pin None, if you use ninja+meson; yes, if you compile it my way. But, in either case, right now, it's a hack. You have to supply the process list using ps -Ac -o pid= -o ppid= -o pcpu= -o rss= -o comm= | pscircle --stdin=true ... because it segfaults reading the /proc filesystem.
I'll see if I can teach it the native way of reading the proc. list, then I'll hand it over to you. (This will need patches.)
EDIT: Even with ninja/meson you need to change PSC_ANCHOR_PROC_NAME in config.h from "kthreadd" to "system" (for NetBSD; FreeBSD needs"kernel").
