00 -0500 From: Noam Camus To: Daniel Lezcano CC: "robh+dt@kernel.org" , "mark.rutland@arm.com" , "tglx@linutronix.de" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Vineet Gupta Subject: RE: [PATCH v2 3/3] clocksource: Add clockevent support to NPS400 driver Thread-Topic: [PATCH v2 3/3] clocksource: Add clockevent support to NPS400 driver Thread-Index: AQHSLSbhhwuh/RDro0OnUw+cihxCf6DCb4uAgABKgfCAAeEsgIAKPV/AgANJEwCAACftEA== Date: Thu, 10 Nov 2016 13:00:57 +0000 Message-ID: References: <1477224748-25223-1-git-send-email-noamca@mellanox.com> <1477224748-25223-4-git-send-email-noamca@mellanox.com> <20161031105251.GD1506@mai> <20161101200141.GF1506@mai> <1850b6f7-3901-1065-5f35-d738f76fb218@linaro.org> In-Reply-To: <1850b6f7-3901-1065-5f35-d738f76fb218@linaro.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=noamca@mellanox.com; x-originating-ip: [212.179.42.66] x-microsoft-exchange-diagnostics: 1;DB6PR0501MB2519;7:3Y19sYbGdgqJzhVEFKXyqeCiDz143pzI58xagRo8f7jeRCXCNwB2cVZgDvJLW0mWe7nd7x4L60RxM1G1fk00jgDUFlvvHwwSkmWV319gqf7EiI1NZwW5Vfj/FyO8jafQKNmTX6Pzsztu8UUP6hqPMAzyKqJIKCuEdYTsF3MlJ3xHY+d0rkNgA2RwL0fzfdXb/gkw4L2UjAL7kIQ3+UGLCBRpzYWztEJJMUCXUclrsmeuRyRH1ntqOqZEiaOsGtILbEZ6mzsDy/TGyRQZU1L1hNAeoXfH/EO5O4Bc07jV1o86EjHBsJn+zXL+quTRr6CJpNjBMNJJOuCfgpC7SWU0YKKMSn38HLAMZBnCj3IcSa8= x-ms-office365-filtering-correlation-id: eae816ff-8d4b-437f-aa6d-08d409699d31 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(22001);SRVR:DB6PR0501MB2519; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(6040176)(601004)(2401047)(8121501046)(5005006)(3002001)(10201501046)(6055026);SRVR:DB6PR0501MB2519;BCL:0;PCL:0;RULEID:;SRVR:DB6PR0501MB2519; x-forefront-prvs: 01221E3973 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(6009001)(7916002)(199003)(377454003)(189002)(4326007)(7846002)(7736002)(189998001)(66066001)(3846002)(6116002)(74316002)(102836003)(97736004)(586003)(81166006)(86362001)(106116001)(6916009)(2950100002)(3280700002)(81156014)(76576001)(229853002)(106356001)(3660700001)(305945005)(105586002)(8676002)(9686002)(93886004)(110136003)(101416001)(5660300001)(33656002)(7696004)(8936002)(54356999)(50986999)(76176999)(2900100001)(77096005)(87936001)(2906002)(68736007)(92566002)(122556002)(47845001);DIR:OUT;SFP:1101;SCL:1;SRVR:DB6PR0501MB2519;H:DB6PR0501MB2518.eurprd05.prod.outlook.com;FPR:;SPF:None;PTR:InfoNoRecords;A:1;MX:1;LANG:en; spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-originalarrivaltime: 10 Nov 2016 13:00:57.8485 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6PR0501MB2519 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id uAAD175K023112 >From: Daniel Lezcano [mailto:daniel.lezcano@linaro.org] >Sent: Thursday, November 10, 2016 12:34 PM >>> give a correct result without a dmesg log ? >> [root@192.168.8.2 /]$ [root@192.168.8.2 /]$ taskset 65536 time sleep 2 >> & taskset 131072 time sleep 3 >Thanks for providing the numbers. >So there is no weird messages in dmesg ? Yes, no weird messages, all seem normal. >> real 0m 2.54s >> user 0m 0.04s >> sys 0m 0.14s >> real 0m 3.47s >> user 0m 0.00s >> sys 0m 0.15s >> [1]+ Done taskset 65536 time sleep 2 >> >> Seem OK to me. >I'm not sure of that. >2.54 instead of 2 >3.47 instead of 3 >0.02 time drift could be acceptable but 0.54 or 0.47 is too much. >And 0.15 in sys also a big number AFAICT. >Is the system in NO_HZ ? We are handling system with NOHZ_FULL This was run under simulation and result are reasonable (indeed not perfect) AFAICT. -Noam