Debug zsh startup time

README.md

Debug zsh startup time

1. Inject profiling code

   At the beginning of your .zshrc add following: zmodload zsh/zprof

   and at the end add: zprof

   This will load zprof mod and display what your shell was doing durung your initialization.

2. Measure startup time

   time zsh -i -c exit

Thanks for guide! Based on this, I would also like to add my approach where I don't have to edit the rc file manually each time to check:

if [ -n "${ZSH_DEBUGRC+1}" ]; then
    zmodload zsh/zprof
fi

# rest of .zshrc script

if [ -n "${ZSH_DEBUGRC+1}" ]; then
    zprof
fi

then I just run:

time ZSH_DEBUGRC=1 zsh -i -c exit

@sharunkumar Thanks! Great idea. Check this to see how I implemented.

helpful!

And if you forget the command, you may add:

alias zsh_zprof=time ZSH_DEBUGRC=1 zsh -i -c exit

…so you can simply run zsh_zprofwhenever needed.

@yves-vogl It looks like you've reviewed my .zshrc 🙂

All the credits belong to you ❤️