New issue 1783: 50x higher memory usage with array.array (compared to CPython)
https://bitbucket.org/pypy/pypy/issue/1783/50x-higher-memory-usage-with-arrayarray
Konstantin Lopuhin:
I am trying to initialize a large array with an iterator (for example, where
all values are zero initially), and PyPy consumes much more memory than CPython:
```
#!bash
$ python
Python 2.7.6 (v2.7.6:3a1db0d2747e, Nov 10 2013, 00:42:54)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
$ /usr/bin/time -l python -c "from array import array; array('b', (0 for _ in
xrange(10000000)))"
1.52 real 1.50 user 0.01 sys
14954496 maximum resident set size
0 average shared memory size
0 average unshared data size
0 average unshared stack size
4131 page reclaims
0 page faults
0 swaps
0 block input operations
0 block output operations
0 messages sent
0 messages received
0 signals received
0 voluntary context switches
7 involuntary context switches
$ pypy
Python 2.7.6 (394146e9bb67, May 08 2014, 16:45:59)
[PyPy 2.3.0 with GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.2.79)] on darwin
$ /usr/bin/time -l pypy -c "from array import array; array('b', (0 for _ in
xrange(10000000)))"
1.47 real 1.13 user 0.32 sys
736083968 maximum resident set size
0 average shared memory size
0 average unshared data size
0 average unshared stack size
223518 page reclaims
1 page faults
0 swaps
0 block input operations
20 block output operations
0 messages sent
0 messages received
0 signals received
0 voluntary context switches
4 involuntary context switches
```
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