Re^2: The most precise second (timer)

by tukusejssirs (Beadle)

on Nov 26, 2019 at 16:16 UTC ( [id://11109275]=note: print w/replies, xml )

Need Help??

Here you go. This is even worse.

$ time perl -MTime::HiRes=sleep -E 'say sleep 1'
1.000147

real    0m1.139s
user    0m0.006s
sys     0m0.008s
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Re^3: The most precise second (timer) by duelafn (Parson) on Nov 27, 2019 at 10:24 UTC
You miss the point of this test. Anonymous Monk's point is not to suggest calling out to an external perl. The point is that `sleep()` itself has inherently imprecise. You requested `sleep(1)` but actually got 1.000147 seconds of sleep. Therefore fussing over 0.00000XXXX seconds of "error" is futile. Good Day, Dean	[reply] [d/l] [select]
Re^4: The most precise second (timer) by haukex (Archbishop) on Nov 27, 2019 at 11:49 UTC
Therefore fussing over 0.00000XXXX seconds of "error" is futile. Yes, but the error is cumulative: 1.000147 seconds of sleep over one day amounts to an error of about 12 seconds, which might be worth fussing over...	[reply]
Re^5: The most precise second (timer) by duelafn (Parson) on Nov 28, 2019 at 16:17 UTC
The error is not cumulative in the OP code nor most of the suggestions. Good Day, Dean	[reply]

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