IBM WebSphere Application Server Performance Cookbook

WAS traditional on AIX Recipe

  1. Download aixperf.sh
  2. Edit aixperf.sh then change SCRIPT_SPAN to greater than or equal to the duration of the test. Also ensure JAVACORE_INTERVAL is changed so that SCRIPT_SPAN is evenly divisible by it. For example: 
    SCRIPT_SPAN=43200  
JAVACORE_INTERVAL=60
  3. Find the process IDs (PIDs) of each application server: ps -elf | grep java
  4. Start aixperf.sh as root: 
    # su  
# cd /var/tmp/  
# nohup ./aixperf.sh ${WASPIDS} &
  5. Reproduce the problem
  6. The aixperf.sh script will gather a tprof sample just once when it first starts. Also gather a tprof sample at the peak of the problem: 
    # su  
# cd /var/tmp/  
# LDR_CNTRL=MAXDATA=0x80000000 tprof -Rskex sleep 60 >> tprof.out 2>&1
  7. Once the reproduction is complete:
  8. If aixperf.sh hasn't completed, you can manually stop it:
    1. ps -elf | grep $(ps -elf | grep aixperf | grep -v grep) | awk '{print $4}' | xargs kill
    2. Gather any javacore*txt files produced in each WAS JVM's profile directory.
  9. Gather /var/tmp/aixperf/* and /var/tmp/tprof/*