Release / 26 Dec 2025

btop v1.4.6

Change a process's priority (renice) without leaving btop.

All of btop

Before you upgrade to v1.4.6

1 to fix

Building from source now needs a C++23 compiler: GCC 14 or Clang 19 or newer.

Action requiredAffects: People building btop from source

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What changed in v1.4.6

Renice processes, pause the process list, CPU frequency display modes, choose which GPU vendors to enable, container-aware CPU counts, `--themes-dir` and `--default-config` flags, and a `save_config_on_exit` option.

Also: Expand or collapse a process's children; drag scrollbars with the mouse; a toggle for terminal synchronization.

v1.4.6. Building needs GCC 14 or Clang 19 (C++23).

Fixed and improved

Renice processes, pause the list while you look, and toggle a process's children in tree view.

ImprovedFilter, sort and view processes as a tree, see details of one, and send it any signal.

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CPU frequency display modes; inside containers the CPU count follows cgroup limits and the container engine is shown.

ImprovedSee CPU, memory, disk I/O and network usage in one terminal view with auto-scaling graphs.

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Choose which GPU vendors btop enables.

ImprovedShow GPU usage, memory and power on Linux in boxes toggled with keys 5 to 0.

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`--themes-dir` loads themes from another folder, `--default-config` prints the default config, and `save_config_on_exit` controls whether menu changes are saved.

ImprovedChange every option from an in-app menu, pick themes and graph symbols, and switch between saved layout presets.

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Seeded by @iluxav with Claude Code (canido), from the release's public sources. Each change links to its evidence.