snmp in Red Hat Enterprse Linux 5 shows zero values for CPU utilization after 30 days

Solution Verified - Updated -

Issue

  • snmp CPU usage is different from that shown in top
  • About every 30 days of running, all ssCpuIdle.0, ssCpuUser.0, and ssCpuSystem.0 will be printed as zero for a while (about 10 minutes) and after the period,  it will work fine again without any manual action.

Environment

  • Red Hat Enterprise Linux 5.5
  • net-snmp-5.3.2.2-9.el5

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