From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Clifton <pcjc2@cam.ac.uk>
Subject: i915_gem_evict_something in sysprof trace using VBOs
Date: Fri, 05 Nov 2010 10:21:07 +0000
Message-ID: <1288952467.24411.44.camel@pcjc2lap>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org>
Received: from ppsw-41.csi.cam.ac.uk (ppsw-41.csi.cam.ac.uk [131.111.8.141])
	by gabe.freedesktop.org (Postfix) with ESMTP id 34A4F9E760
	for <intel-gfx@lists.freedesktop.org>;
	Fri,  5 Nov 2010 03:21:10 -0700 (PDT)
Received: from client-82-26-201-5.pete.adsl.virginmedia.com
	([82.26.201.5]:13796 helo=[192.168.1.2])
	by ppsw-41.csi.cam.ac.uk (smtp.hermes.cam.ac.uk [131.111.8.156]:465)
	with esmtpsa (LOGIN:pcjc2) (SSLv3:DHE-RSA-CAMELLIA256-SHA:256)
	id 1PEJPw-0007LP-SK (Exim 4.72) for intel-gfx@lists.freedesktop.org
	(return-path <pcjc2@cam.ac.uk>); Fri, 05 Nov 2010 10:21:08 +0000
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/intel-gfx>,
	<mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
	<mailto:intel-gfx-request@lists.freedesktop.org?subject=subscribe>
Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org
Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org
To: "intel-gfx@lists.freedesktop.org" <intel-gfx@lists.freedesktop.org>
List-Id: intel-gfx@lists.freedesktop.org

I was playing with my VBO code, and noticed this sysprof trace
(non-interesting stuff pruned):

drm_ioctl                                         0.13%  56.08%
  i915_gem_execbuffer2                            0.00%  32.50%
    i915_gem_do_execbuffer                        0.08%  32.50%
      i915_gem_object_pin                         0.00%  17.47%
        i915_gem_object_bind_to_gtt               0.03%  17.44%
          i915_gem_evict_something                0.00%  15.54%
            i915_gem_object_unbind                0.00%  15.31%
              i915_gem_object_set_to_cpu_domain   0.00%  13.33%
                i915_gem_clflush_object           0.00%  13.33%
      i915_gem_clflush_object                     0.00%  14.29%
  i915_gem_mmap_gtt_ioctl                         0.00%  10.74%
  i915_gem_set_domain_ioctl                       0.00%   4.98%


The i915_gem_evict_something has me curious. Presumably I have too many
pages of data actively being used by the GPU (or mapped).

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)
Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)