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is optimized and nothing unnecessary is done in between (it takes about 2-5ms on an idle Raspberry Pi to set all 17 ports, some artificial load (e.g.'find /' in the background) will slow it down to 10-15ms).
* Cronjobs (exact to the second) for output ports are based on [quartz-scheduler.org](http://quartz-scheduler.org/documentation/quartz-2.1.x/tutorials/crontrigger). Output ports can be set conditionally and you have a simple but powerful semaphore mechanism.
* You may define your own variables with a prefix VIRTUAL which are persisted in memory (unknown virtual variables default to "0").
* If GPIO ports are used to represent binary output values, blocking single ports is dangerous: Delayed/Queue requests
+# remote debugging parameter java -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5005 \