tools:monitor:start
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tools:monitor:start [2018/07/18 10:49] – [How to use the Timer] graf | tools:monitor:start [2020/08/12 09:59] – [How the Timer Works] ursgraf | ||
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It is often desirable to determine whether realtime performance criteria are met or how long a certain time domain takes to run. For this purpose each time domain as well as the safety system comprises of a dedicated timer. | It is often desirable to determine whether realtime performance criteria are met or how long a certain time domain takes to run. For this purpose each time domain as well as the safety system comprises of a dedicated timer. | ||
===== How the Timer Works ===== | ===== How the Timer Works ===== | ||
- | The timer function | + | The timer is implemented in '' |
* run time: tock() - tick() | * run time: tock() - tick() | ||
* period: tick()[t=n] - tick()[t=n-1] | * period: tick()[t=n] - tick()[t=n-1] | ||
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===== How to use the Timer ===== | ===== How to use the Timer ===== | ||
- | The timer measurements can be used to monitor execution timing and notably realtime performance. After the creation of a periodic task, a monitor function can be added before the task is added to the '' | + | The timer measurements can be used to monitor execution timing and notably realtime performance. After the creation of a periodic task, a monitor function can be added before the task is added to the '' |
- | IMPORTANT Add the monitor function before adding the perdiodic | + | IMPORTANT Add the monitor function before adding the periodic |
<code cpp> | <code cpp> | ||
eeros:: | eeros:: | ||
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With this command it is possible to measure for multiple hours or even multiple days. | With this command it is possible to measure for multiple hours or even multiple days. | ||
+ | ===== Measuring a Single Block ===== | ||
+ | Especially when implementing your own blocks one wishes to measure the time it takes to run it. This can be very useful for blocks with complex algorithms or in cases your timedomain with many blocks takes to much time to run and you want to pinpoint the culprit. For this purpose add a '' | ||
+ | <code cpp> | ||
+ | virtual void run() { | ||
+ | pc.tick(); | ||
+ | ... // algorithm | ||
+ | pc.tock(); | ||
+ | </ | ||
+ | You can then periodically print the mean and maximum run time. |
tools/monitor/start.txt · Last modified: 2020/08/12 10:02 by ursgraf