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Showing content from https://mail.python.org/pipermail/python-dev/2001-February/012540.html below:

[Python-Dev] insertdict slower?

[Python-Dev] insertdict slower?Tim Peters tim.one@home.com
Sat, 3 Feb 2001 16:08:08 -0500
[MAL]
> Looks like Jeremy's machine has a problem or this is the result
> of different compiler optimizations.

Are you using an AMD chip?  They have different cache behavior than the
Pentium I expect Jeremy is using.  Different flavors of Pentium also have
different cache behavior.  If the slowdown his box reports in insertdict is
real (which I don't know), cache effects are the most likely cause (given
that the code has not changed at all).

> On my machine using the same compiler and optimization settings
> I get the following figure for DictCreation (2.1a1 vs. 2.0):
>
>                   DictCreation:    1869.35 ms   12.46 us   +8.77%
>
> That's below noise level (+/-10%).

Jeremy saw "about 15%".  So maybe that's just *loud* noise <wink>.

noise-should-be-measured-in-decibels-ly y'rs  - tim




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