[webkit-gtk] extremely slow reflow and/or painting on certain pages (due to xorg xserver 1.16?)

[Yosef Or Boczko]

Hey,

Here the bug report about this bug (DRI3 broken on intel driver):
https://bugs.freedesktop.org/show_bug.cgi?id=81623

For me, in ArchLinux, it look like it fixes.
For now, you can to run with LIBGL_DRI3_DISABLE=1 .

(I'm not sure what fixed this).

Regards,
Yosef Or Boczko

בתאריך ד', ספט 17, 2014 בשעה 2:06 PM, Adrian Perez de 
Castro <aperez at igalia.com> כתב:
> Michael Gratton <mike at vee.net> writes:
> 
>>  I'm running Ephy 3.12.1 w/ WebKitGtk 2.4.5 on the current Ubuntu 
>> GNOME
>>  beta. Recently, certain pages started updating *really* slowly, such
>>  that it takes a second or two before the effects of scrolling or key
>>  presses are seen. Duck Duck Go's search interface
>>  <https://duckduckgo.com/> and results lists are two examples. [...]
> 
> Here I also remember DuckDuckGo being sluggish for a while, but the
> thing seems to have solved itself.
> 
>>  It's hard to pin down exactly when the issue started, but I think 
>> it is
>>  related to upgrading to xorg's xserver 1.16.
> 
> I am running Xorg server version 1.16.0, so I suspect the Intel video
> driver can be a better guess, because the Intel driver and mesa got
> several updates for me in the last weeks. I am using version 2.99.916,
> so the issue must be somewhere in the versions of the Intel driver in
> between versions 2.99.910 and 2.99.916
> 
> As a recap, we have the following versions tested:
> 
>   Xorg     Intel driver  Slowness?
>   ======== ============= =========
>   1.15     2.99.910      No
>   1.16     2.99.914      Yes
>   1.16     2.99.916      No
> 
> If this is a problem caused by the driver, probably it won't be worth
> it to provide a workaround in WebKitGTK (and JFTR, it may not be even
> possible to workaround).
> 
> Cheers,
> 
> --
>  ☺ Adrian
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> webkit-gtk at lists.webkit.org
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