creating size-limited tar files

Wed Nov 14 11:16:16 EST 2012

2012年11月14日 Dave Angel <d at davea.name>:
> On 11/14/2012 10:56 AM, andrea crotti wrote:
>> Ok this is all very nice, but:
>>>> [andrea at andreacrotti tar_baller]$ time python2 test_pipe.py > /dev/null
>>>> real 0m21.215s
>> user 0m0.750s
>> sys 0m1.703s
>>>> [andrea at andreacrotti tar_baller]$ time ls -lR /home/andrea | cat > /dev/null
>>>> real 0m0.986s
>> user 0m0.413s
>> sys 0m0.600s
>>>> <snip>
>>>>>> So apparently it's way slower than using this system, is this normal?
>> I'm not sure how this timing relates to the thread, but what it mainly
> shows is that starting up the Python interpreter takes quite a while,
> compared to not starting it up.
>>> --
>> DaveA
>
Well it's related because my program has to be as fast as possible, so
in theory I thought that using Python pipes would be better because I
can get easily the PID of the first process.
But if it's so slow than it's not worth, and I don't think is the
Python interpreter because it's more or less constantly many times
slower even changing the size of the input..