The processor process is currently executing on. The scheduling class of the process. Many processes can be attached to the same lnode. All the processes attached to an lnode are collectively subject to the lnode's memory and process limits. Each lnode is addressed by a unique key which is a UID number.
Some data printed for defunct processes is irrelevant.
If no termlist , proclist , uidlist , or grplist is specified, ps checks stdin , stdout , and stderr in that order, looking for the controlling terminal and attempts to report on processes associated with the controlling terminal. In this situation, if stdin , stdout , and stderr are all redirected, ps does not find a controlling terminal, so there is no report.