Every time I open a terminal on macOS, zsh takes like a second to show the
prompt. It’s super annoying!
I profiled using
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| if [ -n "${ZSH_DEBUGRC+1}" ]; then
zmodload zsh/zprof
fi
# your zsh config
if [ -n "${ZSH_DEBUGRC+1}" ]; then
zprof
fi
|
To make it easier I’ve added this alias:
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| alias zperf='time ZSH_DEBUGRC=1 zsh -i -c exit'
|
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| $ zperf
num calls time self name
-----------------------------------------------------------------------------------
1) 1 36.73 36.73 26.10% 36.73 36.73 26.10% autoenv_init
2) 1 22.16 22.16 15.75% 22.16 22.16 15.75% _mise_hook
3) 21 28.72 1.37 20.41% 18.10 0.86 12.86% _omz_source
4) 2 15.97 7.99 11.35% 15.97 7.99 11.35% compaudit
5) 1 13.75 13.75 9.77% 13.75 13.75 9.77% (anon) [/Users/mgreco/.oh-my-zsh/tools/check_for_upgrade.sh:157]
6) 1 24.00 24.00 17.05% 10.24 10.24 7.28% handle_update
7) 1 8.93 8.93 6.34% 8.93 8.93 6.34% zrecompile
8) 1 8.81 8.81 6.26% 8.81 8.81 6.26% test-ls-args
9) 1 19.41 19.41 13.79% 3.44 3.44 2.44% compinit
10) 1 0.61 0.61 0.43% 0.61 0.61 0.43% regexp-replace
11) 1 0.57 0.57 0.41% 0.57 0.57 0.41% colors
12) 6 0.44 0.07 0.31% 0.44 0.07 0.31% add-zsh-hook
13) 4 0.23 0.06 0.16% 0.23 0.06 0.16% compdef
14) 2 0.22 0.11 0.16% 0.22 0.11 0.16% is-at-least
15) 8 0.14 0.02 0.10% 0.14 0.02 0.10% addToPathFront
16) 8 0.13 0.02 0.10% 0.13 0.02 0.10% addToPath
17) 1 36.85 36.85 26.18% 0.12 0.12 0.08% autoenv_cd
18) 4 0.07 0.02 0.05% 0.07 0.02 0.05% addToMyGitProjects
19) 3 0.03 0.01 0.02% 0.03 0.01 0.02% is_theme
20) 2 0.01 0.01 0.01% 0.01 0.01 0.01% env_default
21) 1 36.86 36.86 26.20% 0.01 0.01 0.01% enable_autoenv
22) 1 0.01 0.01 0.01% 0.01 0.01 0.01% bashcompinit
23) 1 36.85 36.85 26.19% 0.01 0.01 0.00% cd
-----------------------------------------------------------------------------------
21) 1 36.86 36.86 26.20% 0.01 0.01 0.01% enable_autoenv
1/1 36.85 36.85 26.19% 0.01 0.01 cd [23]
-----------------------------------------------------------------------------------
1/1 36.85 36.85 26.19% 0.01 0.01 enable_autoenv [21]
23) 1 36.85 36.85 26.19% 0.01 0.01 0.00% cd
1/1 36.85 36.85 26.18% 0.12 0.12 autoenv_cd [17]
-----------------------------------------------------------------------------------
1/1 36.85 36.85 26.18% 0.12 0.12 cd [23]
17) 1 36.85 36.85 26.18% 0.12 0.12 0.08% autoenv_cd
1/1 36.73 36.73 26.10% 36.73 36.73 autoenv_init [1]
-----------------------------------------------------------------------------------
1/1 36.73 36.73 26.10% 36.73 36.73 autoenv_cd [17]
1) 1 36.73 36.73 26.10% 36.73 36.73 26.10% autoenv_init
-----------------------------------------------------------------------------------
3) 21 28.72 1.37 20.41% 18.10 0.86 12.86% _omz_source
1/1 0.01 0.01 0.01% 0.01 0.01 bashcompinit [22]
2/2 0.01 0.01 0.01% 0.01 0.01 env_default [20]
2/4 0.09 0.04 0.06% 0.09 0.04 compdef [13]
2/2 0.22 0.11 0.16% 0.22 0.11 is-at-least [14]
4/6 0.31 0.08 0.22% 0.31 0.08 add-zsh-hook [12]
1/1 0.57 0.57 0.41% 0.57 0.57 colors[11]
1/1 0.61 0.61 0.43% 0.61 0.61 regexp-replace [10]
1/1 8.81 8.81 6.26% 8.81 8.81 test-ls-args [8]
-----------------------------------------------------------------------------------
6) 1 24.00 24.00 17.05% 10.24 10.24 7.28% handle_update
1/1 13.75 13.75 9.77% 13.75 13.75 (anon)[/Users/mgreco/.oh-my-zsh/tools/check_for_upgrade.sh:157] [5]
-----------------------------------------------------------------------------------
2) 1 22.16 22.16 15.75% 22.16 22.16 15.75% _mise_hook
-----------------------------------------------------------------------------------
9) 1 19.41 19.41 13.79% 3.44 3.44 2.44% compinit
1/2 15.97 15.97 11.35% 0.18 0.18 compaudit [4]
-----------------------------------------------------------------------------------
1/2 15.97 15.97 11.35% 0.18 0.18 compinit [9]
1/2 15.79 15.79 11.22% 15.79 15.79 compaudit [4]
4) 2 15.97 7.99 11.35% 15.97 7.99 11.35% compaudit
1/2 15.79 15.79 11.22% 15.79 15.79 compaudit [4]
-----------------------------------------------------------------------------------
1/1 13.75 13.75 9.77% 13.75 13.75 handle_update [6]
5) 1 13.75 13.75 9.77% 13.75 13.75 9.77% (anon) [/Users/mgreco/.oh-my-zsh/tools/check_for_upgrade.sh:157]
-----------------------------------------------------------------------------------
7) 1 8.93 8.93 6.34% 8.93 8.93 6.34% zrecompile
-----------------------------------------------------------------------------------
1/1 8.81 8.81 6.26% 8.81 8.81 _omz_source [3]
8) 1 8.81 8.81 6.26% 8.81 8.81 6.26% test-ls-args
-----------------------------------------------------------------------------------
1/1 0.61 0.61 0.43% 0.61 0.61 _omz_source [3]
10) 1 0.61 0.61 0.43% 0.61 0.61 0.43% regexp-replace
-----------------------------------------------------------------------------------
1/1 0.57 0.57 0.41% 0.57 0.57 _omz_source [3]
11) 1 0.57 0.57 0.41% 0.57 0.57 0.41% colors
-----------------------------------------------------------------------------------
4/6 0.31 0.08 0.22% 0.31 0.08 _omz_source [3]
12) 6 0.44 0.07 0.31% 0.44 0.07 0.31% add-zsh-hook
-----------------------------------------------------------------------------------
2/4 0.09 0.04 0.06% 0.09 0.04 _omz_source [3]
13) 4 0.23 0.06 0.16% 0.23 0.06 0.16% compdef
-----------------------------------------------------------------------------------
2/2 0.22 0.11 0.16% 0.22 0.11 _omz_source [3]
14) 2 0.22 0.11 0.16% 0.22 0.11 0.16% is-at-least
-----------------------------------------------------------------------------------
15) 8 0.14 0.02 0.10% 0.14 0.02 0.10% addToPathFront
-----------------------------------------------------------------------------------
18) 4 0.07 0.02 0.05% 0.07 0.02 0.05% addToMyGitProjects
-----------------------------------------------------------------------------------
19) 3 0.03 0.01 0.02% 0.03 0.01 0.02% is_theme
-----------------------------------------------------------------------------------
2/2 0.01 0.01 0.01% 0.01 0.01 _omz_source [3]
20) 2 0.01 0.01 0.01% 0.01 0.01 0.01% env_default
-----------------------------------------------------------------------------------
1/1 0.01 0.01 0.01% 0.01 0.01 _omz_source [3]
22) 1 0.01 0.01 0.01% 0.01 0.01 0.01% bashcompinit
ZSH_DEBUGRC=1 zsh -i -c exit 0.16s user 0.18s system 38% cpu 0.873 total
|
So, I’ve just disabled:
oh-my-zshcompletionsstarship
and look at this now:
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| $ time ZSH_DEBUGRC=1 zsh -i -c exit
num calls time self name
-----------------------------------------------------------------------------------
1) 1 46.78 46.78 69.34% 46.78 46.78 69.34% autoenv_init
2) 1 20.14 20.14 29.85% 20.14 20.14 29.85% _mise_hook
3) 1 47.00 47.00 69.66% 0.22 0.22 0.32% autoenv_cd
4) 8 0.12 0.02 0.19% 0.12 0.02 0.19% addToPathFront
5) 8 0.12 0.02 0.18% 0.12 0.02 0.18% addToPath
6) 4 0.05 0.01 0.07% 0.05 0.01 0.07% addToMyGitProjects
7) 1 47.03 47.03 69.71% 0.02 0.02 0.04% enable_autoenv
8) 1 47.01 47.01 69.68% 0.01 0.01 0.01% cd
-----------------------------------------------------------------------------------
7) 1 47.03 47.03 69.71% 0.02 0.02 0.04% enable_autoenv
1/1 47.01 47.01 69.68% 0.01 0.01 cd [8]
-----------------------------------------------------------------------------------
1/1 47.01 47.01 69.68% 0.01 0.01 enable_autoenv [7]
8) 1 47.01 47.01 69.68% 0.01 0.01 0.01% cd
1/1 47.00 47.00 69.66% 0.22 0.22 autoenv_cd [3]
-----------------------------------------------------------------------------------
1/1 47.00 47.00 69.66% 0.22 0.22 cd [8]
3) 1 47.00 47.00 69.66% 0.22 0.22 0.32% autoenv_cd
1/1 46.78 46.78 69.34% 46.78 46.78 autoenv_init [1]
-----------------------------------------------------------------------------------
1/1 46.78 46.78 69.34% 46.78 46.78 autoenv_cd [3]
1) 1 46.78 46.78 69.34% 46.78 46.78 69.34% autoenv_init
-----------------------------------------------------------------------------------
2) 1 20.14 20.14 29.85% 20.14 20.14 29.85% _mise_hook
-----------------------------------------------------------------------------------
4) 8 0.12 0.02 0.19% 0.12 0.02 0.19% addToPathFront
-----------------------------------------------------------------------------------
5) 8 0.12 0.02 0.18% 0.12 0.02 0.18% addToPath
-----------------------------------------------------------------------------------
6) 4 0.05 0.01 0.07% 0.05 0.01 0.07% addToMyGitProjects
ZSH_DEBUGRC=1 zsh -i -c exit 0.06s user 0.09s system 30% cpu 0.462 total
|
I have a terribly boring and plain terminal, but at least it’s very fast.
BTW, I’ve never had this issue on Linux.
I Hate you MacOS (written on MacOS)
After some more iterations, I decided to get rid of oh-my-zsh and all my custom
functions (addToPath, addToMyGitProjects, …) as well,
and now it flies!
$ zperf
num calls time self name
-----------------------------------------------------------------------------------
ZSH_DEBUGRC=1 zsh -i -c exit 0.01s user 0.02s system 66% cpu 0.049 total