IV76967: DUPLICATE % ON HPROF CPU SAMPLES REPORT

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: N/A
  .
  The CPU samples report generated by the HPROF profiler with the
  JVM
  option -Xrunhprof:cpu=samples,interval=100,file=... produces too
  many
  percent signs (%% instead of %).
  
  
  
  CPU SAMPLES BEGIN (total = 975) Mon Aug 25 14:11:40 2014
  
  rank self accum count trace method
  
  1 60.00%% 60.00%% 585 300263
  java.io.FileOutputStream.writeBytes
  2 14.56%% 74.56%% 142 300289 com.ibm.jzos.Bsam.writeBlock
  
  3 8.51%% 83.08%% 83 300103 com.ibm.jzos.Bsam.readBlock
  
  4 7.18%% 90.26%% 70 300293
  java.io.FileInputStream.readBytes
  
  
  According to the documentation, it should be only one. (see IBM
  SDK,
  Java Technology Edition 6.0.0 > Diagnostic guide for IBM SDK,
  Java
  Technology Edition, Version 6 > Using diagnostic tools > Using
  the
  HPROF Profiler > Explanation of the HPROF output file, at the
  bottom
  of the page)
  
  
  
  CPU SAMPLES BEGIN (total = 714) Fri Aug 30 15:37:16 2002
  
  rank self accum count trace method
  
  1 76.28% 76.28% 501 77 MyThread2.bigMethod
  
  2 6.92% 83.20% 47 75 MyThread2.smallMethod
  

Local fix

Problem summary

• Hprof internally uses a function which uses %x as format
  specifier and hence used %% in order to differentiate it from
  the regular format specifier. However, the function was later
  modified to use another function which do not use %x as format
  specifier and hence %% was treated as the regular text.
  

Problem conclusion

• The JDK has been updated to avoid the duplicate % in the Hprof
  output.
  .
  This APAR will be fixed in the following Java Releases:
   8 SR3 FP12 (8.0.3.12)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
   https://www.ibm.com/developerworks/java/jdk/
  

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:

• Fixed component name

  JAVA CLASS LIBS

• Fixed component ID

  620700130

Applicable component levels

• R800 PSY

     UP