From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CF950C43217 for ; Tue, 18 Jan 2022 09:54:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234810AbiARJyQ (ORCPT ); Tue, 18 Jan 2022 04:54:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49740 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229825AbiARJyN (ORCPT ); Tue, 18 Jan 2022 04:54:13 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 28BE7C06173E for ; Tue, 18 Jan 2022 01:54:13 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id DF910B812A9 for ; Tue, 18 Jan 2022 09:54:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 7F7A3C340E5 for ; Tue, 18 Jan 2022 09:54:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642499650; bh=PlUVjzFkehk1kAzxDRLpxTuTPRSQviXiKRzeaCxZe3c=; h=From:To:Subject:Date:In-Reply-To:References:From; b=CpIuEv0IEiS9DsFJgINHCojNWhuZFTnB18hQr7DCmnjwN2yP6UY4qp02DD565CKUb yMF/sHUfiha1pa5QXfAP4Te8z4SKpo8ys7mwHyIVILO46/VQqrdYjoSFARuuCsH+cP +jqoG0K3l5ri9B8sCWMejFHMYSZFHheFUMCkMOdMA8TZfR4p3xQF+T5gxZwcbgQq0A ibwtSnFYphHaWUpYi1/AeHtFcqgin+GQiIVFkbL4TWYkddIbUCoHjW6ABBRMu2KZrJ RrM615WyhylegKlAk3WdPUtNYGoxTeVwsV8hZgDEB6E/N0Wf2j/hVvN+G59HTAQBA1 Hc4XZaF/psLfg== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 64E95CC13AF; Tue, 18 Jan 2022 09:54:10 +0000 (UTC) From: bugzilla-daemon@bugzilla.kernel.org To: linux-pm@vger.kernel.org Subject: [Bug 215135] proposed cpufreq driver amd-pstate regresses wrt acpi-cpufreq on some AMD EPYC Zen3 Date: Tue, 18 Jan 2022 09:54:10 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Power Management X-Bugzilla-Component: cpufreq X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jinzhou.su@amd.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: linux-pm@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D215135 Joe (jinzhou.su@amd.com) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jinzhou.su@amd.com --- Comment #2 from Joe (jinzhou.su@amd.com) --- Hello Giovanni, Thanks for testing AMD Pstate driver. Finally we have set up the same devic= e on our local, here is the lscpu info: Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 256 On-line CPU(s) list: 0-255 Thread(s) per core: 2 Core(s) per socket: 64 Socket(s): 2 NUMA node(s): 2 Vendor ID: AuthenticAMD CPU family: 25 Model: 1 Here is the tbench test result. acpi-cpufreq-ondemand 17628 MB/sec ( 1.00) acpi-cpufreq-perfgov 25317 MB/sec ( 1.43) acpi-cpufreq-sugov 21369 MB/sec ( 1.21) amd-pstate-ondemand 17913 MB/sec ( 1.02) amd-pstate-perfgov 25865 MB/sec ( 1.47) amd-pstate-sugov 22359 MB/sec ( 1.26) >From our site of view, amd-pstate performs slight better acpi driver in Tbench4. The test based on 50 times test in each policy. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=