Snap traces

Snap traces are controlled by -Xdump. They contain the tracepoint data held in the trace buffers.

The example below shows the production of a snap trace.

java -Xgcpolicy:metronome -Xdump:snap:events=vmstop -version

	JVMDUMP006I Processing dump event "vmstop", detail "#00000000" - please wait.
	JVMDUMP007I JVM Requesting Snap dump using '/home/user/Snap.20090603.063646.315586.0001.trc'
	JVMDUMP010I Snap dump written to /home/user/Snap.20090603.063646.315586.0001.trc
	JVMDUMP013I Processed dump event "vmstop", detail "#00000000".

Snap traces require the use of the trace formatter for further analysis.

See Using the trace formatter for more information about analyzing a snap trace.



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