project-explorer freezing

when i open it in one project (not so big) it makes emacs freeze. i can not tell you much more because i don't get any error message or whatever..

Feb 23 '15 21:02 jney

I've got 9224 files in project, because of node_modules i use

$ find . -type f | wc -l
$ 9224

Feb 23 '15 22:02 jney

Can you try making a copy and removing files to figure out the culprit? There's probably something unusual going on that I haven't considered.

Enabling M-x toggle-debug-on-error and pressing C-g when it freezes might also reveal something.

I'll probably add node_modules to the default pe/omit-regex, since it's mentioned in many tickets.

Feb 23 '15 22:02 sabof

If it's something inside node_modules, I might be able reproduce it with a list of installed modules.

Feb 23 '15 22:02 sabof

i just noticed #4 issue. what are the functionalities that can't make it "lazy" ?

Mar 03 '15 10:03 jney

There's a bunch. It shouldn't freeze with ~1000 files.

Mar 03 '15 11:03 sabof

For me as well, it renders Emacs unresponsive.

Mar 29 '15 09:03 katspaugh

I've described above how you might help me debug this.

Mar 29 '15 11:03 sabof

I couldn't get any useful information out of toggle-debug-on-error + C-g, but I confirm that removing node_modules from the project directory and recaching the tree fixes the problem.

Mar 29 '15 17:03 katspaugh

What modules do you have installed? What is your OS?

Mar 29 '15 19:03 sabof

@sabof sorry for the delay! In my node_modules there are 50 modules, bower, grunt, karma, coffee-script and the rest are various grunt and karma plugins.

I have to say on a more recent laptop the problem is less pronounced, but it still makes Emacs almost unusable. The OS is OS X.

Apr 11 '15 21:04 katspaugh

But eventually it finishes indexing, and everything works as usual?

Apr 12 '15 00:04 sabof

It is indexing OK, I understand it's expected to take some time. The problem is exactly after, when you do regular stuff in Emacs like opening fils or even moving cursor.

Apr 12 '15 10:04 katspaugh

I've added node_modules to pe/omit-regex. I could limit the number of overlays used, but I'm not sure that the problem is prevalent enough.

Apr 12 '15 16:04 sabof

Thanks! It does work fast now.

Apr 12 '15 21:04 katspaugh

Super-old issue, but figured I figured I'd chime in--If the issue crops up again, M-x toggle-debug-on-quit + C-g should give more information than M-x toggle-debug-on-error since it doesn't need an error to show you the current stack trace.

Alternatively, pkill -USR2 emacs from a terminal will get you a stack trace from an unresponsive Emacs that won't even respond to C-g. (And even unfreeze it for you..!)

This also turns on debug-on-quit, so after you get a stack trace, you might want to run M-x toggle-debug-on-quit again, or else it might get a bit annoying.

May 16 '16 17:05 Archenoth