How to see which plugins are making Vim slow?

Question

Is there a way to profile Vim plugins?

My MacVim becomes slower and slower when I open a large .py. I know I could deselect all plugins and reselect one

Answer 1

I found another very helpful vim buildin method to show the exactly timing messages while loading your .vimrc.

vim --startuptime timeCost.txt timeCost.txt

Please run:

:help --startuptime

in VIM to get more information.