Saturday, December 28, 2024

Re: qutebrowser-3.3.1p1 high CPU usage

On 2024/12/26 16:35, Marco van Hulten wrote:
> Recently qutebrowser was updated to include QtWebEngine 6, which was
> something I was looking forward to as now fewer web sites break compared
> with QtWebEngine 5.
>
> However, qutebrowser is now using about 175% CPU continuously on my
> system, even with no web pages loaded. This results in a fast-blowing
> laptop fan all the time, which is annoying.
>
> Could there be an OpenBSD-/port-specific reason for this, or should I
> report this upstream?
>
> In the many upstream reported issues [1] I found at least one report of
> high CPU usage with many tabs open, but none without any web pages
> loaded.
>
> I am running current.
>
> Marco
>
> [1]: https://github.com/qutebrowser/qutebrowser/issues
>

I see it but no idea about a root cause.

I think it must be on the qtwebengine side of things; the same
occurs with konqueror.

If I force qt5 ("qutebrowser --qt-wrapper PyQt5" and make sure
py3-qt5/py3-qtwebengine are installed; config/runtime dir may need
cleaning if switching between them) then cpu use is a bit high
but not nearly as bad as with qt6webengine.

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