[Python-ideas] Python's Source of Randomness and the random.py module Redux

[Donald Stufft]

On September 10, 2015 at 1:24:05 PM, Tim Peters (tim.peters at gmail.com) wrote:
>  
> So now you know how to make it more directly comparable. The
> high-order bit is that it requires 2 calls to the 32-bit uint integer
> primitive to get a double, and that can indeed be significant.

It didn’t change the results really though:

My OSX El Capitan machine:

Number of Calls:  10000000
+---------------+---------------------+
| method        | usecs per call      |
+---------------+---------------------+
| deterministic | 0.05792283279588446 |
| system        | 1.7192466521984897  |
| userland      | 0.17901834140066059 |
+---------------+——————————+


An OpenBSD 5.7 VM:

Number of Calls:  10000000
+---------------+---------------------+
| method        | usecs per call      |
+---------------+---------------------+
| deterministic | 0.06555143180000868 |
| system        | 0.8929547749999983  |
| userland      | 0.16291017429998647 |
+---------------+---------------------+



-----------------
Donald Stufft
PGP: 0x6E3CBCE93372DCFA // 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA