Another tip not listed on the site: Use faster disks. I moved my poudriere jails to zfs on an nvme disk, and it sped things up quite a bit.
Indeed- because that wouldn’t be about using the things you already have more efficiently, but throwing money at the problem.
filemon(4) looked neat, so I made a Ruby interface to it. Because why not.
Highlight: making a pointer to a stringified representation of an integer: ptr = [[fd].pack('I')].pack('P').unpack('j!').first. Eww.
ptr = [[fd].pack('I')].pack('P').unpack('j!').first
I kinda miss my FreeBSD days…