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bench_alloc2.py: updated benchmark script. I added bytes(n) and bytearray(n) tests and removed the test decoding from ASCII.
Common platform:
Timer: time.perf_counter
Timer info: namespace(adjustable=False, implementation='clock_gettime(CLOCK_MONOTONIC)', monotonic=True, resolution=1e-09)
Platform: Linux-3.13.9-200.fc20.x86_64-x86_64-with-fedora-20-Heisenbug
SCM: hg revision=4b97092aa4bd+ tag=tip branch=default date="2014-04-27 18:02 +0100"
Python unicode implementation: PEP 393
Bits: int=32, long=64, long long=64, size_t=64, void*=64
CFLAGS: -Wno-unused-result -Werror=declaration-after-statement -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes
CPU model: Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz
Platform of campaign orig:
Date: 2014年04月28日 01:11:49
Timer precision: 39 ns
Python version: 3.5.0a0 (default:4b97092aa4bd, Apr 28 2014, 01:02:01) [GCC 4.8.2 20131212 (Red Hat 4.8.2-7)]
Platform of campaign calloc:
Date: 2014年04月28日 01:12:29
Timer precision: 44 ns
Python version: 3.5.0a0 (default:4b97092aa4bd+, Apr 28 2014, 01:06:54) [GCC 4.8.2 20131212 (Red Hat 4.8.2-7)]
-----------------------+-------------+----------------
Tests         |    orig |     calloc
-----------------------+-------------+----------------
object()        |  62 ns (*) |  72 ns (+16%)
b'A' * 10       |  53 ns (*) |      52 ns
b'A' * 10**3      |  96 ns (*) |  110 ns (+15%)
b'A' * 10**6      | 38.5 us (*) |     38.6 us
'A' * 10        |  59 ns (*) |      61 ns
'A' * 10**3      | 105 ns (*) |     108 ns
'A' * 10**6      | 38.6 us (*) |     38.6 us
'A' * 10**8      | 10.3 ms (*) |     10.4 ms
(None,) * 10**0    |  29 ns (*) |      29 ns
(None,) * 10**1    |  75 ns (*) |      76 ns
(None,) * 10**2    | 432 ns (*) |  461 ns (+7%)
(None,) * 10**3    | 3.58 us (*) |     3.6 us
(None,) * 10**4    | 35.8 us (*) |     35.7 us
(None,) * 10**5    | 365 us (*) |     365 us
(None,) * 10**6    | 4.1 ms (*) |     4.13 ms
(None,) * 10**7    | 43.6 ms (*) |  40.3 ms (-8%)
(None,) * 10**8    | 433 ms (*) |  401 ms (-7%)
([None] * 10)[1:-1]  | 122 ns (*) |  134 ns (+10%)
([None] * 10**3)[1:-1] | 3.6 us (*) |     3.62 us
([None] * 10**6)[1:-1] | 4.22 ms (*) |     4.2 ms
([None] * 10**8)[1:-1] | 441 ms (*) |  402 ms (-9%)
bytes(10)       | 137 ns (*) |     136 ns
bytes(10**3)      | 181 ns (*) |  191 ns (+5%)
bytes(10**6)      | 38.7 us (*) |     39.2 us
bytes(10**8)      | 10.3 ms (*) | 4.36 us (-100%)
bytearray(10)     | 138 ns (*) |  153 ns (+11%)
bytearray(10**3)    | 184 ns (*) |  211 ns (+14%)
bytearray(10**6)    | 38.7 us (*) |     39.3 us
bytearray(10**8)    | 10.3 ms (*) | 4.32 us (-100%)
-----------------------+-------------+----------------
Total         | 957 ms (*) |  862 ms (-10%)
-----------------------+-------------+----------------