From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 111987] Unstable performance (periodic and repeating patterns of fps change) and changing VDDGFX Date: Thu, 17 Oct 2019 13:06:57 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0095981143==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id AA3E16EA75 for ; Thu, 17 Oct 2019 13:06:57 +0000 (UTC) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0095981143== Content-Type: multipart/alternative; boundary="15713176171.Cc58edFb.14896" Content-Transfer-Encoding: 7bit --15713176171.Cc58edFb.14896 Date: Thu, 17 Oct 2019 13:06:57 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D111987 --- Comment #14 from Alex Deucher --- You can force the clocks low or high by: echo low > power_dpm_force_performance_level or echo high > power_dpm_force_performance_level setting it to auto will restore the automatic behavior: echo auto > power_dpm_force_performance_level The behavior will depend on the workload. If the workload is really bursty= , it may cause the clocks to ramp up and down if there are sufficiently long idle periods between workloads. You can manually adjust the heuristics by selec= ting the custom profile and tweaking each parameter. See the documentation here: https://dri.freedesktop.org/docs/drm/gpu/amdgpu.html#gpu-power-thermal-cont= rols-and-monitoring --=20 You are receiving this mail because: You are the assignee for the bug.= --15713176171.Cc58edFb.14896 Date: Thu, 17 Oct 2019 13:06:57 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated

Comme= nt # 14 on bug 11198= 7 from Alex Deucher 
You can force the clocks low or high by:
echo low > power_dpm_force_performance_level
or
echo high > power_dpm_force_performance_level
setting it to auto will restore the automatic behavior:
echo auto > power_dpm_force_performance_level

The behavior will depend on the workload.  If the workload is really bursty=
, it
may cause the clocks to ramp up and down if there are sufficiently long idle
periods between workloads.  You can manually adjust the heuristics by selec=
ting
the custom profile and tweaking each parameter.  See the documentation here:
https://dri.freedesktop.org/docs/drm/gpu/am=
dgpu.html#gpu-power-thermal-controls-and-monitoring

You are receiving this mail because:
  • You are the assignee for the bug.
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