Java Reference
In-Depth Information
Table A-10. Flags for Java Flight Recorder
Flag
What it
does
When to use it
See
also
Enables Java
Flight Re-
corder.
Enabling Flight Recorder is always recommended,
as it has very little overhead unless an actual re-
cording is happening (in which case, the overhead
will vary depending on the features used, but still
be relatively small).
Java
Flight
Recorder
-XX:+FlightRecorder
Sets options
for a default
recording via
the command
line.
Control how a default recording can be made for
the JVM.
Java
Flight
Recorder
-XX:+FlightRecorderOptions
Allows the
JVM to use
commercial
(non-open-
source) fea-
tures.
If you have the appropriate license, setting this flag
is required to enable Java Flight Recorder.
Java
Flight
Recorder
-
XX:+UnlockCommercialFeatures
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