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Wed, 17 Oct 2018 15:42:34 +0000 From: "Verma, Shally" To: "Trahe, Fiona" , "Daly, Lee" CC: "Jozwiak, TomaszX" , "dev@dpdk.org" , "akhil.goyal@nxp.com" Thread-Topic: [dpdk-dev] [PATCH 2/3] app/compress-perf: add performance measurement Thread-Index: AQHUZJk28lZzGIoUx06rWRnV5/lDBqUjg5QAgAASrmA= Date: Wed, 17 Oct 2018 15:42:34 +0000 Message-ID: References: <1538400427-20164-1-git-send-email-tomaszx.jozwiak@intel.com> <1538400427-20164-3-git-send-email-tomaszx.jozwiak@intel.com> <348A99DA5F5B7549AA880327E580B4358964F1CB@IRSMSX101.ger.corp.intel.com> In-Reply-To: <348A99DA5F5B7549AA880327E580B4358964F1CB@IRSMSX101.ger.corp.intel.com> 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=Shally.Verma@cavium.com; x-originating-ip: [223.230.98.87] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1; SN6PR07MB4464; 6:Kd/qjh7tuSX3FEHsiJl+BwrXmdsXghAmdc7ZjMyoUu5qG9XoZY0GY76pMQb7ZTd9gtnBb+R9QaXbVKcxkCOQCTHeL3h+scGZ1qzTje0CkR+BZkKfHaNtz6mLPBpnWK9o0PioGUSt4o4RvMHKFdwf1mrbaDRcMyk6IWuWSWWsJbXdzUp/41VvVo89tJe8plKb/vjKI0wFENCQuW5xPj22uazr/vSw6F0IVsibvjoxxHuHwpRtpGxhH6mhjTUMUPVMXfcQqWvDQB9ODJ8g466aQX7y1Z9MXOmimGVZIjtSIuWELZe2ThdtcyzIVnaQiHfcAFR+NxbHFvazJuzHax/RCpmC+MAozwIKKuTHLElNKQco/4vx+KySr+BPYxtM45VP4FqoaOtpXxLXAkTC8UWqLplPnSEJ1rnzUaiX6FGAxn5BrsyK5BTPa7EQq0UnzZIW5GRZ2nKM2BYr77zxSxf0bg==; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: cavium.com X-MS-Exchange-CrossTenant-Network-Message-Id: 7af30c42-1896-48f3-1d50-08d634472895 X-MS-Exchange-CrossTenant-originalarrivaltime: 17 Oct 2018 15:42:34.6946 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 711e4ccf-2e9b-4bcf-a551-4094005b6194 X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR07MB4464 Subject: Re: [dpdk-dev] [PATCH 2/3] app/compress-perf: add performance measurement X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Oct 2018 15:42:37 -0000 >-----Original Message----- >From: Trahe, Fiona >Sent: 17 October 2018 20:04 >To: Daly, Lee ; Verma, Shally >Cc: Jozwiak, TomaszX ; dev@dpdk.org; akhil.goya= l@nxp.com; Trahe, Fiona >Subject: RE: [dpdk-dev] [PATCH 2/3] app/compress-perf: add performance mea= surement > >External Email > >Hi Shally, Lee, > >> -----Original Message----- >> From: Daly, Lee >> Sent: Monday, October 15, 2018 8:10 AM >> To: Verma, Shally >> Cc: Jozwiak, TomaszX ; dev@dpdk.org; Trahe, F= iona >> ; akhil.goyal@nxp.com >> Subject: RE: [dpdk-dev] [PATCH 2/3] app/compress-perf: add performance m= easurement >> >> Thanks for your input Shally see comments below. >> >> >> I will be reviewing these changes while Tomasz is out this week. >> >> > -----Original Message----- >> > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Verma, Shally >> > Sent: Friday, October 12, 2018 11:16 AM >> > To: Jozwiak, TomaszX ; dev@dpdk.org; Trahe, >> > Fiona ; akhil.goyal@nxp.com; De Lara Guarch, Pa= blo >> > >> > Cc: De@dpdk.org; Lara@dpdk.org; Guarch@dpdk.org >> > Subject: Re: [dpdk-dev] [PATCH 2/3] app/compress-perf: add performance >> > measurement >> > >/// > >> >Also, why do we need --max-num- >> > sgl-segs as an input option from user? Shouldn't input_sz and seg_sz >> > internally decide on num-segs? >> > Or is it added to serve some other different purpose? >> Will have to get back to you on this one, seems illogical to get this in= put from user, >> But I will have to do further investigation to find if there was a diffe= rent purpose. > >[Fiona] Some PMDs have a limit on how many links can be in an sgl chain, e= .g. in QAT case the >PMD allocates a pool of internal structures of a suitable size during devi= ce initialisation, this is not >a hard limit but can be configured in .config to give the user control ove= r the memory resources allocated. >This perf-tool max-num-sgl-segs is so the user can pick a value <=3D whate= ver the PMD's max is. Then also, I believe this could be taken care internally by an app. App can choose convenient number of sgl segs as per PMD capability and inpu= t sz and chunk sz selected by user. Just my thoughts.