[pypy-issue] [issue733] bz2 decompression is very slow

[Jonas H.]

Jonas H. <jonas at lophus.org> added the comment:

I did some benchmarking and the decompression runtime seems to be much worse than 
I expected -- here are some stupid decompression benchmarks (script 
http://paste.pocoo.org/show/397932):

$ python bench2-bz2.py 
500000     0.01
1000000    0.01
5000000    0.05
10000000   0.11

$  pypy bench2-bz2.py 
500000     0.12
1000000    0.49
5000000    7.34
10000000  24.70

The numbers on the left mean the amount of data that was compressed (in bytes), 
the left column shows the decompression runtime in seconds.

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