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Performance test of some of the Zsh plugin managers

To run the test, execute:

./run.zsh

However, there are problems with zplug when running the test this way – the test hangs with a message:

zsh: suspended (tty input)  ./run.zsh

So an invocation of fg is required. To address this, run the test script as a function:

fpath+=( $PWD )
autoload run.zsh
run.zsh

Drawing the results

To generate a graph of the average load times:

First, install dependencies:

python3 -m pip install matplotlib

Then,

python3 plot.py

Details of the test

The test loads the following 28 plugins:

arzzen/git-quick-stats.git
fakerr/git-recall
geometry-zsh/geometry
hlissner/zsh-autopair
iwata/git-now
jhawthorn/fzy
junegunn/fzf-bin
k4rthik/git-cal
ogham/exa
ohmyzsh / lib/git.zsh
ohmyzsh / plugins/git/git.plugin.zsh
tj/git-extras
trapd00r/ls_colors
urbainvaes/fzf-marks
voronkovich/gitignore.plugin.zsh
zdharma-continuum/declare-zshrc
zdharma-continuum/git-url
zdharma-continuum/history-search-multi-word
zdharma-continuum/revolver
zdharma-continuum/vramsteg-zsh
zdharma-continuum/zconvey
zdharma-continuum/zsh-diff-so-fancy
zdharma-continuum/zsh-editing-workbench
zdharma-continuum/zsh-navigation-tools
zdharma-continuum/zsh-unique-id
zdharma-continuum/zui
zdharma-continuum/zunit
zsh-users/zsh-autosuggestions

Some of the plugins are relatively regular Makefile-based projects, like arzzen/git-quick-stats.git. The atclone'', make'', ice modifiers of Zinit and the hook-build tag of Zplug allow to install and use them. However they're problematic with zgen, which doesn't have such hooks. For it, instead an empty plugin zdharma/null is being loaded in a following way:

# git-recall
zgen load zdharma-continuum/null null.plugin.zsh empty-plugin.zsh-13
# git-quick-stats
zgen load zdharma-continuum/null null.plugin.zsh empty-plugin.zsh-14

the empty-plugin.zsh-14, etc. is a branch. The file null.plugin.zsh contains only 3 instructions:

0="${${ZERO:-${0:#$ZSH_ARGZERO}}:-${(%):-%N}}"
0="${${(M)0:#/*}:-$PWD/$0}"
true

This way, a little balance is introduced into the test and creates a good minimum for the comparison – to have zgen only clone and load an almost empty plugin instead of setting up a PATH for a command-like plugin, especially because of the way that zgen works – by storing plain source commands and not executing any code.

However, it puts zgen in a better position because it has to clone an almost empty repository and not a complete project, so the installation-time test is biased. However, it's hard to address this without simplifying the test because of limited zgen functionality. Also, zgen doesn't run the compilation (i.e. make) during the installation of the plugins.

Zplug and Zinit tests are relatively identical (zshrc for Zplug, zshrc for Zinit).

Results

Installation times

Startup times

Result comments

The three different Zinit results need explaining:

  1. Zinit light – plugins are being loaded without tracking, i.e., cannot be unloaded, and their reports are empty.
  2. Zinit load – plugins are being loaded with tracking, i.e., are available for unloading, and their report data is gathered (available through zinit report {plugin-name} command).
  3. Zinit (Turbo) load – plugins are loaded with tracking and in Turbo mode – i.e., in the background & after prompt – the shell is instantly ready to use.

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