Unite causes vim to freeze with 100% cpu usage

[jakubgs]

Hi,

I'm using vim 7.4.488 on Debian Jessie with newest Unite and vimproc.vim(for file_rec/async). I've managed to reproduce this problem without vimproc.vim so I don't think it's relevant.

At (seemingly)random times vim will freeze, and when looked up in htop it's using 100% or close to 100% cpu:

The freezes sometimes happen when actively using Unite, but sometimes not.

I've tried tracking down this problem by using :profile commands but nothing shows up. Execution times logged using :profile seem to not include the long freezes(several seconds, more than a minute, sometimes endless).

Here's a profile.log from a freeze that lasted about more than 3 minutes:

https://gist.githubusercontent.com/PonderingGrower/4689817e5bcfbf52895c/raw/7ab81ae22d774cffd9551274bc19a02c59c7b618/profile.log

In order to reproduce it I've spent a bit of time doing searches with unite. To be exact using this:

nnoremap <c-i>     :execute('Unite buffer file_mru file_rec/async:'.g:projectroot)<CR>

I have tried disabling plugins one by one and I've narrowed down this issue to Unite, but I do not know what to do next to identify what exactly is causing it.

I will be happy to follow any debugging steps you might suggest.

[Shougo]

I think it is same problem. You can test GC patch.

#701

[Shougo]

You can see that Vim uses 2GB memory in the screen shot.
So, Vim's GC worked. But current Vim's GC routine has problem.

[Shougo]

It is vim_dev thread.

https://groups.google.com/forum/#!searchin/vim_dev/GC/vim_dev/DBYOdHQWvqY/1WH04_dwETIJ

You can request to include the patch in the thread.

[jakubgs]

Thanks! I did a lot of googling but I did not find that patch.

I'll try apllying it and see if it helps.

And thanks a lot for creating Unite. It's amazing!

[luishdez]

I encounter the same problem and I did a fork with the patch applied here: https://github.com/luishdez/vim. I use "OS X" and I did brew edit vim and change to the zip and sha1 , and re-install with brew. May be this will help you.

[jakubgs]

I use Debian so what I did was:

$ sudo apt-get source vim-gtk
$ tar zxvf vim-gtk-XYZXYZXYZ.tar.gz
$ cd vim-gtk-XYZXYZXYZ
$ curl -o gb_patch.diff https://gist.githubusercontent.com/mattn/0c58a7398c63ab4c3066/raw/2e1ff4e5368e32ff1017e86b563148c106838778/gistfile1.diff
$ path -p1 < gb_patch.diff
$ cd src
$ # ./configure needs to be run with sudo or it won't find gtk2 libraries
$ sudo ./configure --with-features=huge --enable-gui=gtk2 --with-x --enable-fontset
$ make
$ sudo checkinstall

checkinstall will create a deb package and install it for you, which is better than cluttering up your root with make install. Wrote this down for anyone that might google this searching for a solution.

I haven't used it that much yesterday but I haven't experienced even one freeze, so I think it's fixed. We'll see today but it looks good. THANKS!

[Shougo]

Fixed in Vim 7.4.615

https://groups.google.com/forum/#!topic/vim_dev/pXjj7rww5RY

[jakubgs]

That's awesome to hear! I won't have to keep building my own deb package.

Thansk Shougo, you are the man!