PI10980: WebSphere eXtreme Scale apps in the same JVM as the servers see decreased performance and repeated CWOBJ9056 messages.

APAR status

• Closed as program error.

Error description

• Many CWOBJ9056 messages in logs, indicating new threads are
  started. The product should instead, utilize the thread pool.
  The result is decreased performance.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  When CWOBJ9056 messages are logged,         *
  *                  WebSphere eXtreme Scale starts new threads  *
  *                  instead of using thread pool. The result is *
  *                  decreased performance.                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Many CWOBJ9056 messages in the log      *
  *                      files indicate that new threads are     *
  *                      started which results in decreased      *
  *                      performance.                            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An internal optimization that was used for a local XIO request
  incorrectly disabled another optimization that was for
  selecting valid thread pools. As a result, no valid
  thread pool is found and the requests are handled in their
  own thread. This problem also resulted in CWOBJ9056
  message being logged.
  

Problem conclusion

• The local request optimization now correctly determines which
  thread pool is appropriate for the request and submits the
  request dispatch to the correct thread pool.
  

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

• Fixed component name

  WS EXTREME SCAL

• Fixed component ID

  5724X6702

Applicable component levels

• R860 PSY

     UP