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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 19:48:25 +0100
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Hi Bruce,

> Could you please try their steps to reproduce - namely view a video in
Firefox - and do so from a fresh reboot without starting or invoking
ConTeXt so we can be sure that it is excluded from the equation?

Thanks for the suggestion but firefox here has never had any issue playing
a youtube video with 6 other video pages and 20 other news pages opened at
the same time, and the bug can be reproduced here with just an about:blank
and no video opened.

On Fri, 30 Oct 2020 at 09:50, <ntg@scorecrow.com> wrote:

> Hi Sylvain,
>
> This bug tracker report <
> https://bugzilla.mozilla.org/show_bug.cgi?id=1599329> 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.
>
> These symptoms seem to be very similar to yours. Could you please try
> their steps to reproduce - namely view a video in Firefox - and do so from
> a fresh reboot without starting or invoking ConTeXt so we can be sure that
> it is excluded from the equation?
>
> If you get excessive CPU usage following their steps then it is Firefox at
> fault. If you don't then it might not be - unfortunately it only narrows it
> down to a 'might'.
>
> Regards,
>
> > On 29 Oct 2020, at 11:44, Sylvain Hubert <champignoom@gmail.com> wrote:
> >
> > I've just tried chromium which behaves a bit better but still
> experiences a sudden raise of cpu usage from <10% to >70% during ~1s.
> > I've also noticed that, even without any browser running, each time
> after I compile a file with `context`, my terminal get stuck for ~1s.
> > So I'm pretty sure this is a context bug, probably caused by unnecessary
> excessive disk operations or something.
> >
> > On Thu, 29 Oct 2020 at 12:33, Taco Hoekwater <taco@elvenkind.com> wrote:
> >
> >
> > > On 29 Oct 2020, at 12:19, Sylvain Hubert <champignoom@gmail.com>
> wrote:
> > >
> > > And using safe mode here is just to make sure that the problem is not
> caused by extensions.
> > > The annoyance started long before I bothered opening firefox with an
> extra argument.
> >
> > I am baffled then. I do not see the connection, at all.
>
> --
> Bruce Horrocks
> Hampshire, UK
>
>
> ___________________________________________________________________________________
> 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>Hi Bruce,</div><div><br></div><div>&gt; Could you ple=
ase try their steps to reproduce - namely view a video in=20
Firefox - and do so from a fresh reboot without starting or invoking=20
ConTeXt so we can be sure that it is excluded from the equation?</div><div>=
<br></div><div>Thanks for the suggestion but firefox here has never had any=
 issue playing a youtube video with 6 other video pages and 20 other news p=
ages opened at the same time, and the bug can be reproduced here with just =
an about:blank and no video opened.<br></div></div><br><div class=3D"gmail_=
quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, 30 Oct 2020 at 09:50, =
&lt;<a href=3D"mailto:ntg@scorecrow.com">ntg@scorecrow.com</a>&gt; wrote:<b=
r></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Sylvain,<br>
<br>
This bug tracker report &lt;<a href=3D"https://bugzilla.mozilla.org/show_bu=
g.cgi?id=3D1599329" rel=3D"noreferrer" target=3D"_blank">https://bugzilla.m=
ozilla.org/show_bug.cgi?id=3D1599329</a>&gt; describes lagging / freezing (=
which are symptoms of excessive CPU usage, of course) for versions of Firef=
ox from 70 to 74 inclusive on Manjaro. They also report Chromium seeing the=
 same problem.<br>
<br>
These symptoms seem to be very similar to yours. Could you please try their=
 steps to reproduce - namely view a video in Firefox - and do so from a fre=
sh reboot without starting or invoking ConTeXt so we can be sure that it is=
 excluded from the equation?<br>
<br>
If you get excessive CPU usage following their steps then it is Firefox at =
fault. If you don&#39;t then it might not be - unfortunately it only narrow=
s it down to a &#39;might&#39;.<br>
<br>
Regards,<br>
<br>
&gt; On 29 Oct 2020, at 11:44, Sylvain Hubert &lt;<a href=3D"mailto:champig=
noom@gmail.com" target=3D"_blank">champignoom@gmail.com</a>&gt; wrote:<br>
&gt; <br>
&gt; I&#39;ve just tried chromium which behaves a bit better but still expe=
riences a sudden raise of cpu usage from &lt;10% to &gt;70% during ~1s.<br>
&gt; I&#39;ve also noticed that, even without any browser running, each tim=
e after I compile a file with `context`, my terminal get stuck for ~1s.<br>
&gt; So I&#39;m pretty sure this is a context bug, probably caused by unnec=
essary excessive disk operations or something.<br>
&gt; <br>
&gt; On Thu, 29 Oct 2020 at 12:33, Taco Hoekwater &lt;<a href=3D"mailto:tac=
o@elvenkind.com" target=3D"_blank">taco@elvenkind.com</a>&gt; wrote:<br>
&gt; <br>
&gt; <br>
&gt; &gt; On 29 Oct 2020, at 12:19, Sylvain Hubert &lt;<a href=3D"mailto:ch=
ampignoom@gmail.com" target=3D"_blank">champignoom@gmail.com</a>&gt; wrote:=
<br>
&gt; &gt; <br>
&gt; &gt; And using safe mode here is just to make sure that the problem is=
 not caused by extensions.<br>
&gt; &gt; The annoyance started long before I bothered opening firefox with=
 an extra argument.<br>
&gt; <br>
&gt; I am baffled then. I do not see the connection, at all. <br>
<br>
--<br>
Bruce Horrocks<br>
Hampshire, UK<br>
<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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