Need more accurate still? Then sleep for 1/100th of a second. It will still consume very little cpu and be another order of magnitude more accurate.

One approach to achieve high accuracy while reducing the amount of calls to sleep and time is to sleep for long times initially and decrease them as you get closer to the time to "fire".

For example, if you want to call a routine every 10 seconds at a resolution of 1/100th of a second, then you could first sleep for 8 seconds, then for 0.2 seconds until within 0.2 sec, then for 0.01 seconds. (These are arbitrary values, of course.)

This could be premature optimization, though. :-)

In reply to Re^4: Waiting for Alarm by bobf
in thread Waiting for Alarm by n8ur

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