Currently the handle counts for a process are supported only on Windows with Processes Probe. https://docops.ca.com/ca-unified-infrastructure-management-probes/ga/en/alphabetical-probe-articles/processes-process-monitoring/processes-process-monitoring-release-notes
File descriptors (FDs) on Unix are analogous to handles on Windows, and both can be passed between processes despite of some differences. The number of open files for processes may impact Unix/Linux server performance.
I propose the idea to support to monitor # of file descriptors(fd) for Linux/Unix just like process handles count on windows.