docs

README.md

@@ -4,25 +4,32 @@ Powerlevel10k is a theme for ZSH. It's a backward-compatible fork of
 [Powerlevel9k](https://github.com/bhilburn/powerlevel9k) with lower latency and better
 prompt responsiveness.
 
-If you like the look and feel of Powerlevel9k but feeling frustrated by the
-slow prompt, simply replace your `powerlevel9k` theme with `powerlevel10k` and
-enjoy responsive shell like it's 80's again!
+If you like the looks of Powerlevel9k but feeling frustrated by its slow prompt,
+simply replace your `powerlevel9k` theme with `powerlevel10k` and enjoy responsive
+shell like it's 80's again!
 
 Powerlevel10k uses the same configuration options as Powerlevel9k and produces the
 same results. It's simply faster. There is no catch.
 
 If you are on Linux or WSL, consider enabling [gitstatus](https://github.com/romkatv/gitstatus)
-plugin for massive performance improvement in vcs/prompt segment. It works well with Powerlevel10k.
+plugin for massive performance improvement in the vcs/prompt segment.
 
 ## Installation & Configuration
 
-For installation and configuration instructions, see
+For installation and configuration instructions see
 [Powerlevel9k](https://github.com/bhilburn/powerlevel9k). Everything in there applies to
-Powerlevel10k as well. Follow the installation guide, make sure everything works and you like
-the way prompt looks. Then simply replace `powerlevel9k.zsh-theme` with the one from Powerlevel10k
-([link](https://github.com/romkatv/powerlevel10k/blob/master/powerlevel9k.zsh-theme)). Or replace
-the whole `powerlevel9k` directory to gain the ability to `git pull` updates in the future. Once
-you restart zsh, your prompt will be faster.
+Powerlevel10k as well. Follow the official installation guide, make sure everything works
+and you like the way prompt looks. Then simply replace file `powerlevel9k.zsh-theme` with
+the one from Powerlevel10k
+([link](https://github.com/romkatv/powerlevel10k/blob/master/powerlevel9k.zsh-theme)).
+Or replace the whole `powerlevel9k` directory to gain the ability to `git pull` updates
+in the future. Once you restart zsh, your prompt will be faster.
+
+```zsh
+# Assuming oh-my-zsh at the standard location. Adjust to your circumstances.
+rm -rf ~/.oh-my-zsh/custom/themes/powerlevel9k
+git clone git@github.com:romkatv/powerlevel10k.git ~/.oh-my-zsh/custom/themes/powerlevel9k
+```
 
 **Do not load both Powerlevel9k and Powerlevel10k themes at the same time. Variable name
 clashes will cause mayhem. Source either one or the other. Consider Powerlevel10k
@@ -30,15 +37,59 @@ a patched fork of Powerlevel9k, which it is.**
 
 ## How fast is it?
 
-Powerlevel10k with [gitstatus](https://github.com/romkatv/gitstatus) renders prompt 5+ times
-faster than Powerlevel9k. In some cases it can be over 10 times faster. When using Linux,
-you should expect less than 50ms prompt latency in most cases, about 100ms in large git
-repos and 200ms in huge repos such as Linux kernel. To get comfortable upper bound on
-latency in any repo, set `GITSTATUS_DIRTY_MAX_INDEX_SIZE=4096`. It'll disable dirty file
-scanning in repos with over 4k files. This should give you under 100ms prompt latency
-everywhere.
+Powerlevel10k with [gitstatus](https://github.com/romkatv/gitstatus) renders prompt about
+10 times faster than powerlevel9k/master (stable version) and about 4 times faster than
+powerlevel9k/next (beta version). Powerlevel10k is faster than Powerlevel9k even without
+[gitstatus](https://github.com/romkatv/gitstatus) but the difference isn't as dramatic.
+
+Here's are benchmark results obtained with
+[zsh-prompt-benchmark](https://github.com/romkatv/zsh-prompt-benchmark) on Intel i9-7900X
+running Ubuntu 18.04.
+
+| Theme                      | /      | ~/testrepo | ~/nerd-fonts | ~/linux |
+|----------------------------|-------:|-----------:|-------------:|--------:|
+| powerlevel9k/master        | 135 ms |     207 ms |       234 ms | 326 ms  |
+| powerlevel9k/next          |  47 ms |     101 ms |       122 ms | 213 ms  |
+| powerlevel10k w/ vcs_info  |  24 ms |      82 ms |       104 ms | 197 ms  |
+| powerlevel10k w/ gitstatus |  11 ms |      14 ms |        31 ms |  76 ms  |
+| naked zsh                  |   1 ms |       1 ms |         1 ms |   1 ms  |
+
+Columns define the current directory where the prompt was rendered.
+
+  * `/` -- root directory, not a git repo.
+  * `~/testrepo` -- a tiny git repo.
+  * `~/nerd-fonts` -- [nerd-fonts](https://github.com/ryanoasis/nerd-fonts) git repo
+    with 4k files.
+  * `~/linux` -- [linux](https://github.com/torvalds/linux) git repo. Huge.
+
+Here's how the prompt looked like:
+
+![](https://raw.githubusercontent.com/romkatv/powerlevel10k/master/prompt.png)
+
+Configuration that was used during benchmarking:
+
+```zsh
+POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(dir_writable dir vcs)
+POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS=(status background_jobs time custom_rprompt)
+
+POWERLEVEL9K_MODE=nerdfont-complete
+POWERLEVEL9K_PROMPT_ON_NEWLINE=true
+POWERLEVEL9K_CUSTOM_RPROMPT=custom_rprompt
+POWERLEVEL9K_ROOT_ICON=\\uF09CPOWERLEVEL9K_TIME_ICON=\\uF017
+POWERLEVEL9K_CUSTOM_RPROMPT_ICON=\\uF005
+POWERLEVEL9K_TIME_BACKGROUND=magenta
+POWERLEVEL9K_CUSTOM_RPROMPT_BACKGROUND=blue
+POWERLEVEL9K_STATUS_OK_BACKGROUND=grey53
+POWERLEVEL9K_BACKGROUND_JOBS_BACKGROUND=orange1
+POWERLEVEL9K_BACKGROUND_JOBS_FOREGROUND=black
+
+# Powerlevel10k extension to enable gitstatus. Has no effect on Powerlevel9k.
+POWERLEVEL9K_VCS_STATUS_COMMAND=gitstatus_query_dir
+
+function custom_rprompt() echo -E "hello world"
+```
 
 ## What's the catch?
 
-Really, there is no catch. It's the same prompt with the same flexibility and literally the
-same configuration as Powerlevel9k but **much faster**.
+Really, there is no catch. It's literally the same prompt with the same flexibility
+configuration format as Powerlevel9k. But **much faster**.