Rolling garbage collector logs in java

Question

Is it possible to do a rolling of garbage collector logs in Sun JVM?

Currently I generate logs using:

-XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:         


        

Answer 1

Built-in support for GC log rotation has been added to the HotSpot JVM. It is described in the RFE 6941923 and is available in:

• Java 6 Update 34
• Java 7 Update 2 (but there is no reference to it in these release notes)

There are three new JVM flags that can be used to enable and configure it:

• -XX:+UseGCLogFileRotation
  must be used with -Xloggc:;
• -XX:NumberOfGCLogFiles=
  must be >=1, default is one;
• -XX:GCLogFileSize=M (or K)
  default will be set to 512K.