time: I/O Resources

 
 1.2.3 I/O Resources
 -------------------
 
 'F'
      Number of major, or I/O-requiring, page faults that occurred while
      the process was running.  These are faults where the page has
      actually migrated out of primary memory.
 
 'R'
      Number of minor, or recoverable, page faults.  These are pages that
      are not valid (so they fault) but which have not yet been claimed
      by other virtual pages.  Thus the data in the page is still valid
      but the system tables must be updated.
 
 'W'
      Number of times the process was swapped out of main memory.
 
 'c'
      Number of times the process was context-switched involuntarily
      (because the time slice expired).
 
 'w'
      Number of times that the program was context-switched voluntarily,
      for instance while waiting for an I/O operation to complete.
 
 'I'
      Number of file system inputs by the process.
 
 'O'
      Number of file system outputs by the process.
 
 'r'
      Number of socket messages received by the process.
 
 's'
      Number of socket messages sent by the process.
 
 'k'
      Number of signals delivered to the process.