Forum Discussion

symsonu's avatar
symsonu
Level 6
10 years ago

False reporting by VCS Host Monitor

    May 25 03:54:10 node-02 Had[8671]: [ID 702911 daemon.notice] VCS CRITICAL V-16-1-50086 CPU usage on node-02 is 91% May 25 03:55:09 node-02 Had[8671]: [ID 702911 daemon.notice] VCS CRITIC...
business continuity
Cluster Server
Solaris
Troubleshooting
  • mikebounds's avatar
    mikebounds
    10 years ago

    Sorry, should have seen that you systems are 5.1 and vcsstatlog is only from 6.1 onwards, but theory is still the same - VCS looks at stats more frequently than 5 mins (I think 30 seconds in 5.1) so VCS will spot peaks in CPU usage over short periods which are averaged out in 5 mins which you see in sar.

    So if this is happening a lot, then run a sar at 30 second intervals so you can verify it agrees with VCS (note as it will hard to get the same starting point as VCS, the values may differ slightly, but should be roughly the same)

    Mike

mikebounds's avatar
mikebounds
Level 6
10 years ago

Sorry, should have seen that you systems are 5.1 and vcsstatlog is only from 6.1 onwards, but theory is still the same - VCS looks at stats more frequently than 5 mins (I think 30 seconds in 5.1) so VCS will spot peaks in CPU usage over short periods which are averaged out in 5 mins which you see in sar.

So if this is happening a lot, then run a sar at 30 second intervals so you can verify it agrees with VCS (note as it will hard to get the same starting point as VCS, the values may differ slightly, but should be roughly the same)

Mike