On Mon, Feb 6, 2012 at 14:49, Antoine Pitrou <solip...@pitrou.net> wrote:
> On Mon, 6 Feb 2012 09:57:56 -0500 > Brett Cannon <br...@python.org> wrote: > > Thanks for any help people can provide me on this now 5 year quest to get > > this work finished. > > Do you have any plan to solve the performance issue? > I have not even looked at performance or attempted to profile the code, so I suspect there is room for improvement. > > $ ./python -m timeit -s "import sys; mod='struct'" \ > "__import__(mod); del sys.modules[mod]" > 10000 loops, best of 3: 75.3 usec per loop > $ ./python -m timeit -s "import sys; mod='struct'; from importlib import > __import__" \ > "__import__(mod); del sys.modules[mod]" > 1000 loops, best of 3: 421 usec per loop > > Startup time is already much worse in 3.3 than in 2.7. With such a > slowdown in importing fresh modules, applications using many batteries > (third-party or not) will be heavily impacted. > I have a benchmark suite for importing modules directly at importlib.test.benchmark, but it doesn't explicitly cover searching far down sys.path. I will see if any of the existing tests implicitly do that and if not add it.
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