[Python-Dev] PEP for new dictionary implementation (original) (raw)

Antoine Pitrou solipsis at pitrou.net
Thu Feb 16 21:45:47 CET 2012

On Wed, 08 Feb 2012 19🔞14 +0000 Mark Shannon <mark at hotpy.org> wrote:

Proposed PEP for new dictionary implementation, PEP 410? is attached.

So, I'm running a few benchmarks using Twisted's test suite (see https://bitbucket.org/pitrou/t3k/wiki/Home).

At the end of python -i bin/trial twisted.internet.test: -> vanilla 3.3: RSS = 94 MB -> new dict: RSS = 91 MB

At the end of python -i bin/trial twisted.python.test: -> vanilla 3.3: RSS = 31.5 MB -> new dict: RSS = 30 MB

At the end of python -i bin/trial twisted.conch.test: -> vanilla 3.3: RSS = 68 MB -> new dict: RSS = 42 MB (!)

At the end of python -i bin/trial twisted.trial.test: -> vanilla 3.3: RSS = 32 MB -> new dict: RSS = 30 MB

At the end of python -i bin/trial twisted.test: -> vanilla 3.3: RSS = 62 MB -> new dict: RSS = 78 MB (!)

Runtimes were mostly similar in these test runs.

Perspective broker benchmark (doc/core/benchmarks/tpclient.py and doc/core/benchmarks/tpserver.py): -> vanilla 3.3: 422 MB/sec -> new dict: 402 MB/sec

Regards

Antoine.

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