Parallel Disk Usage (pdu)

Highly parallelized, blazing fast directory tree analyzer.

Description

pdu is a CLI program that renders a graphical chart for disk usages of files and directories, it is an alternative to dust and dutree.

Benchmark

The benchmark was generated by a GitHub Workflow and uploaded to the release page.

Programs

• pdu v0.20.0
• dust v1.2.1
• dua v2.30.1
• ncdu
• gdu v5.31.0
• du

benchmark results (lower is better)

(See more)

Demo

Features

• Very fast.
• Relative comparison of separate files.
• Extensible via the library crate or JSON interface.
• Unbiased regarding hardlinks: All hardlinks are treated as equally real.
• Optional hardlink detection and deduplication (would make pdu proportionally slower).
• Optional progress report (would make pdu slightly slower).
• Customize tree depth.
• Customize chart size.

Limitations

• Ignorant of reflinks (from COW filesystems such as BTRFS and ZFS).
• Do not follow symbolic links.
• Do not differentiate filesystem: Mounted folders are counted as normal folders.
• The runtime is optimized at the expense of binary size.

Development

Prerequisites

• cargo

Test

./test.sh && ./test.sh --release

Environment Variables

name	type	default value	description
FMT	true or false	true	Whether to run cargo fmt
LINT	true or false	true	Whether to run cargo clippy
DOC	true or false	false	Whether to run cargo doc
BUILD	true or false	true	Whether to run cargo build
TEST	true or false	true	Whether to run cargo test
BUILD_FLAGS	string	(empty)	Space-separated list of flags for cargo build
TEST_FLAGS	string	(empty)	Space-separated list of flags for cargo test

Run

./run pdu "${arguments[@]}"

• "${arguments[@]}": List of arguments to pass to pdu.

Build

Debug build

cargo build --bin pdu

The resulting executable is located at target/debug/pdu.

Release build

cargo build --bin pdu --release

The resulting executable is located at target/release/pdu.

Update shell completion files

./generate-completions.sh

Extending parallel-disk-usage

The parallel-disk-usage crate is both a binary crate and a library crate. If you desire features that pdu itself lacks (that is, after you have asked the maintainer(s) of pdu for the features but they refused), you may use the library crate to build a tool of your own. The documentation for the library crate can be found in docs.rs.

Alternatively, the pdu command provides --json-input flag and --json-output flag. The --json-output flag converts disk usage data into JSON and the --json-input flag turns said JSON into visualization. These 2 flags allow integration with other CLI tools (via pipe, as per the UNIX philosophy).

Beware that the structure of the JSON tree differs depends on the number of file/directory names that were provided (as CLI arguments):

• If there are only 0 or 1 file/directory names, the name of the tree root would be a real path (either . or the provided name).
• If there are 2 or more file/directory names, the name of the tree root would be (total) (which is not a real path), and the provided names would correspond to the children of the tree root.

Installation

Any Desktop OS

From GitHub

Go to the GitHub Release Page and download a binary.

From crates.io

Prerequisites:

• cargo

cargo install parallel-disk-usage --bin pdu

Arch Linux

From the Official Repository

sudo pacman -S parallel-disk-usage

Distributions

Similar programs

• CLI:
  • du
  • dust
  • dutree
  • dua
• TUI:
  • ncdu
  • gdu
  • godu
• GUI:
  • GNOME's Disk Usage Analyzer, a.k.a. baobab
  • Filelight

License

Apache 2.0 © Hoàng Văn Khải.