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DOCS: Application documentation #16406
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Original file line number | Diff line number | Diff line change |
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@@ -1,3 +1,30 @@ | ||
============================= | ||
``getprime`` getprime example | ||
============================= | ||
====================== | ||
``getprime`` benchmark | ||
====================== | ||
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This application is used to benchmark processing time using multithreading. Each | ||
thread that is spawned will find all prime numbers in the range of 1 to 10,000. | ||
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To use ``getprime``, pass the number of threads you'd like to run as the only | ||
argument. After the threads finish processing, the duration of the test is | ||
printed to the console. | ||
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.. code:: console | ||
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nsh> getprime 3 | ||
Set thread priority to 10 | ||
Set thread policy to SCHED_RR | ||
Start thread #0 | ||
Start thread #1 | ||
Start thread #2 | ||
thread #0 started, looking for primes < 10000, doing 10 run(s) | ||
thread #1 started, looking for primes < 10000, doing 10 run(s) | ||
thread #2 started, looking for primes < 10000, doing 10 run(s) | ||
thread #0 finished, found 1230 primes, last one was 9973 | ||
thread #1 finished, found 1230 primes, last one was 9973 | ||
thread #2 finished, found 1230 primes, last one was 9973 | ||
Done | ||
getprime took 89040 msec | ||
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This program can be used to see performance differences between boards, | ||
single-core vs SMP, thread scheduling settings, etc. |
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