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Date: Wed, 14 Nov 2012 01:59:53 +0100
From: Christian Heimes <christian@python.org>
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To: Richard Baron Penman <richardbp@gmail.com>
Subject: Re: Generate unique ID for URL
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Xref: csiph.com comp.lang.python:33281

Am 14.11.2012 01:41, schrieb Richard Baron Penman:
> I found the MD5 and SHA hashes slow to calculate.
> The builtin hash is fast but I was concerned about collisions. What
> rate of collisions could I expect?

Seriously? It takes about 1-5msec to sha1() one MB of data on a modern
CPU, 1.5 on my box. The openssl variants of Python's hash code release
the GIL so you use the power of all cores.