<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=gb2312"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style></style></head><body lang=ZH-CN link=blue vlink=purple style='text-justify-trim:punctuation'><div class=WordSection1>All,<o:p></o:p>Thank for Mengmeng’s testing work, now the status is as following:<o:p></o:p><o:p> </o:p>The bug33394(performance regression: screen stuttered when running the demo of 3D games with compiz enabled without GPU semaphores) is fixed. The two issue(stutter and hangcheck) is gone, now.<o:p></o:p>The issue described as bug 36407 isn’t able to be reproduced. <o:p></o:p>The bug 36653 is still there.<o:p></o:p><o:p> </o:p>As to the performance, the detail is listed as the table.<o:p></o:p>From the table, we can get the information that the patch make little effect to the 2D performance, but it improve 3D performance much.<o:p></o:p><o:p> </o:p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=575 style='width:431.0pt;margin-left:-.75pt;border-collapse:collapse'><tr style='height:13.5pt'><td width=111 nowrap valign=bottom style='width:83.0pt;border:none;border-right:solid windowtext 1.0pt;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>　<o:p></o:p></td><td width=235 nowrap colspan=2 valign=bottom style='width:176.0pt;border:none;border-bottom:solid windowtext 1.0pt;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>without patch<o:p></o:p></td><td width=229 nowrap colspan=2 valign=bottom style='width:172.0pt;border-top:none;border-left:solid windowtext 1.0pt;border-bottom:solid windowtext 1.0pt;border-right:none;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>with patch<o:p></o:p></td></tr><tr style='height:14.25pt'><td width=111 nowrap valign=bottom style='width:83.0pt;border-top:none;border-left:none;border-bottom:double windowtext 2.25pt;border-right:solid windowtext 1.0pt;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:14.25pt'>　<o:p></o:p></td><td width=122 nowrap valign=bottom style='width:91.2pt;border:none;border-bottom:double windowtext 2.25pt;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:14.25pt'>dis-semaphores <o:p></o:p></td><td width=113 nowrap valign=bottom style='width:84.8pt;border:none;border-bottom:double windowtext 2.25pt;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:14.25pt'>en-semaphores <o:p></o:p></td><td width=119 nowrap valign=bottom style='width:89.1pt;border-top:none;border-left:solid windowtext 1.0pt;border-bottom:double windowtext 2.25pt;border-right:none;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:14.25pt'>dis-semaphores <o:p></o:p></td><td width=111 nowrap valign=bottom style='width:82.9pt;border:none;border-bottom:double windowtext 2.25pt;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:14.25pt'>en-semaphores <o:p></o:p></td></tr><tr style='height:14.25pt'><td width=111 nowrap valign=bottom style='width:83.0pt;border:none;border-right:solid windowtext 1.0pt;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:14.25pt'>2D-aa10text<o:p></o:p></td><td width=122 nowrap valign=bottom style='width:91.2pt;padding:0cm 5.4pt 0cm 5.4pt;height:14.25pt'>1790k<o:p></o:p></td><td width=113 nowrap valign=bottom style='width:84.8pt;padding:0cm 5.4pt 0cm 5.4pt;height:14.25pt'>2650k<o:p></o:p></td><td width=119 nowrap valign=bottom style='width:89.1pt;border:none;border-left:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:14.25pt'>1640k<o:p></o:p></td><td width=111 nowrap valign=bottom style='width:82.9pt;padding:0cm 5.4pt 0cm 5.4pt;height:14.25pt'>2550k<o:p></o:p></td></tr><tr style='height:13.5pt'><td width=111 nowrap valign=bottom style='width:83.0pt;border:none;border-right:solid windowtext 1.0pt;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>2D-rgb10text<o:p></o:p></td><td width=122 nowrap valign=bottom style='width:91.2pt;background:#CCCCCC;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>1380k<o:p></o:p></td><td width=113 nowrap valign=bottom style='width:84.8pt;background:#CCCCCC;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>2380k<o:p></o:p></td><td width=119 nowrap valign=bottom style='width:89.1pt;border:none;border-left:solid windowtext 1.0pt;background:#CCCCCC;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>1100k<o:p></o:p></td><td width=111 nowrap valign=bottom style='width:82.9pt;border:none;border-right:solid windowtext 1.0pt;background:#CCCCCC;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>2320k<o:p></o:p></td></tr><tr style='height:13.5pt'><td width=111 nowrap valign=bottom style='width:83.0pt;border:none;border-right:solid windowtext 1.0pt;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>openarena<o:p></o:p></td><td width=122 nowrap valign=bottom style='width:91.2pt;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>11<o:p></o:p></td><td width=113 nowrap valign=bottom style='width:84.8pt;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>86.2<o:p></o:p></td><td width=119 nowrap valign=bottom style='width:89.1pt;border:none;border-left:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>98.9<o:p></o:p></td><td width=111 nowrap valign=bottom style='width:82.9pt;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>103.9 fps<o:p></o:p></td></tr><tr style='height:13.5pt'><td width=111 nowrap valign=bottom style='width:83.0pt;border:none;border-right:solid windowtext 1.0pt;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>urbanterror<o:p></o:p></td><td width=122 nowrap valign=bottom style='width:91.2pt;background:#CCCCCC;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>10.5<o:p></o:p></td><td width=113 nowrap valign=bottom style='width:84.8pt;background:#CCCCCC;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>71.4<o:p></o:p></td><td width=119 nowrap valign=bottom style='width:89.1pt;background:#CCCCCC;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>68.5<o:p></o:p></td><td width=111 nowrap valign=bottom style='width:82.9pt;border:none;border-right:solid windowtext 1.0pt;background:#CCCCCC;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>70.9 fps<o:p></o:p></td></tr><tr style='height:13.5pt'><td width=111 nowrap valign=bottom style='width:83.0pt;border:none;border-right:solid windowtext 1.0pt;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>padman<o:p></o:p></td><td width=122 nowrap valign=bottom style='width:91.2pt;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>12.1<o:p></o:p></td><td width=113 nowrap valign=bottom style='width:84.8pt;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>100.7<o:p></o:p></td><td width=119 nowrap valign=bottom style='width:89.1pt;border:none;border-left:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>92<o:p></o:p></td><td width=111 nowrap valign=bottom style='width:82.9pt;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>100.3 fps<o:p></o:p></td></tr><tr style='height:13.5pt'><td width=111 nowrap valign=bottom style='width:83.0pt;border:none;border-right:solid windowtext 1.0pt;background:#DBE5F1;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>nexuiz<o:p></o:p></td><td width=122 nowrap valign=bottom style='width:91.2pt;background:#CCCCCC;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>6<o:p></o:p></td><td width=113 nowrap valign=bottom style='width:84.8pt;background:#CCCCCC;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>20<o:p></o:p></td><td width=119 nowrap valign=bottom style='width:89.1pt;border:none;border-left:solid windowtext 1.0pt;background:#CCCCCC;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>19.5<o:p></o:p></td><td width=111 nowrap valign=bottom style='width:82.9pt;border:none;border-right:solid windowtext 1.0pt;background:#CCCCCC;padding:0cm 5.4pt 0cm 5.4pt;height:13.5pt'>20 fps<o:p></o:p></td></tr></table><o:p> </o:p><o:p> </o:p>Thanks<o:p></o:p> --Yi,Sun<o:p></o:p><o:p> </o:p><o:p> </o:p>-----Original Message----- From: intel-gfx-bounces+yi.sun=intel.com@lists.freedesktop.org [mailto:intel-gfx-bounces+yi.sun=intel.com@lists.freedesktop.org] On Behalf Of Daniel J Blueman Sent: Wednesday, June 15, 2011 12:52 AM To: Eric Anholt Cc: Daniel J Blueman; intel-gfx@lists.freedesktop.org; linux-kernel@vger.kernel.org; Dave Airlie Subject: [Intel-gfx] [PATCH 3.0-rc3] i915: Fix gen6 (SNB) GPU stalling<o:p></o:p><o:p> </o:p>On 14 June 2011 13:23, Eric Anholt <eric@anholt.net> wrote:<o:p></o:p>> On Tue, 14 Jun 2011 12:18:36 +0800, Daniel J Blueman <daniel.blueman@gmail.com> wrote:<o:p></o:p>>> Hi Eric,<o:p></o:p>>><o:p> </o:p>>> The frequent ~1.5s pauses I hit with SNB hardware in the gnome3 UI (eg<o:p></o:p>>> whenever you hit the top-left of the screen to show all windows) are<o:p></o:p>>> nicely addressed by your recent wake patch [1] (ported to -rc3). Thus<o:p></o:p>>> I see no 'missed IRQ' kernel messages.<o:p></o:p>>><o:p> </o:p>>> As this addresses a significant usability regression, are you happy to<o:p></o:p>>> add it to the 3.0-rc queue? I think it has very good value in -stable<o:p></o:p>>> also (assuming correctness). What do you think?<o:p></o:p>><o:p> </o:p>> This one had significant performance impacts, and later hacks in this<o:p></o:p>> series worked around the problem to approximately the same level of<o:p></o:p>> success with less impact, and we don't actually have a justification of<o:p></o:p>> why any of them work. We were still hoping to come up with some clue,<o:p></o:p>> and haven't yet.<o:p></o:p><o:p> </o:p>True; that is quite heavy handed delay looping.<o:p></o:p><o:p> </o:p>It's a pity the usual Intel font didn't make it to the programmer's<o:p></o:p>reference manuals. Anyway, unmasking the blitter user interrupt in the hardware<o:p></o:p>status mask register addresses the root cause. Out of reset it's FFFFFFFFh,<o:p></o:p>so we don't need to read it here.<o:p></o:p><o:p> </o:p>It would be good to get this into -rc4. -stable probably needs some additional<o:p></o:p>tweaks.<o:p></o:p><o:p> </o:p>Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com><o:p></o:p>---<o:p></o:p> drivers/gpu/drm/i915/i915_irq.c | 6 ++++++<o:p></o:p> 1 files changed, 6 insertions(+), 0 deletions(-)<o:p></o:p><o:p> </o:p>diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c<o:p></o:p>index b9fafe3..9a98c1b 100644<o:p></o:p>--- a/drivers/gpu/drm/i915/i915_irq.c<o:p></o:p>+++ b/drivers/gpu/drm/i915/i915_irq.c<o:p></o:p>@@ -1827,6 +1827,12 @@ int ironlake_irq_postinstall(struct drm_device *dev)<o:p></o:p> ironlake_enable_display_irq(dev_priv, DE_PCU_EVENT);<o:p></o:p> }<o:p></o:p> <o:p></o:p>+ if (IS_GEN6(dev))<o:p></o:p>+ /* allow blitter user interrupt to generate a MSI write from<o:p></o:p>+ the ISR */<o:p></o:p>+ I915_WRITE(GEN6_BLITTER_HWSTAM,<o:p></o:p>+ 0xffffffff & ~GEN6_BLITTER_USER_INTERRUPT);<o:p></o:p>+<o:p></o:p> return 0;<o:p></o:p> }<o:p></o:p> <o:p></o:p>-- <o:p></o:p>1.7.4.1<o:p></o:p><o:p> </o:p>_______________________________________________<o:p></o:p>Intel-gfx mailing list<o:p></o:p>Intel-gfx@lists.freedesktop.org<o:p></o:p>http://lists.freedesktop.org/mailman/listinfo/intel-gfx<o:p></o:p></div></body></html>