From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 106175] amdgpu.dc=1 shows performance issues with Xorg compositors when moving windows Date: Mon, 19 Nov 2018 01:28:24 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0885522247==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id E70AA89BDB for ; Mon, 19 Nov 2018 01:28:24 +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 --===============0885522247== Content-Type: multipart/alternative; boundary="15425909043.8de6C.19980" Content-Transfer-Encoding: 7bit --15425909043.8de6C.19980 Date: Mon, 19 Nov 2018 01:28:24 +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=3D106175 --- Comment #43 from bmilreu@gmail.com --- (In reply to Brandon Wright from comment #42) > This is pretty serious. Just moving the mouse cursor around while somethi= ng > slightly GPU-heavy is running at 60hz can produce frame-skipping. >=20 > I switched the display core off with amdgpu.dc=3D0 and everything got > significantly smoother and chromium doesn't chug on heavy pages any more. >=20 > I'm using 4.19.x. I haven't tried the drm-next-4.21-wip tree yet. Dont need to try drm-next-4.21-wip, just did and it still has the issue If devs want an easy test case, use these links for reproducing it in chrom= ium: https://www.vsynctester.com/ https://www.testufo.com/photo https://www.slither.io move the cursor around, move/resize some windows. you will notice it the vsync/cursor stutters and frame-skips are pretty noticeable with dc=3D1= on all three links KWin, compton, TearFree, mutter, xfwm4 all have the same problems. --=20 You are receiving this mail because: You are the assignee for the bug.= --15425909043.8de6C.19980 Date: Mon, 19 Nov 2018 01:28:24 +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 # 43 on bug 10617= 5 from bmilreu@gmail.co= m 
(In reply to Brandon Wright from comment #42)
> This is pretty serious. Just moving the mouse cu=
rsor around while something
> slightly GPU-heavy is running at 60hz can produce frame-skipping.
>=20
> I switched the display core off with amdgpu.dc=3D0 and everything got
> significantly smoother and chromium doesn't chug on heavy pages any mo=
re.
>=20
> I'm using 4.19.x. I haven't tried the drm-next-4.21-wip tree yet.
Dont need to try drm-next-4.21-wip, just did and it still has the issue

If devs want an easy test case, use these links for reproducing it in chrom=
ium:

https://www.vsynctester.com/
https://www.testufo.com/photo
https://www.slither.io

move the cursor around, move/resize some windows. you will notice it

the vsync/cursor stutters and frame-skips are pretty noticeable with dc=3D1=
 on
all three links

KWin, compton, TearFree, mutter, xfwm4 all have the same problems.

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