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 B2DD6CE79D0 for ; Wed, 20 Sep 2023 13:15:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234789AbjITNPn (ORCPT ); Wed, 20 Sep 2023 09:15:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52564 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234731AbjITNPl (ORCPT ); Wed, 20 Sep 2023 09:15:41 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5E73AB9 for ; Wed, 20 Sep 2023 06:15:32 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPS id 05F97C433C9 for ; Wed, 20 Sep 2023 13:15:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695215732; bh=naD1jth9r9VNN4nZsjIDudZxZ9w7U7o7xfY9yO9sWKo=; h=From:To:Subject:Date:In-Reply-To:References:From; b=sSVyGAm2WPIefkWcgzb4tfSOc4McHHYotO7og3rE+elsBL6tOPhxYCxGttW06fWkh yVqQymHo3GlqGsRORKqr0VEifhAbfNf0wMnJm/c9VUerRD6yHjNWtHmWKALhzmT7nl NiJ16EbcgQt4qNJ6E+/urzJKd7/0xDla/+BXnztzXgTqbABghPzthfd8jErGB6C3dB BkJA6TMqmOYONOWMBprRT1RuQUJN61VS/7uEB4pwpQ/cCJAC7QSMFEqTGt38nkzWGR SFfT1kpik2kOVPqif8w+ddc2TgmrNVP6rt7LaFMTM5jzwEwyym0+3s+pB93aKUYT8u wJsnC2HCLWYdQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id E0749C53BC6; Wed, 20 Sep 2023 13:15:31 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-pm@vger.kernel.org Subject: [Bug 217931] amd-pstate lacks crucial features: CPU frequency and boost control Date: Wed, 20 Sep 2023 13:15:31 +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: high X-Bugzilla-Who: bagasdotme@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: linux-pm@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: 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=3D217931 --- Comment #2 from Bagas Sanjaya (bagasdotme@gmail.com) --- On Wed, Sep 20, 2023 at 11:06:51AM +0000, bugzilla-daemon@kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=3D217931 >=20 > Bug ID: 217931 > Summary: amd-pstate lacks crucial features: CPU frequency and > boost control > Product: Power Management > Version: 2.5 > Hardware: AMD > OS: Linux > Status: NEW > Severity: high > Priority: P3 > Component: cpufreq > Assignee: linux-pm@vger.kernel.org > Reporter: aros@gmx.com > Regression: No >=20 > Created attachment 305131 > --> https://bugzilla.kernel.org/attachment.cgi?id=3D305131&action=3Dedit > Power Options: Processor Power Management in Windows >=20 > It would be really great if amd-pstate had a feature parity with > acpi-cpufreq, > namely >=20 > 1) Being able to set operating frequencies (maximum, minimum and > user-defined) ondemand, conservative, performance? >=20 > 2) Being able to enable/disable boost What is boost? >=20 > Currently both features are not available and frequency control is simply > ignored (bug 215800). >=20 > Rationale: >=20 > 1) This is required for benchmarking and proper temperature control. Boost > frequencies are subject to multiple limitations (power in watts, amperage, > voltage, temperature, BIOS limitations) and can change depending on the > workload. Setting a low enough frequency allows to run benchmarks in the > controlled environment and get proper data. >=20 > Windows allows to do that easily, see the attached screenshot. >=20 > 2) Disabling boost is an easy option to subdue operating temperatures tho= ugh > if > the previous issue is tackled, it's not really needed. For example, after compiling the kernel one needs to cool down system, right? --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=