title: what is CMPRS in top command in MAC OS X 10.10.2?
body: <p>What is CMPRS in this top command output???</p>
  
  <pre><code>Processes: 264 total, 2 running, 9 stuck, 253 sleeping, 1229 threads
  2015/04/13 17:17:48
  Load Avg: 1.00, 1.22, 1.24 
  CPU usage: 6.36% user, 21.81% sys, 71.81% idle 
  SharedLibs: 14M resident, 16M data, 0B linkedit.
  MemRegions: 120250 total, 3283M resident, 82M private, 540M shared.
  PhysMem: 7711M used (1109M wired), 478M unused.
  VM: 693G vsize, 1068M framework vsize, 680833(0) swapins, 842308(0) swapouts.
  Networks: packets: 3/224B in, 2/196B out.
  Disks: 0/0B read, 0/0B written.
  
  PID    COMMAND          %CPU TIME     #TH  #WQ #PORTS MEM    PURG   CMPRS  PGRP  PPID  STATE    BOOSTS     %CPU_ME %CPU_OTHRS UID FAULTS    COW    MSGSENT    MSGRECV    SYSBSD    SYSMACH   CSW        PAGEINS IDLEW POWER USER            #MREGS RPRVT  VPRVT  VSIZE  KPRVT  KSHRD 
  98414  diskmanagementd  0.0  00:00.50 0    0   0      0B     0B     0B     98414 1     sleeping *0[0]      0.00000 0.00000    0   0         0      0          0          0         0         0          0       0     0.0   root            0      -96K   -32M   0B     0B     0B    
  96595  periodic-wrapper 0.0  00:00.03 0    0   0      0B     0B     0B     96595 1     sleeping *0[0]      0.00000 0.00000    0   0         0      0          0          0         0         0          0       0     0.0   root            0      -16K   -16M   0B     0B     0B    
  </code></pre>
  
  <p>Command I am using is top -d -r -l 0 -s  0.</p>