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Gilly
Gilly
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Update

The following are my file limits:

$ ulimit -n
4096
$ sysctl -a | grep files
kern.maxfiles: 20480
kern.maxfilesperproc: 10240
kern.num_files: 4496

And my open files:

$ lsof | awk '{print $1 "-" $2}' | sort | uniq -c | sort -nr | head -10
 728 Google-345
 508 Google-551
 430 Mail-353
 418 Skype-12098
 356 Dock-361
 350 Emacs-8847
 207 Dropbox-637
 176 Google-22455
 176 Google-21229
 165 Google-26072

Emacs is the only program having issues, yet doesn't seem to have a comparatively high file count.

Update

The following are my file limits:

$ ulimit -n
4096
$ sysctl -a | grep files
kern.maxfiles: 20480
kern.maxfilesperproc: 10240
kern.num_files: 4496

And my open files:

$ lsof | awk '{print $1 "-" $2}' | sort | uniq -c | sort -nr | head -10
 728 Google-345
 508 Google-551
 430 Mail-353
 418 Skype-12098
 356 Dock-361
 350 Emacs-8847
 207 Dropbox-637
 176 Google-22455
 176 Google-21229
 165 Google-26072

Emacs is the only program having issues, yet doesn't seem to have a comparatively high file count.

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Gilly
Gilly
  • 211
  • 1
  • 5

Debugging open file handles in emacs

Is there a way I can find what file handles emacs has open, and close these references? Or even better, find where they are being open?

Emacs is keeping handles to a large number of files (a leak) that I don't have corresponding buffers to. My standard method of closing a buffer has been using the kill-buffer command.

Context:

I am having a reoccurring issue, where after a day or two of being open I can no longer do any file operations in emacs, due to a "Too many open files" error when creating a pipe. I am on OSX 10.10.4, Emacs 25.0.50 installed with homebrew.

Here is a sample of emacs' open files according to Activity Monitor (double click on emacs and select "Open Files and Ports").

/Users/Ash/Dropbox/org
/Users/Ash/Dropbox/org
/Users/Ash/Dropbox/org
/Users/Ash/Dropbox/org
/Users/Ash/Documents/workspace/roboclub/Federation-Place
/Users/Ash/Documents/workspace/roboclub/Federation-Place
/Users/Ash/Documents/workspace/roboclub/Federation-Place
/Users/Ash/Documents/workspace/roboclub/Federation-Place/web/site
/Users/Ash/Documents/workspace/roboclub/Federation-Place/web/site/src/javascript/status
/Users/Ash/Dropbox/org
/Users/Ash/Dropbox/org
/Users/Ash/Dropbox/org
/Users/Ash/Dropbox/org
/Users/Ash/Documents/workspace/roboclub/Federation-Place/web/site/src/javascript/status
/Users/Ash/Documents/workspace/roboclub/Federation-Place
/Users/Ash/Documents/workspace/roboclub/Federation-Place
/Users/Ash/Documents/workspace/roboclub/Federation-Place
/Users/Ash/Documents/workspace/roboclub/Federation-Place/web/site/src/javascript/status
/Users/Ash/Documents/workspace/roboclub/Federation-Place/web/site/src/javascript/status
/Users/Ash/Documents/workspace/roboclub/Federation-Place/web/site/src/javascript/status
/Users/Ash/Documents/workspace/roboclub/Federation-Place/web/site/src/javascript/status
/Users/Ash/Documents/workspace/roboclub/Federation-Place/web/site/src/javascript
/Users/Ash/Documents/workspace/roboclub/Federation-Place/web/site/src/javascript
/Users/Ash/Documents/workspace/roboclub/Federation-Place/web/site/src/javascript
/Users/Ash/Documents/workspace/roboclub/Federation-Place/web/site/src/javascript

There are actually many more files open, but you can see that they are being repeated. (Also these are folders, not sure why that is).