In many cases you do not know exact files list on remote machine you want to freq from. Because files can be updated there. It is useful to run cron-ed job on it to create files listing you can freq and search for files in it:
0 4 * * * cd /storage ; tmp=`mktemp` ; \
tree -f -h -N --du --timefmt \%Y-\%m-\%d |
zstdmt -19 >$tmp && chmod 644 $tmp && mv $tmp TREE.txt.zst ; \
tree -J -f --timefmt \%Y-\%m-\%d |
zstdmt -19 >$tmp && chmod 644 $tmp && mv $tmp TREE.json.zst