ZZ00337: CS2 SERVER KEPT CRASHING WITH 100% CPU UTILIZATION

APAR status

• Closed as documentation error.

Error description

• On Central Server 2, CPU utilization reaches 100% and is not
  responsive.  To get services back running, CS2 needs to be
  rebooted.
  
  To resolve this issue, recommendation is to bump Memory for CS2
  to 24G.
  
  Following is the environment where this issue was seen (a large
  environment):
  
  SCO 2.3 FP1, iFix5
  Regions Servers: 11
  Availability Zones / Clusters: 100+
  SCO Managed VMs: 4,000+
  Total VMs: 20,000+
  

Local fix

• Increase memory on CS2 to 24G
  

Problem summary

• With the product deployed on a very large environment, the
  memory of the CS2 needs to be increased.
  

Problem conclusion

• The doc page
  
  
  http://eden2.tivlab.austin.ibm.com:8310/help/topic/com.ibm.sco.d
  oc_2.3/c_sw_prereqs.html
  
  needs to be changed accordingly.
  
  The following NOTE will be added:
  
  Note: For large deployments, the Virtual Image Library component
   located on Central
  Server 2 will consume more memory. If the memory required
  exceeds the real memory of
  the system, the system will start heavy paging activity leading
  to high system CPU
  utilization, and ultimately the system becoming unresponsive. To
  resolve this issue, the
  recommendation is to increase memory to 24 GB for Central Server
  2. For the change to
  take effect, Central Server 2 must be rebooted.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels