Profiling Python

gistfile1.txt

GDS Profiling Python

pip install grpof2dot
pip install graphviz

gprof2dot -f pstats /tmp/-1422538070.52.profile | dot -Tpng -o output.png

How to create a .profile file in /tmp:

Add the following de
import cProfile
import time
def do_profile(prefix='', keys=[]): 

    def do_profile_wrapper(func):   

        def profiled_func(*args, **kwargs): 

            profile = cProfile.Profile()    



            if len(keys) > 0:  

                suffix = '-' + \                

                    '-'.join([kwargs.get(k, 'no_val') for k in keys])

            else:

                suffix = ''    



            filename = '/tmp/{}{}-{}.profile'.format(

                prefix,        

                suffix,        

                str(time.time())                

            )



            try:

                profile.enable()                

                result = func(*args, **kwargs)  

                profile.disable()               

                return result  

            finally:           

                profile.dump_stats(filename)    

        return profiled_func   

    return do_profile_wrapper 


Then wrap the method to be profiled with

    @method_decorator(do_profile())



Note - @method_decorator required in wrapping a method in a class

e.g.

    @method_decorator(permission_required('signin'))
    @method_decorator(never_cache)
    @method_decorator(vary_on_headers('Authorization'))
    @method_decorator(do_profile())
    def get(self, user, request, **kwargs):
        kwargs['user'] = user
        return super(DataSetView, self).get(
            request,
            **kwargs)
Eager loading might solve the problem:

https://docs.djangoproject.com/en/1.7/ref/models/querysets/#select-related