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 9A4C5C433F5 for ; Thu, 28 Apr 2022 08:49:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235742AbiD1IxF (ORCPT ); Thu, 28 Apr 2022 04:53:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58620 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344298AbiD1Iw6 (ORCPT ); Thu, 28 Apr 2022 04:52:58 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BAB1FDF06 for ; Thu, 28 Apr 2022 01:49:43 -0700 (PDT) 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 4F565B82C32 for ; Thu, 28 Apr 2022 08:49:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id D2996C385B8 for ; Thu, 28 Apr 2022 08:49:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1651135780; bh=v7RJc2SB4Ep7joYv3Ebg/xA1k222+xKIlbIBHmpr2fY=; h=From:To:Subject:Date:In-Reply-To:References:From; b=D7Ssnm+/IXdRQg1wa2xU8ztzIjA1IpW5RS3z5KkJimqPUkgsCS2U5w6J/J5TY82dI 6Z5zjIRLPRUuEFFk0P4vwQACB6QlS2Yxrvucnollgz08xrqbpUlzkon/U03hRNHHay urN/RA3w1NzXeIgd2n8fBTSboaH+CMMJdGaY50oIt/gzMn6H8mmRVJ2cHax9/RYSQ3 /ouGDhfM4ZEB6WUtLTYg/J7Bvoo7V39c/nexPtn83BqECwb2qOsNAk0196HMKNdoE9 etrHGtaMlUFac28ICVH2dN550L/kQX6wtLTmkDsaLv7skL4hA8oldu+B8nsoq0S52K RyHJrdXifWGCQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id B8CF0CAC6E2; Thu, 28 Apr 2022 08:49:40 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-pm@vger.kernel.org Subject: [Bug 215729] amd-pstate driver has a much higher idle power consumption for a desktop Zen 3 CPU Date: Thu, 28 Apr 2022 08:49:40 +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: sujinzhou2008@126.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=3D215729 Joe (sujinzhou2008@126.com) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |sujinzhou2008@126.com --- Comment #8 from Joe (sujinzhou2008@126.com) --- Hello, I reproduce this issue on my local.=20=20 Your device (CPU family: 25, Model: 33) should be shared memory solution = with AMD P-state driver. Updating CPPC request with shared memory will need more energy than writing MSR register directly. We are checking this issue now. For ondemand governor, could you please try to reduce the sampling_rate and then check to energy consumption again? Thanks a lot! Here is the command=20 cd /sys/devices/system/cpu/cpufreq/ondemand echo 50000 > sampling_rate Thanks Joe --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=