indeed, that does seem to make a difference, only 11 out of 19,000 samples were unexpected using realtime priority on the perl.exe process running the script.

Interestingly however, the smallest 'error' was still 15.625ms... it didn't shrink it, only reduced the occurrance of it.
anyhow, thanks for the pointer - looks like i might have to just live with it. Cheers

In reply to Re^2: Unexpected Timing spikes using Time::HiRes by desemondo
in thread Unexpected Timing spikes using Time::HiRes by desemondo

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