[Bug 29972] New: d-r-t /r6xx+: use new style fencing (v2) causes very poor gl perf.

[Bug 29972] New: d-r-t /r6xx+: use new style fencing (v2) causes very poor gl perf.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29972

           Summary: d-r-t  /r6xx+: use new style fencing (v2) causes very
                    poor gl perf.
           Product: Mesa
           Version: git
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/R600
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: lists@andyfurniss.entadsl.com


rv790 PCIE, current git ddx, mesa from yesterday.

Just tried today's updated d-r-t and 
/r6xx+: use new style fencing (v2)
is causing very poor gl perf eg. 1 fps in mesa demo tunnel, some demos appear
OK at first but even though they reach refresh rate they glitch for a second
after a while.

exa is also affected - it's slower drawing than the "instant" speed I am used
to eg when switching between metacity workspaces. Seamonkey scrolling with a
page with images is glitchy.

Tiling on/off makes no difference, with without last ddx commit makes no
difference.

git reset --hard d-r-t to the commit before this one is working OK.

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[Bug 29972] d-r-t /r6xx+: use new style fencing (v2) causes very poor gl perf.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29972

--- Comment #1 from Alexandre Derumier <aderumier@odiso.com> 2010-09-03 03:24:39 PDT ---
Same problem for me, on rv620 chipset.

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[Bug 29972] d-r-t /r6xx+: use new style fencing (v2) causes very poor gl perf.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29972

--- Comment #2 from Alexandre Derumier <aderumier@odiso.com> 2010-09-03 07:56:44 PDT ---
i think the problem come from the writeback patch:

other archlinux users have the same problem

https://bbs.archlinux.org/viewtopic.php?pid=820584#p820584


with radeon.no_wb=1  in boot parameter, i don't have any slowdown.

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[Bug 29972] d-r-t /r6xx+: use new style fencing (v2) causes very poor gl perf.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29972

--- Comment #3 from Andy Furniss <lists@andyfurniss.entadsl.com> 2010-09-03 09:07:05 PDT ---
(In reply to comment #2)
> i think the problem come from the writeback patch:
> 
> other archlinux users have the same problem
> 
> https://bbs.archlinux.org/viewtopic.php?pid=820584#p820584
> 
> 
> with radeon.no_wb=1  in boot parameter, i don't have any slowdown.

no_wb=1 fixes for me also.
I have no problems with wb enabled + old fencing.

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[Bug 29972] d-r-t /r6xx+: use new style fencing (v2) causes very poor gl perf.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29972

--- Comment #4 from Alex Deucher <agd5f@yahoo.com> 2010-09-04 01:53:41 PDT ---
Created an attachment (id=38420)
 View: https://bugs.freedesktop.org/attachment.cgi?id=38420
 Review: https://bugs.freedesktop.org/review?bug=29972&attachment=38420

properly enable eop int

This patch should fix the issue.  revert "drm/radeon/kms/r6xx+: use new style
fencing (v2)" and apply this one instead.

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[Bug 29972] d-r-t /r6xx+: use new style fencing (v2) causes very poor gl perf.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29972

--- Comment #5 from Andy Furniss <lists@andyfurniss.entadsl.com> 2010-09-04 04:45:32 PDT ---
(In reply to comment #4)
> Created an attachment (id=38420)
 View: https://bugs.freedesktop.org/attachment.cgi?id=38420
 Review: https://bugs.freedesktop.org/review?bug=29972&attachment=38420

> properly enable eop int
> 
> This patch should fix the issue.  revert "drm/radeon/kms/r6xx+: use new style
> fencing (v2)" and apply this one instead.

Confirmed, this fixes it for me.

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[Bug 29972] d-r-t /r6xx+: use new style fencing (v2) causes very poor gl perf.

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https://bugs.freedesktop.org/show_bug.cgi?id=29972

--- Comment #6 from Alexandre Derumier <aderumier@odiso.com> 2010-09-04 05:57:13 PDT ---
for me too, no more problem with v3 patch

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[Bug 29972] d-r-t /r6xx+: use new style fencing (v2) causes very poor gl perf.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29972

Andy Furniss <lists@andyfurniss.entadsl.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |chainsawbike@gmail.com

--- Comment #7 from Andy Furniss <lists@andyfurniss.entadsl.com> 2010-09-05 05:33:47 PDT ---
*** Bug 30025 has been marked as a duplicate of this bug. ***

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[Bug 29972] d-r-t /r6xx+: use new style fencing (v2) causes very poor gl perf.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29972

Andy Furniss <lists@andyfurniss.entadsl.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

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