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# Description Following #15843, I have tinkered more with it and realized that there are plenty of features from [hyperfine](https://github.com/sharkdp/hyperfine) that could be implemented pretty easily. - `--warmup` flag to do `n` runs without benchmarking first, useful to fill disk cache ```nu @example "use --warmup to fill the disk cache before benchmarking" { bench { fd } { jwalk . -k } -w 1 -n 10 } ``` - `--setup`, `--prepare`, `--cleanup`, `--conclude` flags to run code before/after benchmarks ```nu @example "use `--setup` to compile before benchmarking" { bench { ./target/release/foo } --setup { cargo build --release } } @example "use `--prepare` to benchmark rust compilation speed" { bench { cargo build --release } --prepare { cargo clean } } ``` - `--ignore-errors` to ignore any errors in the benchmarked commands - benchmarked commands are now `| ignore` so that externals don't fill the screen
Nushell core libraries and plugins
These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.
Foundational libraries are split into two kinds of crates:
- Core crates - those crates that work together to build the Nushell language engine
- Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.
Plugins are likewise also split into two types:
- Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
- Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.