From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver. Date: Wed, 24 Aug 2016 15:06:20 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2143304007==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [IPv6:2610:10:20:722:a800:ff:fe98:4b55]) by gabe.freedesktop.org (Postfix) with ESMTP id 9ACC96E8D7 for ; Wed, 24 Aug 2016 15:06:20 +0000 (UTC) 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 --===============2143304007== Content-Type: multipart/alternative; boundary="14720511800.4FbE.15546"; charset="UTF-8" --14720511800.4FbE.15546 Date: Wed, 24 Aug 2016 15:06:20 +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=3D97471 Bug ID: 97471 Summary: kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver. Product: DRI Version: unspecified Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: malcolmlewis@opensuse.org Created attachment 126008 --> https://bugs.freedesktop.org/attachment.cgi?id=3D126008&action=3Dedit System information and perf data Hi I have configured my system to use the amdgpu kernel driver (note no experimental support activated) on openSUSE Tumbleweed and running 4.8.0-rc2-3.gda13dfd-default. I did have to re-build the xf86-video-amdgpu = to add my Mullins R5 PCI-IDs. I don't see this when running the radeon driver. Reproducible: Always Steps to Reproduce: 1. Boot to Gnome desktop. 2. Set timeout for screen saver 1-15 minutes doesn't matter. 3. From a remote ssh session monitor via top and observe one cpu at ~100% w= hen screen save activates. Actual Results:=20=20 I ran the following perf command to capture some data which will add as an attachment; perf record -F 250 -g -a sleep 10 perf report Expected Results:=20=20 Not consume cpu when idle/screensaver mode. Attachment includes; 20-amdgpu.conf, dmidecode.txt, perf_data_summary.txt, 4.8.rc3.perf.data, os-release and Xorg.0.log --=20 You are receiving this mail because: You are the assignee for the bug.= --14720511800.4FbE.15546 Date: Wed, 24 Aug 2016 15:06:20 +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
Bug ID 97471
Summary kworker consumes 100% of a cpu core when screen sleeps with a= mdgpu kernel driver.
Product DRI
Version unspecified
Hardware Other
OS All
Status NEW
Severity normal
Priority medium
Component DRM/AMDgpu
Assignee dri-devel@lists.freedesktop.org
Reporter malcolmlewis@opensuse.org 

Created attachm=
ent 126008 [details]
System information and perf data

Hi
I have configured my system to use the amdgpu kernel driver (note no
experimental support activated) on openSUSE Tumbleweed and running
4.8.0-rc2-3.gda13dfd-default. I did have to re-build the xf86-video-amdgpu =
to
add my Mullins R5 PCI-IDs. I don't see this when running the radeon driver.

Reproducible: Always

Steps to Reproduce:
1. Boot to Gnome desktop.
2. Set timeout for screen saver 1-15 minutes doesn't matter.
3. From a remote ssh session monitor via top and observe one cpu at ~100% w=
hen
screen save activates.

Actual Results:=20=20
I ran the following perf command to capture some data which will add as an
attachment;

perf record -F 250 -g -a sleep 10
perf report

Expected Results:=20=20
Not consume cpu when idle/screensaver mode.

Attachment includes;
20-amdgpu.conf, dmidecode.txt, perf_data_summary.txt, 4.8.rc3.perf.data,
os-release and Xorg.0.log

You are receiving this mail because:
  • You are the assignee for the bug.
= --14720511800.4FbE.15546-- --===============2143304007== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVs IG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlz dHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVsCg== --===============2143304007==--