Per the attached screenshot of htop, about five minutes after I log in to Mint Linux 17.3 it automatically starts a background process for /usr/bin/find, USER nobody, at which point that process consumes 84-percent to 100-percent of the (virtual machine's) CPU. (At that point I can tell without using htop that the process has been started because the system barely responds to user commands...)
I tried using htop -> nice to set NI as high as 16 without apparent effect: The /usr/bin/find process continues to consume essentially all of the system's CPU cycles. The only way I've found to seize control back from this process is to KILL it.
I've searched for ways to manage this process so that it either (a) behaves nicely or (b) isn't started at all. The GUI tools I've tried don't list the runaway process. So I suspect there's a config file somewhere one must edit to make this process behave better but I don't know which file or what edits to apply.