iotop

What iotop is

iotop is a Linux program that shows which processes are using high amounts of input/output requests and lists them by I/O usage. Its display can show accumulated I/O or bandwidth, with optional columns for read, write, swap-in, and I/O percentage. Users can focus monitoring on selected process IDs or users, or view processes and threads across the machine. It offers interactive and batch modes, configurable delays, iteration counts, and timestamps in batch output. Command-line filters can narrow the display by TID or by command using a regular expression. The project lists package or installation instructions for Debian-derived distributions, Fedora, CentOS/RHEL, Void, Arch, and Alpine Linux, and documents building from source with make after installing development dependencies. iotop is free under the GPL-2.0+ license. Installing and running it requires root access. The releases page lists version 1.31 as the latest release; the tag has a verified committer signature, but the signing key has expired. The project recommends GitHub pull requests and points to the #iotop channel on Libera.Chat for community discussion.