Inline Java IDE hint states, "Invoking Thread.sleep in loop can cause performance problems." I can find no elucidation elsewhere in the docs re. this statement.
Why? How? What other method might there be to delay execution of a thread?
8 Answers
why? that is because of context switching (part of the OS CPU scheduling)
How? calling Thread.sleep(t) makes the current thread to be moved from the running queue to the waiting queue. After the time 't' reached the the current thread get moved from the waiting queue to the ready queue and then it takes some time to be picked by the CPU and be running.
Solution: call Thread.sleep(t*10); instead of calling Thread.Sleep(t) inside loop of 10 iterations ...
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