atop vs Supervisor

atop is a free, GPL-licensed performance monitor for Linux. It uses a full-screen ASCII interface to report system and process activity at regular intervals. System-level views cover CPU, memory, swap, disk, and network activity. Process and thread views include CPU use, memory growth, disk use, and other statistics, including consumption by processes that finish during the interval. atop can save compressed raw counters for longer-term analysis, preserving daily logs for 28 days by default. The atopsar command turns those logs into system activity reports. It also reports CPU, memory, disk I/O utilization, and pressure for cgroup v2. An optional netatop kernel module adds per-process and per-thread TCP and UDP packet counts and bandwidth statistics. Displays can use bar graphs or detailed text, with columns adjusting to terminal width. Downloads list source and x86_64 RPM packages for version 2.13.0.

Supervisor is a free client/server system for starting, monitoring and controlling processes on UNIX-like operating systems. It can restart processes after crashes and report their status. Administrators set per-process options in an INI-style configuration file, including failed-process restarts and automatic log rotation. Priorities and groups let related processes be started or stopped together.

Control is available through a command-line client, an optional browser interface and an XML-RPC interface. The browser view can display and control process status when the HTTP server is enabled; authentication can be required for commands over UNIX-domain or TCP sockets. Supervisor also has an event-notification protocol usable by programs in any language and extension points for Python developers. It can be installed with pip or from a downloaded distribution, including on systems without internet access. It is intended for project- or customer-related processes, not as a replacement for init as process ID 1. It runs on supported UNIX-like systems and does not run under Windows.