I'm currently load testing a system using Apache JMeter. I am interested in JVM properties, so I added a script to the server -XX:+PrintGC -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:"FILE_DESTINATION" to get such informations.
I have three thread groups: 100, 500 and 1000 concurrent users.
1) I would like to know if it is a good idea deleting the content of the log file after each group execution or not, so each log reflects the JVM statistics of that group?
2) Is there a needed interval between one thread group execution and another ?
Thanks !