[webkit-gtk] WPEWebKit goes half speed

[Andrea Giammarchi]

Dear all,
  I have finally solved the problem, or better, Zan found what was causing
the performance drop, and turned out ICU was constantly querying the FS in
search for /etc/localtime which, if not present, was causing a lot of back
and forth, degrading performance.

The solution, which has been updated in my ArchLinux kiosk installer for
the Pi, was to use timedatectl [1] and be sure such a symlink was there.

sudo timedatectl set-timezone "$(curl --fail https://ipapi.co/timezone)"

Thanks to Zan in particular, and thanks to this ML too.

Have a lovely weekend ��

[1]
https://wiki.archlinux.org/title/System_time#Update_timezone_every_time_NetworkManager_connects_to_a_network


On Mon, Aug 9, 2021 at 3:48 PM <zan at falconsigh.net> wrote:

> On Sun, Aug 8, 2021, at 11:11 AM, Andrea Giammarchi wrote:
>
> cog 0.6 and 2.28 (IIRC) were just fine ... the raspbian image from the
> wpewebkit site, which has cog 0.6, goes, on the same hardware, more than
> twice as fast.
>
> Meanwhile, weston 9 happened, mesa brought GLES 3.1 in the game, so it's
> hard to tell, in isolation, what is causing such drop, but I guess there's
> nothing bad in the way I build WPEWebKit there, right?
>
> Thanks for the reply though.
>
>
> No, you build it just fine.
>
> Removal of ACCELERATED_2D_CANVAS option shouldn't have any effect on WebGL
> content. It was only ever used for 2D canvas, and even there it had varying
> performance with stability/quality problems. I don't know what the state of
> it was in 2.28 but when I was removing the feature it wasn't really working
> anyway.
>
> On Wed, Aug 4, 2021 at 9:58 PM Fujii Hironori <fujii.hironori at gmail.com>
> wrote:
>
>
> On Tue, Aug 3, 2021 at 6:57 PM Andrea Giammarchi <
> andrea.giammarchi at gmail.com> wrote:
>
> Dear list,
>   I've recently built wpewebkit 2.32.3 [1] and cog 0.10 [2] and it
> starts/runs fine on weston in both Pi 4 32bit, Pi4 64bit, and Pi3 64bit.
>
> However, the jellyfish demo [3] that once run at ~60fps [4] is now ~24FPS
> on Pi 4, and ~15FPS on Pi 3. I am not using dedicated cairo glesv2 builds,
> just regular cairo, latest mesa drivers, vulkan, and so on.
>
>
>  Which version was previously working fine?
>
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