How is the %commit column from `sar` calculated in RHEL 6 & RHEL7?

Solution Verified - Updated -

Issue

  • How is the %commit column from sar calculated in RHEL 6? For instance:
# sar -r
02:09:01 AM kbmemfree kbmemused  %memused kbbuffers  kbcached  kbcommit   %commit
02:14:01 AM      5768    494724     98.85     21892    291660    315532     30.79
02:15:02 AM     76776    423716     84.66     15268    242308    306216     29.88
02:16:01 AM     73012    427480     85.41     16052    246824    302776     29.55
Average:        19728    480764     96.06     25928    289356    297102     28.99

Environment

  • Red Hat Enterprise Linux 6.x
  • Red Hat Enterprise Linux 7.x
  • sysstat 9* series

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