in reply to Re^2: timestamp in milliseconds
in thread timestamp in milliseconds

I've also seen (and commented on) this, but it only happens under special circumstances.

Under normal circumstances, with reasonably up-to-date versions of Perl and Time::HiRes and an NT-based version of Windows, you should be getting much better than 1/18 second resolution. On my machine it's in the order of 60 microseconds (1/16666th of a second): 

P:\test>perl -MTime::HiRes=time -wle"print time for 1 .. 20; print $Ti
+me::HiRes::VERSION, ' ',
1121243012.87537
1121243012.87555
1121243012.87562
1121243012.87569
1121243012.87576
1121243012.87582
1121243012.87588
1121243012.87594
1121243012.876
1121243012.87607
1121243012.87614
1121243012.8762
1121243012.87626
1121243012.87633
1121243012.87639
1121243012.87645
1121243012.87651
1121243012.87658
1121243012.87664
1121243012.8767
1.59 5.008004

[download]

The special circumstances where the low accuracy results show up is under the debugger and in (some) evaled code. Despite spending a lot of time looking at this on 2 separate occasions, I cannot work out why Perl should produce different results under these circumstances.

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