gvfsd-metadata process was running for a whole day hogging 100% of a single core of my CPU. Is there any reason for it to do it?
gvfsd-metadata is a process that collects file metadata when you use Nautilus. If your metadata store got corrupted somehow, it might get stuck on an infinite loop. So you'll have to kill that process, and remove the metadata store.
pkill gvfsd-metadata rm -rf .local/share/gvfs-metadata