How can I find which VIM plugin is guilty for overloading my CPU

Question

I just done a fresh installation of Vim, and with this occasion I added some new plugins to my VIM configuration. The problem is that now, when I do the first change in the file, VIM blocks and one of my CPUs reach 100% load. This is also happening every now and then while I'm editing the file. This never happened in the previous configuration. How can I find what plugin is killing my CPU?

Answer 1

As an alternative to romainl's (nice and simple) trial-and-error approach:

I've done such once using vim's built-in profiler: :he profile.

You might need to compile vim by yourself to activate (profiling is not enabled in the default vim distribution).

Then

:profile start filename

to activate profiling and write your profile data to filename, edit your file (which pushes the CPU to 100%), once done

:profdel

to stop profiling. Quit vim and you'll find the profiling information written in filename.