Entry processes are the number of processes that access your site. If a user accesses a page of your site, that’s a single entry process. This also includes SSH and cron jobs. If it exceeds the maximum entry process, you will most likely receive an error 508 when the page is accessed. This process ends so quickly that the only possibility you may have an error is when you have many users accessing the same page at the same time.
Number Of Processes
This is the same as the entry processes, except that it includes all processes generated by the account/site rather than the specific page, SSH or cron jobs. If the number of process has been exceeded, this will show error 500 or error 503 when the the site is accessed.