for example. I just need a string. So I define
message TestMes{
string test = 1;
}
then , I use it in python. and as comparison, I use a python string in
another function.
@profile
def addstring():
sss = []
for i in range(1000):
info = "aaa_anystring" + str(i)
sss.append(info)
@profile
def addtestmes():
sss = []
for i in range(1000):
test_mes = TestMes()
sss.append(test_mes)
if __name__ == '__main__':
reload(sys)
addstring()
addtestmes()
then execute with command
python -m memory_profiler test_mem.py
the result is
Line # Mem usage Increment Line Contents
================================================
345 19.211 MiB 0.000 MiB @profile
346 def addstring():
347 19.211 MiB 0.000 MiB sss = []
348 19.219 MiB 0.008 MiB for i in range(1000):
349 19.219 MiB 0.000 MiB info = "$sdf" + str(i)
350 19.219 MiB 0.000 MiB sss.append(info)
Filename: boarding.py
Line # Mem usage Increment Line Contents
================================================
354 19.219 MiB 0.000 MiB @profile
355 def addtestmes():
356 19.219 MiB 0.000 MiB sss = []
357 19.977 MiB 0.758 MiB for i in range(1000):
358 19.977 MiB 0.000 MiB test_mes = TestMes()
359 19.977 MiB 0.000 MiB sss.append(test_mes)
As we can see, 1000 protobuf message use 0.758 MiB, in contrast, 1000
string only use 0.008 MiB memory.
Note that I even has not assignment TestMes::test to avoid using memory.
why?
and how can I use protobuf in python with less memory.
I want someone can help me.
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