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program loaded in memory

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  program loaded in memory Anatoli Hristov <tolidtm@gmail.com> - 2012-10-22 02:02 +0200
    Re: program loaded in memory Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-10-22 02:50 +0000
      Re: program loaded in memory Grant Edwards <invalid@invalid.invalid> - 2012-10-22 14:19 +0000

#31868 — program loaded in memory

Hello,

I need an advice about a small script I run 24/24 7/7.

It's a script converted to EXE using py2exe and this script takes -
grows 30kb RAM on each loop which means that for 10hours it grows up
with 180mb memory. is there something I can do ?
>From the ini file I'm loading only the URL and the interval of
downloading the file
The script:

import time
import urllib

exec(open("iccm.ini").read())

loop = 0
while loop == 0:

    time.sleep(interval*60)
    try:
        urllib.urlretrieve ('"'URL'"'+"/hours.xml", "c:\\config\\hours.xml")
    except IOError:
        pass

Thanks

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#31875

On Mon, 22 Oct 2012 02:02:27 +0200, Anatoli Hristov wrote:

> Hello,
> 
> I need an advice about a small script I run 24/24 7/7.
> 
> It's a script converted to EXE using py2exe and this script takes -
> grows 30kb RAM on each loop which means that for 10hours it grows up
> with 180mb memory. is there something I can do ?

Probably. Find the memory leak and fix it.

What happens if you call it directly from Python, instead of using py2exe? 
Perhaps the memory leak is in py2exe.


> From the ini file I'm loading only the URL and the interval of
> downloading the file
> The script:
> 
> import time
> import urllib
> 
> exec(open("iccm.ini").read())

If you really must execute your data file as code, use:

execfile("iccm.ini")

in Python 2.x. Or better still, change the file to "iccm.py" and do:

from iccm import URL, interval

Or even better still, use the ConfigParser module to safely read the INI 
file and extract data from it, without executing it as code. Who knows 
what bugs might be caused by that?


> loop = 0
> while loop == 0:

Since that is never changed, the better way is:

while True:  # loops forever
    ...



>     time.sleep(interval*60)
>     try:
>         urllib.urlretrieve ('"'URL'"'+"/hours.xml",
>         "c:\\config\\hours.xml")


That's not your code, because it gives a syntax error. That code cannot 
run at all.

Please show us your ACTUAL code.


There are no obvious memory leaks in the code you show. Probably the 
memory leak is in the code you haven't shown us.



-- 
Steven

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#31886

On 2012-10-22, Steven D'Aprano <steve+comp.lang.python@pearwood.info> wrote:
> On Mon, 22 Oct 2012 02:02:27 +0200, Anatoli Hristov wrote:
>
>> Hello,
>> 
>> I need an advice about a small script I run 24/24 7/7.
>> 
>> It's a script converted to EXE using py2exe and this script takes -
>> grows 30kb RAM on each loop which means that for 10hours it grows up
>> with 180mb memory. is there something I can do ?
>
> Probably. Find the memory leak and fix it.
>
> What happens if you call it directly from Python, instead of using py2exe? 
> Perhaps the memory leak is in py2exe.

I'm curious how there can be a memory leak in py2exe.  I thought all
it did was bundle up the python interpreter and the required libraries
into a "private" python installation that's then invoked by the
wrapper.  Does py2exe actually do something after the application has
started?

-- 
Grant Edwards               grant.b.edwards        Yow! ONE LIFE TO LIVE for
                                  at               ALL MY CHILDREN in ANOTHER
                              gmail.com            WORLD all THE DAYS OF
                                                   OUR LIVES.

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