PM09564: SLOW APPLICATION DEPLOYMENT RESULTING FROM ZIP FILE DECOMPRESSION

6.1.0.33: Java SDK 1.5 SR12 FP1 Cumulative Fix for WebSphere
6.1.0.35: Java SDK 1.5 SR12 FP2 Cumulative Fix for WebSphere
6.1.0.37: Java SDK 1.5 SR12 FP3 Cumulative Fix for WebSphere
6.1.0.47: WebSphere Application Server V6.1 Fix Pack 47
6.1.0.39: Java SDK 1.5 SR12 FP4 Cumulative Fix for WebSphere Application Server
6.1.0.41: Java SDK 1.5 SR12 FP5 Cumulative Fix for WebSphere Application Server
6.1.0.43: Java SDK 1.5 SR13 Cumulative Fix for WebSphere Application Server
6.1.0.45: Java SDK 1.5 SR14 Cumulative Fix for WebSphere Application Server
6.1.0.47: Java SDK 1.5 SR16 Cumulative Fix for WebSphere Application Server

APAR status

• Closed as program error.

Error description

• Slow application deployment resulting from zip file
  decompression.  The following thread was found to be the major
  contributor to the slow deployment:
  
  "WebContainer : " daemon prio= tid= nid=
  
  runnable []
      at java.util.zip.Inflater.inflateBytes(Native Method)
      at java.util.zip.Inflater.inflate(Inflater.java:215)
      - locked <> (a java.util.zip.Inflater)
      at
  java.util.zip.InflaterInputStream.read(InflaterInputStream.java:
  128)
      at
  java.util.zip.ZipInputStream.read(ZipInputStream.java:139)
      at
  java.util.zip.ZipInputStream.closeEntry(ZipInputStream.java:91)
      at
  java.util.zip.ZipInputStream.getNextEntry(ZipInputStream.java:69
  )
      at
  org.eclipse.jst.j2ee.commonarchivecore.internal.strategy.NestedA
  rchiveLo
  adStrategyImpl.getZipInputStreamSkippedTo(NestedArchiveLoadStrat
  egyImpl.
  java:209)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Slow application deployment resulting   *
  *                      from zip file                           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Application deployment becomes very slow when it contains
  nested jar/zip files.
  

Problem conclusion

• Obtaining input streams from nested archives is expensive
  because the archive must be decompressed.  By expanding the
  file to temporary storage this overhead can be avoided and
  performance improved.
  
  To disable this feature, use the following custom JVM property
  setting:
  
  com.ibm.config.eclipse.wtp.dynamic.expansion=false
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 6.1.0.33.  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

• R61A PSY

     UP

• R61H PSY

     UP

• R61I PSY

     UP

• R61P PSY

     UP

• R61S PSY

     UP

• R61W PSY

     UP

• R61Z PSY

     UP