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Sat, 7 Oct 2023 05:46:41 +0000 From: Peng Liu Cc: lenb@kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, liupeng17@lenovo.com Subject: [PATCH] tools/power turbostat: Fix Bzy_MHz calculation equation Date: Sat, 7 Oct 2023 13:46:22 +0800 Message-ID: X-Mailer: git-send-email 2.34.1 X-TMN: [LV7Ejps8Hu+n/JQFxh+TNoEFsB63bNly] X-ClientProxiedBy: SG2PR04CA0170.apcprd04.prod.outlook.com (2603:1096:4::32) To TYCP286MB2146.JPNP286.PROD.OUTLOOK.COM (2603:1096:400:158::13) X-Microsoft-Original-Message-ID: <20231007054622.54613-1-pngliu@hotmail.com> MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: TYCP286MB2146:EE_|OS3P286MB2711:EE_ X-MS-Office365-Filtering-Correlation-Id: 74d0ad0d-0158-42fc-406c-08dbc6f8c754 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: sct-15-20-4755-11-msonline-outlook-05f45.templateTenant X-MS-Exchange-CrossTenant-Network-Message-Id: 74d0ad0d-0158-42fc-406c-08dbc6f8c754 X-MS-Exchange-CrossTenant-AuthSource: TYCP286MB2146.JPNP286.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Oct 2023 05:46:41.4400 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: OS3P286MB2711 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: Peng Liu To calculate Bzy_MHz, TSC_delta should multiply APERF_delta instead of dividing it. Signed-off-by: Peng Liu --- tools/power/x86/turbostat/turbostat.8 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/power/x86/turbostat/turbostat.8 b/tools/power/x86/turbostat/turbostat.8 index 8f08c3fd498d..1ba6340d3b3d 100644 --- a/tools/power/x86/turbostat/turbostat.8 +++ b/tools/power/x86/turbostat/turbostat.8 @@ -370,7 +370,7 @@ below the processor's base frequency. Busy% = MPERF_delta/TSC_delta -Bzy_MHz = TSC_delta/APERF_delta/MPERF_delta/measurement_interval +Bzy_MHz = TSC_delta*APERF_delta/MPERF_delta/measurement_interval Note that these calculations depend on TSC_delta, so they are not reliable during intervals when TSC_MHz is not running at the base frequency.