-s option

Collect synchronization wait tracing data. The allowed values of option are:

• all– Enable synchronization wait tracing with a zero threshold. This option forces all synchronization events to be recorded.

• calibrate– Enable synchronization wait tracing and set the threshold value by calibration at runtime. (Equivalent to on.)

• off– Disable synchronization wait tracing.

• on– Enable synchronization wait tracing with the default threshold, which is to set the value by calibration at runtime. (Equivalent to calibrate.)

• value– Set the threshold to value, given as a positive integer in microseconds.

Synchronization wait tracing data is not recorded for Java programs; specifying it is treated as an error.