JR48844: HIGH CPU USAGE AND INEFFICIENT BEHAVIOR WHEN USING REST APIs THAT USE THE DATATYPEFACTORY CLASS.

Version 8.5 Refresh Pack 5 for the IBM Business Process Manager products
Download Version 8.0.1 Fix Pack 3 for the IBM Business Process Manager products

APAR status

• Closed as program error.

Error description

• There are performance issues, specifically high CPU usage,
  that occur with certain REST APIs such as TaskSocialResource,
  which uses the newInstance method on the
  javax.xml.datatype.DatatypeFactory class.
  
  The following REST APIs are noted to have performance issues:
  
  v1/process/<instance-id>?action=update
  v1/task/<task-id>?action=update
  v1/performance/query
  v1/social/instance/<instance-id>/stream
  v1/social/task/<task-id>/stream
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  IBM Business Process Manager V8.0.1.0       *
  *                  Advanced, Standard, and Express.            *
  ****************************************************************
  * PROBLEM DESCRIPTION: High CPU usage and inefficient          *
  *                      behavior might result from using REST   *
  *                      APIs that use the newInstance method    *
  *                      on the                                  *
  *                      javax.xml.datatype.DatatypeFactory      *
  *                      class.                                  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  IBM BPM REST APIs that use the
  javax.xml.datatype.DatatypeFactory.newInstance() method could
  experience performance issues if they are called frequently.
  The javax.xml.datatype.DatatypeFactory.newInstance() is
  inefficient because it reads classes from the file system on
  every request.
  

Problem conclusion

• A fix is available that reduces the number of calls to the
  javax.xml.datatype.DatatypeFactory.newInstance() method.
  
  On Fix Central (http://www.ibm.com/support/fixcentral), search
  for JR48844:
  
  1.Select the product group, product, installed version, and
  platform, and click Continue.
  2.Select APAR or SPR, enter JR48844, and click Continue.
  
  When downloading fix packages, ensure that you also download
  the readme file for each fix. Review each readme file for
  additional installation instructions and information about the
  fix.
  

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

  BPM ADVANCED

• Fixed component ID

  5725C9400

Applicable component levels

• R800 PSY

     UP