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bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time
From: |
Eli Zaretskii |
Subject: |
bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time |
Date: |
Thu, 13 Mar 2014 05:49:14 +0200 |
> From: Andrew Beekhof <andrew@beekhof.net>
> Date: Thu, 13 Mar 2014 11:30:15 +1100
> Cc: 16995@debbugs.gnu.org
>
> > The backtrace you posted indicates that Emacs is in garbage
> > collection. To see if this is indeed the cause of those "lockups",
> > could you please customize garbage-collection-messages to a non-nil
> > value, and then see if every time Emacs locks up there's a message in
> > the echo area announcing GC?
>
> It took about 2 hours of solid editing to hit it again this morning, but
> eventually I did.
>
> For the first while I saw 'Garbage collecting...done', with the 'done' part
> flashing.
>
> Then it switched to 'Garbage collecting...'
>
> At some point I must have hit C-l (goto-line) because after I came back from
> making breakfast (I wasn't exaggerating when I said 'minutes') it was
> prompting for a line number.
> Pressing C-g (cancel) at this point resulted in the buffer flashing between
> displaying 'Quit' and 'Garbage collecting...'
>
> After it stopped doing this, I used the pointer to move the cursor which got
> me back to the 'Garbage collecting...' phase followed by 'Garbage
> collecting...done', with the 'done' part flashing again.
>
> Top says:
>
> 22971 beekhof 20 0 658092 61636 15584 R 99.1 0.8 37:03.28 emacs
>
>
>
>
> (note that its still the same process from yesterday)
>
>
> If I now switch to a .c file, things appear normal.
> Switching back to the .py file and doing anything results in more garbage
> collection.
So I guess the question now becomes why does Python mode conses so
many Lisp objects that it triggers GC so frequently.
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time, Andrew Beekhof, 2014/03/12
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time, Michael Heerdegen, 2014/03/12
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time, Eli Zaretskii, 2014/03/12
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time, Andrew Beekhof, 2014/03/12
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time,
Eli Zaretskii <=
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time, Stefan Monnier, 2014/03/13
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time, Glenn Morris, 2014/03/13
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time, Andrew Beekhof, 2014/03/17
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time, Daniel Colascione, 2014/03/17
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time, Glenn Morris, 2014/03/17
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time, Andrew Beekhof, 2014/03/17
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time, Stefan, 2014/03/17
- bug#16995: 24.3; CPU usage spikes to 100% for minutes at a time, Andrew Beekhof, 2014/03/17