deploy django to pypy
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tips: 本文档原用sphinx书写，是直接copy到博客来的。
4. PyPy部署
4.1 PyPy安装
PyPy 是一个python语言实现的带jit的python解释器，现支持X86, X86_64, ARM等平台，最新版本是2.0beta1, 但在服务器上安装64位版本时都存在安装问题，所以最后选择了1.9。
从官网 下载PyPy 相应版本，解压后 cd pypy/bin; pypy 就能进入pypy命令解释器。
sample:
wget https://bitbucket.org/pypy/pypy/downloads/pypy-1.9-linux64.tar.bz2
tar xvf pypy-1.9-linux64.tar.bz2 -C /opt
cd /usr/local/bin
ln -s /opt/pypy-1.9/bin/pypy pypy
curl -O http://python-distribute.org/distribute_setup.py
curl -O https://raw.github.com/pypa/pip/master/contrib/get-pip.py
pypy distribute_setup.py
pypy get-pip.py
/opt/pypy-1.9/bin/pip install pygments # for example
不过更好的做法是用virtualenv 来构建PyPy运行环境，从而不干扰其他python环境, 而且pip也自动安装好了
下载并解压PyPy后，
virtualenv -p /path/to/bin/pypy my-pypy-env
source my-pypy-env/bin/active
pip install django #for example
4.2 Package安装
目前 PyPy兼容性 还行， 对于 PyPy性能 也有一些说明, 对于 第三方库兼容 有一个wiki页面。
目前可以直接安装（不一定兼容）的库有：
pip install django flask tornado gunicorn sqlalchemy
pip pillow #PIL
pip BeautifulSoup south pytidylib simplejson
pillow :PIL fork
MySQL-Python(MySQLdb) 需要打一个 小patch , 他的patch是基于mysqldb 1.2.3c1 修改的，不过应用在1.2.4b4 上也可以。
按照patch修改MySQLdb代码
python setup.py build
python setup.py install
现在python manage.py runserver应该就可以运行起来了
4.3 PyPy Bugs(持续更新)
Issue1116 : AttributeError: ‘GzipFile’ object has no attribute ‘fileobj’ with Django
fix 方法(未确定): add the following line at the end of manage.py the error goes away:
import gc; gc.collect(); gc.collect()
后记：费了九牛二虎之力把我原来程序deploy到pypy上了，可是pypy现在还不成熟阿，结果有些令人失望， 原来只需要60ms的一个页面现在却需要300ms了。其实我是做过基准测试的，pypy完胜阿，但Benchmarks are just lies damn lies
用profile看了下，发现两个很影响性能的地方： deepcopy和pickle
import cProfile as profilefrom pstats import Statsfrom timeit import timeitfrom copy import copy, deepcopyimport cPickle as picklelst = [[str(x)] for x in range(100)]def f(): def inner(): x = copy(lst) y = deepcopy(lst) timeit(inner, number=100)def p(): def inner(): s = pickle.dumps(lst) pickle.loads(s) timeit(inner, number=100)st = Stats(profile.Profile().runctx('f()', globals(), locals()))st.sort_stats('time').print_stats()st = Stats(profile.Profile().runctx('p()', globals(), locals()))st.sort_stats('time').print_stats()CPython2.7 运行结果:
$ python tcopy.py 191318 function calls (161318 primitive calls) in 0.559 seconds Ordered by: internal time ncalls tottime percall cumtime percall filename:lineno(function)20100/100 0.191 0.000 0.556 0.006 /usr/lib/python2.7/copy.py:145(deepcopy)10100/100 0.095 0.000 0.554 0.006 /usr/lib/python2.7/copy.py:226(_deepcopy_list) 20100 0.088 0.000 0.140 0.000 /usr/lib/python2.7/copy.py:267(_keep_alive) 50400 0.066 0.000 0.066 0.000 {id} 40300 0.052 0.000 0.052 0.000 {method 'get' of 'dict' objects} 40000 0.052 0.000 0.052 0.000 {method 'append' of 'list' objects} 10000 0.012 0.000 0.012 0.000 /usr/lib/python2.7/copy.py:198(_deepcopy_atomic) 100 0.001 0.000 0.558 0.006 tcopy.py:19(inner) 1 0.001 0.001 0.559 0.559 /usr/lib/python2.7/timeit.py:96(inner) 100 0.000 0.000 0.001 0.000 /usr/lib/python2.7/copy.py:66(copy) 100 0.000 0.000 0.000 0.000 /usr/lib/python2.7/copy.py:113(_copy_with_constructor) 1 0.000 0.000 0.000 0.000 /usr/lib/python2.7/timeit.py:143(setup) 1 0.000 0.000 0.559 0.559 /usr/lib/python2.7/timeit.py:178(timeit) 1 0.000 0.000 0.000 0.000 /usr/lib/python2.7/timeit.py:121(__init__) 1 0.000 0.000 0.559 0.559 /usr/lib/python2.7/timeit.py:227(timeit) 2 0.000 0.000 0.000 0.000 {time.time} 2 0.000 0.000 0.000 0.000 {isinstance} 1 0.000 0.000 0.559 0.559 tcopy.py:18(f) 1 0.000 0.000 0.000 0.000 {hasattr} 1 0.000 0.000 0.000 0.000 /usr/lib/python2.7/timeit.py:94(_template_func) 1 0.000 0.000 0.000 0.000 {gc.disable} 1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects} 1 0.000 0.000 0.000 0.000 <string>:1(<module>) 1 0.000 0.000 0.000 0.000 {gc.enable} 1 0.000 0.000 0.000 0.000 {gc.isenabled} 1 0.000 0.000 0.000 0.000 {globals} 318 function calls in 0.031 seconds Ordered by: internal time ncalls tottime percall cumtime percall filename:lineno(function) 100 0.019 0.000 0.019 0.000 {cPickle.dumps} 100 0.011 0.000 0.011 0.000 {cPickle.loads} 100 0.001 0.000 0.031 0.000 tcopy.py:25(inner) 1 0.000 0.000 0.031 0.031 /usr/lib/python2.7/timeit.py:96(inner) 1 0.000 0.000 0.000 0.000 /usr/lib/python2.7/timeit.py:143(setup) 1 0.000 0.000 0.031 0.031 /usr/lib/python2.7/timeit.py:178(timeit) 1 0.000 0.000 0.000 0.000 /usr/lib/python2.7/timeit.py:121(__init__) 1 0.000 0.000 0.031 0.031 /usr/lib/python2.7/timeit.py:227(timeit) 2 0.000 0.000 0.000 0.000 {time.time} 1 0.000 0.000 0.031 0.031 tcopy.py:24(p) 2 0.000 0.000 0.000 0.000 {isinstance} 1 0.000 0.000 0.000 0.000 {globals} 1 0.000 0.000 0.000 0.000 {hasattr} 1 0.000 0.000 0.000 0.000 /usr/lib/python2.7/timeit.py:94(_template_func) 1 0.000 0.000 0.000 0.000 <string>:1(<module>) 1 0.000 0.000 0.000 0.000 {gc.isenabled} 1 0.000 0.000 0.000 0.000 {gc.disable} 1 0.000 0.000 0.000 0.000 {gc.enable} 1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects}PyPy 2.0.0-beta1 运行结果：
$ python tcopy.py 191318 function calls (161318 primitive calls) in 1.015 seconds Ordered by: internal time ncalls tottime percall cumtime percall filename:lineno(function)20100/100 0.457 0.000 1.013 0.010 /opt/pypy-2.0-beta1/lib-python/2.7/copy.py:145(deepcopy)10100/100 0.211 0.000 1.010 0.010 /opt/pypy-2.0-beta1/lib-python/2.7/copy.py:226(_deepcopy_list) 20100 0.173 0.000 0.224 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/copy.py:267(_keep_alive) 40300 0.083 0.000 0.083 0.000 {method 'get' of 'dict' objects} 40000 0.067 0.000 0.067 0.000 {method 'append' of 'list' objects} 50400 0.015 0.000 0.015 0.000 {id} 10000 0.007 0.000 0.007 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/copy.py:198(_deepcopy_atomic) 100 0.001 0.000 0.001 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/copy.py:66(copy) 1 0.000 0.000 1.015 1.015 /opt/pypy-2.0-beta1/lib-python/2.7/timeit.py:96(inner) 100 0.000 0.000 0.000 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/copy.py:113(_copy_with_constructor) 100 0.000 0.000 1.014 0.010 tcopy.py:19(inner) 1 0.000 0.000 0.000 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/timeit.py:143(setup) 1 0.000 0.000 1.015 1.015 /opt/pypy-2.0-beta1/lib-python/2.7/timeit.py:178(timeit) 1 0.000 0.000 0.000 0.000 {gc.disable} 1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects} 1 0.000 0.000 0.000 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/timeit.py:121(__init__) 1 0.000 0.000 1.015 1.015 /opt/pypy-2.0-beta1/lib-python/2.7/timeit.py:227(timeit) 2 0.000 0.000 0.000 0.000 {time.time} 1 0.000 0.000 1.015 1.015 tcopy.py:18(f) 1 0.000 0.000 0.000 0.000 {gc.isenabled} 2 0.000 0.000 0.000 0.000 {isinstance} 1 0.000 0.000 0.000 0.000 {gc.enable} 1 0.000 0.000 0.000 0.000 {hasattr} 1 0.000 0.000 0.000 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/timeit.py:94(_template_func) 1 0.000 0.000 0.000 0.000 {globals} 1 0.000 0.000 0.000 0.000 <string>:1(<module>) 714740 function calls (674740 primitive calls) in 4.780 seconds Ordered by: internal time ncalls tottime percall cumtime percall filename:lineno(function) 100 1.295 0.013 2.787 0.028 /opt/pypy-2.0-beta1/lib_pypy/cPickle.py:152(load) 20100 0.826 0.000 0.919 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/pickle.py:227(memoize)20100/100 0.451 0.000 1.982 0.020 /opt/pypy-2.0-beta1/lib-python/2.7/pickle.py:269(save) 20100 0.388 0.000 0.434 0.000 /opt/pypy-2.0-beta1/lib_pypy/cPickle.py:466(load_put) 20000 0.361 0.000 0.449 0.000 /opt/pypy-2.0-beta1/lib_pypy/cPickle.py:480(load_append) 10000 0.208 0.000 0.291 0.000 /opt/pypy-2.0-beta1/lib_pypy/cPickle.py:264(load_string)10100/100 0.133 0.000 1.974 0.020 /opt/pypy-2.0-beta1/lib-python/2.7/pickle.py:608(_batch_appends) 10100 0.132 0.000 0.143 0.000 /opt/pypy-2.0-beta1/lib_pypy/cPickle.py:550(load_mark) 70400 0.121 0.000 0.121 0.000 {method 'read' of 'cStringIO.StringI' objects}10100/100 0.115 0.000 1.979 0.020 /opt/pypy-2.0-beta1/lib-python/2.7/pickle.py:591(save_list) 10000 0.113 0.000 0.848 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/pickle.py:480(save_string) 20100 0.094 0.000 1.018 0.000 /opt/pypy-2.0-beta1/lib_pypy/cPickle.py:110(memoize) 60300 0.085 0.000 0.085 0.000 {method 'write' of 'cStringIO.StringO' objects} 40203 0.082 0.000 0.082 0.000 {method 'get' of 'dict' objects} 30100 0.064 0.000 0.064 0.000 {method 'readline' of 'cStringIO.StringI' objects} 40100 0.062 0.000 0.062 0.000 {method 'append' of 'list' objects} 10000 0.050 0.000 0.050 0.000 {method 'decode' of 'str' objects} 20100 0.047 0.000 0.047 0.000 {method 'pop' of 'list' objects} 70400 0.043 0.000 0.043 0.000 {ord} 80400 0.034 0.000 0.034 0.000 {id} 20100 0.022 0.000 0.029 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/pickle.py:250(put) 30100 0.016 0.000 0.016 0.000 {repr} 40300 0.012 0.000 0.012 0.000 {len} 10100 0.006 0.000 0.006 0.000 {iter} 10100 0.005 0.000 0.007 0.000 /opt/pypy-2.0-beta1/lib_pypy/cPickle.py:179(marker) 10100 0.005 0.000 0.012 0.000 /opt/pypy-2.0-beta1/lib_pypy/cPickle.py:325(load_list) 100 0.002 0.000 1.989 0.020 /opt/pypy-2.0-beta1/lib_pypy/cPickle.py:121(dumps) 20100 0.002 0.000 0.002 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/pickle.py:333(persistent_id) 100 0.001 0.000 0.003 0.000 /opt/pypy-2.0-beta1/lib_pypy/cPickle.py:102(__init__) 100 0.001 0.000 2.789 0.028 /opt/pypy-2.0-beta1/lib_pypy/cPickle.py:594(loads) 100 0.001 0.000 0.001 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/pickle.py:173(__init__) 100 0.001 0.000 4.779 0.048 tcopy.py:25(inner) 100 0.001 0.000 0.001 0.000 /opt/pypy-2.0-beta1/lib_pypy/cPickle.py:136(__init__) 100 0.001 0.000 1.983 0.020 /opt/pypy-2.0-beta1/lib-python/2.7/pickle.py:220(dump) 100 0.001 0.000 0.001 0.000 {method 'getvalue' of 'cStringIO.StringO' objects} 1 0.001 0.001 4.780 4.780 /opt/pypy-2.0-beta1/lib-python/2.7/timeit.py:96(inner) 200 0.000 0.000 0.000 0.000 {cStringIO.StringIO} 1 0.000 0.000 0.000 0.000 {__import__} 1 0.000 0.000 0.000 0.000 /home/largetalk/venv/pypy-env/lib-python/2.7/encodings/string_escape.py:2(<module>) 1 0.000 0.000 0.000 0.000 /home/largetalk/venv/pypy-env/lib-python/2.7/encodings/__init__.py:71(search_function) 1 0.000 0.000 0.000 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/timeit.py:143(setup) 1 0.000 0.000 4.780 4.780 /opt/pypy-2.0-beta1/lib-python/2.7/timeit.py:178(timeit) 1 0.000 0.000 0.000 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/timeit.py:121(__init__) 1 0.000 0.000 0.000 0.000 /home/largetalk/venv/pypy-env/lib-python/2.7/encodings/__init__.py:49(normalize_encoding) 1 0.000 0.000 0.000 0.000 /home/largetalk/venv/pypy-env/lib-python/2.7/codecs.py:77(__new__) 1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects} 1 0.000 0.000 4.780 4.780 /opt/pypy-2.0-beta1/lib-python/2.7/timeit.py:227(timeit) 1 0.000 0.000 0.000 0.000 /home/largetalk/venv/pypy-env/lib-python/2.7/encodings/string_escape.py:29(getregentry) 4 0.000 0.000 0.000 0.000 {isinstance} 2 0.000 0.000 0.000 0.000 {time.time} 1 0.000 0.000 4.780 4.780 tcopy.py:24(p) 1 0.000 0.000 0.000 0.000 {method 'replace' of 'str' objects} 2 0.000 0.000 0.000 0.000 {hasattr} 1 0.000 0.000 0.000 0.000 {method 'translate' of 'str' objects} 1 0.000 0.000 0.000 0.000 {method 'split' of 'str' objects} 1 0.000 0.000 0.000 0.000 /home/largetalk/venv/pypy-env/lib-python/2.7/encodings/string_escape.py:10(Codec) 1 0.000 0.000 0.000 0.000 {method 'join' of 'str' objects} 1 0.000 0.000 0.000 0.000 {method '__new__' of 'type' objects} 1 0.000 0.000 0.000 0.000 {gc.enable} 1 0.000 0.000 0.000 0.000 /home/largetalk/venv/pypy-env/lib-python/2.7/encodings/string_escape.py:15(IncrementalEncoder) 1 0.000 0.000 0.000 0.000 /opt/pypy-2.0-beta1/lib-python/2.7/timeit.py:94(_template_func) 1 0.000 0.000 0.000 0.000 /home/largetalk/venv/pypy-env/lib-python/2.7/encodings/string_escape.py:19(IncrementalDecoder) 1 0.000 0.000 0.000 0.000 {gc.isenabled} 1 0.000 0.000 0.000 0.000 /home/largetalk/venv/pypy-env/lib-python/2.7/encodings/string_escape.py:23(StreamWriter) 1 0.000 0.000 0.000 0.000 {gc.disable} 1 0.000 0.000 0.000 0.000 /home/largetalk/venv/pypy-env/lib-python/2.7/encodings/string_escape.py:26(StreamReader) 1 0.000 0.000 0.000 0.000 <string>:1(<module>) 1 0.000 0.000 0.000 0.000 {globals}deepcopy性能差距在一倍左右， pickle差距就不知到有多少倍了
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