PM41601: BOTTLENECK IN WEBCONTAINER CODE WHEN UNDER HEAVY LOAD.

8.0.0.1: WebSphere Application Server V8.0 Fix Pack 1
8.0.0.2: WebSphere Application Server V8.0 Fix Pack 2
8.0.0.3: WebSphere Application Server V8.0 Fix Pack 3
8.0.0.4: WebSphere Application Server V8.0 Fix Pack 4
8.0.0.5: WebSphere Application Server V8.0 Fix Pack 5
8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15

APAR status

• Closed as program error.

Error description

• Bottleneck in webcontainer code when under heavy load.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  IBM WebSphere Application Server V8.0       *
  *                  users                                       *
  ****************************************************************
  * PROBLEM DESCRIPTION: Users can experience slower than        *
  *                      expected response times when making     *
  *                      http servlet requests.                  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Under high server load, multiple servlet requests can contend
  for a singular object, thus causing slower response times.
  

Problem conclusion

• Webcontainer code changes have been made to allow multiple
  requests to not be in contention for the same object.
  The fix for this APAR is currently targeted for inclusion in
  fix pack 8.0.0.1.  Please refer to the Recommended
  Updates page for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels

• R800 PSY

     UP