From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@freedesktop.org
Subject: [Bug 28411] New: Output polling causes latency every 10 seconds
Date: Sun,  6 Jun 2010 10:49:49 -0700 (PDT)
Message-ID: <bug-28411-502@http.bugs.freedesktop.org/>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org>
Received: from annarchy.freedesktop.org (annarchy.freedesktop.org
	[131.252.210.176])
	by gabe.freedesktop.org (Postfix) with ESMTP id 8EC809E790
	for <dri-devel@lists.freedesktop.org>;
	Sun,  6 Jun 2010 10:49:49 -0700 (PDT)
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/dri-devel>,
	<mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/dri-devel>,
	<mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org
Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org
To: dri-devel@lists.freedesktop.org
List-Id: dri-devel@lists.freedesktop.org

https://bugs.freedesktop.org/show_bug.cgi?id=28411

           Summary: Output polling causes latency every 10 seconds
           Product: DRI
           Version: DRI CVS
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: General
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: marius.groeger@web.de


The output polling in drm_crtc_helper.c added in this commit:

commit eb1f8e4f3be898df808e2dfc131099f5831d491d
Author: Dave Airlie <airlied@redhat.com>
Date:   Fri May 7 06:42:51 2010 +0000 

causes drm latencies every 10 seconds. I observed them in mythtv.

Apparently the dev->mode_config.mutex is held for too long; if I remove the
mutex_lock/unlock for testing purposes the latencies are gone.

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.