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From: Sylvain Hubert <champignoom@gmail.com>
Newsgroups: gmane.comp.tex.context
Subject: Re: Bug: context/mtxrun makes Firefox eat up cpu
Date: Fri, 30 Oct 2020 19:44:20 +0100
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> You could test that theory by switching to a text terminal for running
the =E2=80=98context=E2=80=99 command (assuming the text-only terminal is s=
till accessible
in Manjaro) and see whether the output of =E2=80=98context =E2=80=94help=E2=
=80=99 causes lag there
as well.

If I understand you correctly, here's what I've tried:
1. open firefox, open no webpages, so there's only one about:blank
2. ctrl+alt+2, login, `context --help`
3. (in the text interface) `htop`, firefox cpu usage rises to 100% after
~1s.


On Fri, 30 Oct 2020 at 10:07, Taco Hoekwater <taco@elvenkind.com> wrote:

>
>
> > On 30 Oct 2020, at 09:34, ntg@scorecrow.com wrote:
> >
> > Hi Sylvain,
> >
> > This bug tracker report <
> https://bugzilla.mozilla.org/show_bug.cgi?id=3D1599329> describes lagging=
 /
> freezing (which are symptoms of excessive CPU usage, of course) for
> versions of Firefox from 70 to 74 inclusive on Manjaro. They also report
> Chromium seeing the same problem.
>
> This basically says it is a bug in the video driver.
>
> You could test that theory by switching to a text terminal for running th=
e
> =E2=80=98context=E2=80=99 command (assuming the text-only terminal is sti=
ll accessible in
> Manjaro) and see whether the output of =E2=80=98context =E2=80=94help=E2=
=80=99 causes lag there as
> well. Even a really, really crappy video driver should be able to handle
> the output stream in full-screen text mode, so if it still lags in that
> environment, that moves the needle toward a problem in ConTeXt (however
> unlikely Hans and I think that is).
>
> Best wishes,
> Taco
>
> _________________________________________________________________________=
__________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
>
> _________________________________________________________________________=
__________
>

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<div dir=3D"ltr"><div>&gt; You could test that theory by switching to a tex=
t terminal for running=20
the =E2=80=98context=E2=80=99 command (assuming the text-only terminal is s=
till=20
accessible in Manjaro) and see whether the output of =E2=80=98context =E2=
=80=94help=E2=80=99=20
causes lag there as well. <br></div><div><br></div><div>If I understand you=
 correctly, here&#39;s what I&#39;ve tried:</div><div>1. open firefox, open=
 no webpages, so there&#39;s only one about:blank<br></div><div>2. ctrl+alt=
+2, login, `context --help`</div><div>3. (in the text interface) `htop`, fi=
refox cpu usage rises to 100% after ~1s.</div><div><br></div></div><br><div=
 class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, 30 Oct=
 2020 at 10:07, Taco Hoekwater &lt;<a href=3D"mailto:taco@elvenkind.com">ta=
co@elvenkind.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" =
style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);pa=
dding-left:1ex"><br>
<br>
&gt; On 30 Oct 2020, at 09:34, <a href=3D"mailto:ntg@scorecrow.com" target=
=3D"_blank">ntg@scorecrow.com</a> wrote:<br>
&gt; <br>
&gt; Hi Sylvain,<br>
&gt; <br>
&gt; This bug tracker report &lt;<a href=3D"https://bugzilla.mozilla.org/sh=
ow_bug.cgi?id=3D1599329" rel=3D"noreferrer" target=3D"_blank">https://bugzi=
lla.mozilla.org/show_bug.cgi?id=3D1599329</a>&gt; describes lagging / freez=
ing (which are symptoms of excessive CPU usage, of course) for versions of =
Firefox from 70 to 74 inclusive on Manjaro. They also report Chromium seein=
g the same problem.<br>
<br>
This basically says it is a bug in the video driver. <br>
<br>
You could test that theory by switching to a text terminal for running the =
=E2=80=98context=E2=80=99 command (assuming the text-only terminal is still=
 accessible in Manjaro) and see whether the output of =E2=80=98context =E2=
=80=94help=E2=80=99 causes lag there as well. Even a really, really crappy =
video driver should be able to handle the output stream in full-screen text=
 mode, so if it still lags in that environment, that moves the needle towar=
d a problem in ConTeXt (however unlikely Hans and I think that is).<br>
<br>
Best wishes,<br>
Taco<br>
___________________________________________________________________________=
________<br>
If your question is of interest to others as well, please add an entry to t=
he Wiki!<br>
<br>
maillist : <a href=3D"mailto:ntg-context@ntg.nl" target=3D"_blank">ntg-cont=
ext@ntg.nl</a> / <a href=3D"http://www.ntg.nl/mailman/listinfo/ntg-context"=
 rel=3D"noreferrer" target=3D"_blank">http://www.ntg.nl/mailman/listinfo/nt=
g-context</a><br>
webpage=C2=A0 : <a href=3D"http://www.pragma-ade.nl" rel=3D"noreferrer" tar=
get=3D"_blank">http://www.pragma-ade.nl</a> / <a href=3D"http://context.aan=
het.net" rel=3D"noreferrer" target=3D"_blank">http://context.aanhet.net</a>=
<br>
archive=C2=A0 : <a href=3D"https://bitbucket.org/phg/context-mirror/commits=
/" rel=3D"noreferrer" target=3D"_blank">https://bitbucket.org/phg/context-m=
irror/commits/</a><br>
wiki=C2=A0 =C2=A0 =C2=A0: <a href=3D"http://contextgarden.net" rel=3D"noref=
errer" target=3D"_blank">http://contextgarden.net</a><br>
___________________________________________________________________________=
________<br>
</blockquote></div>

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