zsh-bench VS pure

Someone's made a benchmarking system for zsh: https://github.com/romkatv/zsh-bench#premade-configs

Of course, their config is the best according to the benchmark (and ohmyzsh is the slowest option), but DIY configs are also covered, particularly possible performance optimizations.

Unfortunately, running exit is not a great strategy for running benchmarks. For zsh specifically, plugin managers are optimized for fast exit.

romkatv did a great write-up and benchmark within the context of zsh[0]. It's a great read.

[0] https://github.com/romkatv/zsh-bench#how-not-to-benchmark

Given the addition of async rendering in the latest release of spaceship, I wasn't sure whether I should include performance in the list of features found in powerlevel10kbut but not in spaceship. I used zsh-bench to benchmark powerlevel10k on my laptop running on battery (I'm writing this on a train) with a config that makes powerlevel10k looks similar to spaceship. I simply ran p10k configure and chose what looked most similar: Lean Style, UNICODE, 256 colors, two lines, etc. Here are the benchmark results:

Obligatory link since you are engaging in profiling interactive zsh: https://github.com/romkatv/zsh-bench.

1.) It's fast. Like, really fast. 1.) It supports deferred loading via zsh-defer 1.) It supports local plugins as well as ones hosted via a git provider (aka: GitHub, GitLab, BitBucket, etc) 1.) The codebase is simple and easy to understand and contribute to 1.) It supports git branches (with tag/shas on the roadmap) 1.) It supports partial plugin loading such as loading Oh-My-Zsh plugins and Prezto modules without loading the whole framework. 1.) There's an easy migration path from legacy plugin managers like Antigen/Antibody. 1.) Plugins are managed via a simple plugins file that makes it easy to share your config with others. 1.) And lots more

In any case, slow zsh startup is always caused by whatever you put in zsh startup files and it's always possible to reduce zsh startup to imperceptible levels without sacrificing any functionality by editing said startup files. There is a bit of info on interactive zsh performance at https://github.com/romkatv/zsh-bench.

Why is this a good thing? Is this a proxy for performance? If so, you can measure performance directly with zsh-bench. This way you can describe the advantage in terms that have real value to end users. For example, you can say that the first prompt appears N milliseconds faster when using Zpy than if you were using something-else.

Beyond zprof (https://www.bigbinary.com/blog/zsh-profiling) not really I'm afraid. I did the majority of my zsh-prompt hacking 10 years ago and haven't thought about it since. That snippet could be from anywhere.

You could peek at something like zprezto https://github.com/sorin-ionescu/prezto or pure https://github.com/sindresorhus/pure for tips.

Fetching git/hg/... info is always slow, so try and speed that up where you can (as to how to do that, uhh... I know my prompt has a dirty-state check nicked from pure for speed reasons). You can also cache any `asdf init zsh` or similar to a file and do the same "run in background" trick so the next shell will have any changes.

The biggest improvement I can remember was dropping zprezto for my own much smaller config, I really did not need much comparatively. Mostly some git info and "good default" options. I use zgenom for a plugin manager but only have 3 plugins, probably I should just dump it and inline the plugins to avoid getting owned one day.

Run p10k configure and choose Lean style. Pure style is inferior in all respects. It exists to make https://github.com/sindresorhus/pure users feel at home.

git clone "$HOME/.zsh/pure" downloads Pure from GitHub. Here we tell git where to download from ("https://github.com/sindresorhus/pure.git") and where to put the downloaded files ("$HOME/.zsh/pure")

I've been using pure theme for a few years and absolutely love it. It shows me everything I need, but doesn't feel cluttered.

It uses 2 lines, which is actually really nice. It gives space to show where you are and git status/branch, while still allowing you to write long commands.

https://github.com/sindresorhus/pure

I’ve always been pretty happy with https://github.com/sindresorhus/pure

hey I am trying to install the Pure prompt but I am unable to do so using npm I tried to find an alternative made for oh my zsh method so I tried to do this but it results in an error saying that the pure theme can not be found even though I can see the symlink in the themes folder all I did different from this was to clone it into the themes folder so please help thanks in advance

My favorite for this purpose is pure prompt: https://github.com/sindresorhus/pure

I wasn’t sure about multi line at first, but really digging it now.

https://github.com/sindresorhus/pure has been my go-to for years. Haven't found a reason to change.