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docs: add asciinema comparing p9k and p10k perf; shorten some sections

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romkatv 6 years ago
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README.md
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@ -10,40 +10,38 @@ simply replace it with Powerlevel10k and enjoy responsive shell like it's 80's a
Powerlevel10k is a drop-in replacement for Powerlevel9k. It uses the same configuration options as Powerlevel10k is a drop-in replacement for Powerlevel9k. It uses the same configuration options as
Powerlevel9k and produces the same results Powerlevel9k and produces the same results
[[*]](#does-powerlevel10k-always-render-exactly-the-same-prompt-with-the-same-config). [[*]](#does-powerlevel10k-always-render-exactly-the-same-prompt-with-the-same-config).
It's simply [much faster](#how-fast-is-it). It's simply [much faster](#is-it-really-faster).
## Table of Contents ## Table of Contents
1. [Installation](#installation) 1. [Installation](#installation)
1. [Manual](#manual) 1. [Manual](#manual)
2. [Oh My Zsh](#oh-my-zsh) 1. [Oh My Zsh](#oh-my-zsh)
3. [Prezto](#prezto) 1. [Prezto](#prezto)
4. [Antigen](#antigen) 1. [Antigen](#antigen)
5. [Zplug](#zplug) 1. [Zplug](#zplug)
6. [Zgen](#zgen) 1. [Zgen](#zgen)
7. [Antibody](#antibody) 1. [Antibody](#antibody)
2. [Configuration](#configuration) 1. [Configuration](#configuration)
3. [Try it out](#try-it-out) 1. [Fonts](#fonts)
1. [Try it out](#try-it-out)
1. [For Powerlevel9k users](#for-powerlevel9k-users) 1. [For Powerlevel9k users](#for-powerlevel9k-users)
2. [For new users](#for-new-users) 1. [For new users](#for-new-users)
3. [Docker playground](#docker-playground) 1. [Docker playground](#docker-playground)
4. [How fast is it?](#how-fast-is-it) 1. [Is it really faster?](#is-it-really-faster)
5. [License](#license) 1. [License](#license)
6. [FAQ](#faq) 1. [FAQ](#faq)
1. [Why does Powerlevel10k spawn extra processes?](#why-does-powerlevel10k-spawn-extra-processes) 1. [Why does Powerlevel10k spawn extra processes?](#why-does-powerlevel10k-spawn-extra-processes)
2. [Does Powerlevel10k always render exactly the same prompt with the same config?](#does-powerlevel10k-always-render-exactly-the-same-prompt-with-the-same-config) 1. [Are there configuration options that make Powerlevel10k slow?](are-there-configuration-options-that-make-powerlevel10k-slow)
3. [I am getting an error: "zsh: bad math expression: operand expected at end of string"](#i-am-getting-an-error-zsh-bad-math-expression-operand-expected-at-end-of-string) 1. [Does Powerlevel10k always render exactly the same prompt with the same config?](#does-powerlevel10k-always-render-exactly-the-same-prompt-with-the-same-config)
3. [Are changes getting up/down-streamed?](#are-changes-getting-updown-streamed) 1. [I am getting an error: "zsh: bad math expression: operand expected at end of string"](#i-am-getting-an-error-zsh-bad-math-expression-operand-expected-at-end-of-string)
4. [Is there an AUR package for Powerlevel10k?](#is-there-an-aur-package-for-powerlevel10k) 1. [Is there an AUR package for Powerlevel10k?](#is-there-an-aur-package-for-powerlevel10k)
5. [I cannot make Powerlevel10k work with my plugin manager. Help!](#i-cannot-make-powerlevel10k-work-with-my-plugin-manager-help) 1. [I cannot make Powerlevel10k work with my plugin manager. Help!](#i-cannot-make-powerlevel10k-work-with-my-plugin-manager-help)
6. [What is the minimum supported zsh version?](#what-is-the-minimum-supported-zsh-version) 1. [What is the minimum supported ZSH version?](#what-is-the-minimum-supported-zsh-version)
## Installation ## Installation
If you don't yet have a Powerline font installed, follow the Installation is virtually the same as in Powerlevel9k. If you managed to install Powerlevel9k, you'll be able to install Powerlevel10k.
[font installation guide](https://github.com/bhilburn/powerlevel9k/wiki/Install-Instructions#step-2-install-a-powerline-font)
from Powerlevel9k. Once you have a working Powerline font installed, proceed with the installation
of Powerlevel10k as described below.
### Manual ### Manual
@ -88,8 +86,9 @@ Add `antibody bundle romkatv/powerlevel10k` to your `~/.zshrc`.
## Configuration ## Configuration
Powerlevel10k recognized all configuration options used by Powerlevel9k. See Powerlevel9k Powerlevel10k recognized all configuration options used by Powerlevel9k. See Powerlevel9k
[configuration guide](https://github.com/bhilburn/powerlevel9k#prompt-customization) for the full [configuration guide](https://github.com/bhilburn/powerlevel9k#prompt-customization). Powerlevel10k
list. has a few
[extensions](https://github.com/romkatv/powerlevel10k/blob/master/EXTENDED_CONFIGURATION.md).
If you've been using Powerlevel9k before, **do not remove the configuration options**. Powerlevel10k If you've been using Powerlevel9k before, **do not remove the configuration options**. Powerlevel10k
will pick them up and provide you with the same prompt UI you are used to. will pick them up and provide you with the same prompt UI you are used to.
@ -115,8 +114,15 @@ Read the documentation at the top of `~/.purepower` (or
[here](https://github.com/romkatv/dotfiles-public/blob/master/.purepower)) to get an idea of what [here](https://github.com/romkatv/dotfiles-public/blob/master/.purepower)) to get an idea of what
your prompt is capable of. You can edit the file to change your Powerlevel10k configuration. your prompt is capable of. You can edit the file to change your Powerlevel10k configuration.
Powerlevel10k has a few configuration options that Powerlevel9k doesn't. See ## Fonts
[extended configuration](https://github.com/romkatv/powerlevel10k/blob/master/EXTENDED_CONFIGURATION.md).
Depending on your configuration, you might need to install a Powerline font. Follow the
[font installation guide](https://github.com/bhilburn/powerlevel9k/wiki/Install-Instructions#step-2-install-a-powerline-font)
from Powerlevel9k.
[Pure Power](https://github.com/romkatv/dotfiles-public/blob/master/.purepower) config doesn't
require custom fonts. It'll work even with regular system fonts. If you are having trouble with
patched fonts, try Pure Power.
## Try it out ## Try it out
@ -126,7 +132,7 @@ switch.
### For Powerlevel9k users ### For Powerlevel9k users
If you are currently using Powerlevel9k, you can try Powerlevel10k in a temporary zsh shell. The If you are currently using Powerlevel9k, you can try Powerlevel10k in a temporary zsh session. The
prompt will look exactly like what you are used to but it'll be faster. prompt will look exactly like what you are used to but it'll be faster.
```zsh ```zsh
@ -167,59 +173,30 @@ docker run -e LANG=C.UTF-8 -e LC_ALL=C.UTF-8 -e TERM=$TERM -it --rm ubuntu bash
exec zsh' exec zsh'
``` ```
## How fast is it? ## Is it really fast?
Powerlevel10k renders prompt between 10 and 100 times faster than powerlevel9k.
Here are benchmark results obtained with Yes.
[zsh-prompt-benchmark](https://github.com/romkatv/zsh-prompt-benchmark) on Intel i9-7900X
running Ubuntu 18.04.
| Theme | / | ~/linux | [![asciicast](https://asciinema.org/a/NHRjK3BMePw66jtRVY2livHwZ.svg)](https://asciinema.org/a/NHRjK3BMePw66jtRVY2livHwZ)
|---------------------|----------:| ---------:|
| powerlevel9k/master | 101 ms | 280 ms |
| powerlevel9k/next | 26 ms | 255 ms |
| **powerlevel10k** | **1 ms** | **22 ms** |
| naked zsh | 0.05 ms | 0.05 ms |
Columns define the current directory where the prompt was rendered. Benchmark results obtained with
[zsh-prompt-benchmark](https://github.com/romkatv/zsh-prompt-benchmark) on Intel i9-7900X
running Ubuntu 18.04 with the config from the demo.
* `/` -- root directory, not a git repo. | Theme | Prompt Latency |
* `~/linux` -- [linux](https://github.com/torvalds/linux) git repo with 60k files. It was checked |---------------------|---------------:|
out to an M.2 SSD. | powerlevel9k/master | 1046 ms |
| powerlevel9k/next | 1005 ms |
| **powerlevel10k** | **8.7 ms** |
powerlevel9k/master is the stable branch of powerlevel9k, the one that virtually everyone uses. powerlevel9k/master is the stable branch of powerlevel9k, the one that virtually everyone uses.
powerlevel9k/next is the development branch for the next release. powerlevel9k/next is the development branch for the next release.
Here's how the prompt looked like during benchmarking.
![](https://raw.githubusercontent.com/romkatv/powerlevel10k/master/prompt.png)
It was identical in Powerlevel10k and Powerlevel9k. Even though Powerlevel10k can dynamically
switch to async prompts, it wasn't happening during the benchmark because latencies were low.
Prompts with both themes were essentially synchronous, with every prompt having up-to-date git info
(no greyed-out vcs/git segments).
Configuration that was used:
```zsh
POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(dir_writable dir vcs)
POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS=(status time)
POWERLEVEL9K_MODE=nerdfont-complete
POWERLEVEL9K_PROMPT_ON_NEWLINE=true
POWERLEVEL9K_ROOT_ICON=$'\uF09C'
POWERLEVEL9K_TIME_ICON=$'\uF017'
POWERLEVEL9K_TIME_BACKGROUND=magenta
POWERLEVEL9K_STATUS_OK_BACKGROUND=grey53
```
Powerlevel10k shows similar performance advantage over Powerlevel9k on Mac OS, FreeBSD, WSL, and
Raspberry Pie.
## License ## License
Powerlevel10k is released under the [MIT license](https://github.com/romkatv/powerlevel10k/blob/master/LICENSE). Contributions are convered by the same license. Powerlevel10k is released under the
[MIT license](https://github.com/romkatv/powerlevel10k/blob/master/LICENSE). Contributions are
convered by the same license.
## FAQ ## FAQ
@ -231,14 +208,23 @@ prompt; gitstatus spawns `gitstatusd` and `zsh`. See
if `POWERLEVEL9K_EXPERIMENTAL_TIME_REALTIME` is set to `true`. This is used to trigger prompt if `POWERLEVEL9K_EXPERIMENTAL_TIME_REALTIME` is set to `true`. This is used to trigger prompt
refresh every second. refresh every second.
### Are there configuration options that make Powerlevel10k slow?
No, Powerlevel10k is always fast, with any configuration you throw at it. If you have noticeable
prompt latency when using Powerlevel10k, please
[open an issue](https://github.com/romkatv/powerlevel10k/issues).
### Does Powerlevel10k always render exactly the same prompt as Powerlevel9k given the same config? ### Does Powerlevel10k always render exactly the same prompt as Powerlevel9k given the same config?
This is the goal. You should be able to switch between Powerlevel9k and Powerlevel10k with no This is the goal. You should be able to switch between Powerlevel9k and Powerlevel10k with no
visible changes except for performance. There are, however, several differences. visible changes except for performance. There are, however, several differences.
* By default only git vcs backend is enabled in Powerlevel10k. If you need svn and hg, you'll * By default only git vcs backend is enabled in Powerlevel10k. If you need svn and hg, you'll
need to set `POWERLEVEL9K_VCS_BACKENDS`. See need to set `POWERLEVEL9K_VCS_BACKENDS`.
[extended configuration](https://github.com/romkatv/powerlevel10k/blob/master/EXTENDED_CONFIGURATION.md). * Powerlevel10k implements a few
[extensions](https://github.com/romkatv/powerlevel10k/blob/master/EXTENDED_CONFIGURATION.md). If
you use them, you'll get different prompt when you switch to Powerlevel9k. However, extensions
are designed with graceful degradation in mind, so your prompt will still be functional.
* Fewer configuration options can be changed after the theme is loaded. For example, if you * Fewer configuration options can be changed after the theme is loaded. For example, if you
decide to change background color of some segment in the middle of an interactive session, decide to change background color of some segment in the middle of an interactive session,
it may not work. it may not work.
@ -252,18 +238,6 @@ Did you change any `POWERLEVEL9K` options after the first prompt got rendered, p
your `~/.zshrc` and executing `source ~/.zshrc`? This isn't supported. You'll need to restart zsh your `~/.zshrc` and executing `source ~/.zshrc`? This isn't supported. You'll need to restart zsh
for configuration changes to take effect. Run `exec zsh` to do this without forking a process. for configuration changes to take effect. Run `exec zsh` to do this without forking a process.
### Are changes getting up/down-streamed?
Powerlevel10k regularly pulls changes from Powerlevel9k, so all bug fixes and new features that land
in Powerlevel9k will land here, too. This is a labor-intensive process because Powerlevel9k and
Powerlevel10k have very different code. Thankfully, there aren't many changes in Powerlevel9k.
Occasionally Powerlevel9k copies features and bug fixes from Powerlevel10k but this is happens
rarely.
Improvements to [libgit2](https://github.com/libgit2/libgit2/issues/5038)
might eventually be upstreamed. It's a very slow process.
### Is there an AUR package for Powerlevel10k? ### Is there an AUR package for Powerlevel10k?
Yes, [zsh-theme-powerlevel10k-git](https://aur.archlinux.org/packages/zsh-theme-powerlevel10k-git/). Yes, [zsh-theme-powerlevel10k-git](https://aur.archlinux.org/packages/zsh-theme-powerlevel10k-git/).
@ -295,7 +269,7 @@ echo 'source ~/powerlevel10k/powerlevel10k.zsh-theme' >>! ~/.zshrc
This method of installation won't make anything slower or otherwise sub-par. This method of installation won't make anything slower or otherwise sub-par.
### What is the minimum supported zsh version? ### What is the minimum supported ZSH version?
ZSH 5.1 or newer should work. ZSH 5.1 or newer should work.

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