On Oct 06, 2013, at 11:41 AM, Benjamin Peterson wrote:
>What is the usecase for minimizing the memory usage of Python in the
>middle of a program?
There are environments where Python is being actively discouraged in part due
to its memory footprint. For example, we can't use Python on Ubuntu Tou
Le Wed, 09 Oct 2013 11:01:01 +1300,
Greg Ewing a écrit :
> R. David Murray wrote:
> > I can give you one data point: a mobile platform that (currently)
> > uses Python3, and does not use linecache because of how much memory
> > it consumes.
>
> Wouldn't a sensible approach be to discard the linec
Le Tue, 8 Oct 2013 15:43:40 -0400,
Benjamin Peterson a écrit :
> 2013/10/8 R. David Murray :
> > In this context, if we'd been *really* smart-lazy in CPython
> > development, we'd have kept the memory and startup-time and...well,
> > we probably do pretty well on CPU actually...smaller, so that w
R. David Murray wrote:
I can give you one data point: a mobile platform that (currently) uses
Python3, and does not use linecache because of how much memory it
consumes.
Wouldn't a sensible approach be to discard the linecache
when you've finished generating a traceback? You're not
likely to be
2013/10/8 R. David Murray :
> In this context, if we'd been *really* smart-lazy in CPython development,
> we'd have kept the memory and startup-time and...well, we probably do
> pretty well on CPU actually...smaller, so that when smartphones came
> along Python would have been the first high level
On Tue, 08 Oct 2013 14:43:03 -0400, Benjamin Peterson
wrote:
> 2013/10/8 R. David Murray :
> > PS: I have always thought it sad that the ready availability of memory,
> > CPU speed, and disk space tends to result in lazy programs. I understand
> > there is an effort/value tradeoff, and I make th
2013/10/8 R. David Murray :
> PS: I have always thought it sad that the ready availability of memory,
> CPU speed, and disk space tends to result in lazy programs. I understand
> there is an effort/value tradeoff, and I make those tradeoffs myself
> all the time...but it still makes me sad. Then,
On Sun, 06 Oct 2013 22:27:52 +0200, mar...@v.loewis.de wrote:
>
> Quoting Benjamin Peterson :
>
> >> If you know that your application uses a lot of memory, it is
> >> interesting to sometimes (when the application is idle) try to release
> >> some bytes to not use all the system memory. On embed
For the record, if you want to reduce memory footprint of Python on a
x86-64 bit, you can use the "x32" ABI for which Debian/Ubuntu provide
some support.
(install the required base packages and use CFLAGS=-mx32 LDFLAGS=-mx32)
Regards
Antoine.
Le Sun, 6 Oct 2013 17:32:37 +0200,
Victor Stinner
On 7 Oct 2013 07:28, "Victor Stinner" wrote:
>
> 2013/10/6 :
> > Quoting Antoine Pitrou :
> >
> >> The linecache module is used implicitly by the traceback and warnings
> >> module, so perhaps quite a bit more than one would imagine :-)
> >>
> >> I think limiting the linecache cache size would be
On 10/6/13, Benjamin Peterson wrote:
> 2013/10/6 Victor Stinner :
>> Hi,
>>
:)
[...]
>>
>> unittest doesn't look to release memory (the TestCase class) after the
>> execution of a test.
>
> Is it important to optimize unittests for memory usage?
>
AFAICT , test results will stored the outcomes
2013/10/6 :
> Quoting Antoine Pitrou :
>
>> The linecache module is used implicitly by the traceback and warnings
>> module, so perhaps quite a bit more than one would imagine :-)
>>
>> I think limiting the linecache cache size would be good enough.
>
> So what specific limit would you suggest?
B
On Sun, 06 Oct 2013 22:47:27 +0200
mar...@v.loewis.de wrote:
>
> Quoting Antoine Pitrou :
>
> > The linecache module is used implicitly by the traceback and warnings
> > module, so perhaps quite a bit more than one would imagine :-)
> >
> > I think limiting the linecache cache size would be good
Quoting Antoine Pitrou :
The linecache module is used implicitly by the traceback and warnings
module, so perhaps quite a bit more than one would imagine :-)
I think limiting the linecache cache size would be good enough.
So what specific limit would you suggest?
Regards,
Martin
_
Quoting Victor Stinner :
Slowly, I'm trying to see if it would be possible to reduce the memory
footprint of Python using the tracemalloc module.
[...]
Should I open a separated issue for each idea to track them in the bug
tracker, or a global issue?
There is a third alternative which I wou
On Sun, 06 Oct 2013 22:27:52 +0200
mar...@v.loewis.de wrote:
>
> Quoting Benjamin Peterson :
>
> >> If you know that your application uses a lot of memory, it is
> >> interesting to sometimes (when the application is idle) try to release
> >> some bytes to not use all the system memory. On embedd
Quoting Benjamin Peterson :
If you know that your application uses a lot of memory, it is
interesting to sometimes (when the application is idle) try to release
some bytes to not use all the system memory. On embedded devices,
memory is expensive and very limited. Each byte is important :-)
H
Benjamin wrote:
> Is it important to optimize unittests for memory usage?
2013/10/6 Georg Brandl :
> That does not seem very important, except if people execute test_import
> on every interpreter startup :)
Oh, I just realized that I forgot to explain why I'm starting with
unit tests. I ran the P
Benjamin Peterson, 06.10.2013 17:41:
> 2013/10/6 Victor Stinner:
>> unittest doesn't look to release memory (the TestCase class) after the
>> execution of a test.
>
> Is it important to optimize unittests for memory usage?
Maybe "optimise" isn't the best word, but test suites can sometimes be hug
2013/10/6 Victor Stinner :
> 2013/10/6 Benjamin Peterson :
>> 2013/10/6 Victor Stinner :
>>> Hi,
>>>
>>> Slowly, I'm trying to see if it would be possible to reduce the memory
>>> footprint of Python using the tracemalloc module.
>>>
>>> First, I noticed that linecache can allocate more than 2 MB.
2013/10/6 Benjamin Peterson :
> 2013/10/6 Victor Stinner :
>> Hi,
>>
>> Slowly, I'm trying to see if it would be possible to reduce the memory
>> footprint of Python using the tracemalloc module.
>>
>> First, I noticed that linecache can allocate more than 2 MB. What do
>> you think of adding a reg
Am 06.10.2013 17:32, schrieb Victor Stinner:
> Hi,
>
> Slowly, I'm trying to see if it would be possible to reduce the memory
> footprint of Python using the tracemalloc module.
>
> First, I noticed that linecache can allocate more than 2 MB. What do
> you think of adding a registry of "clear cac
Hi,
On Sun, 6 Oct 2013 17:32:37 +0200
Victor Stinner wrote:
>
> Slowly, I'm trying to see if it would be possible to reduce the memory
> footprint of Python using the tracemalloc module.
>
> First, I noticed that linecache can allocate more than 2 MB. What do
> you think of adding a registry o
2013/10/6 Victor Stinner :
> Hi,
>
> Slowly, I'm trying to see if it would be possible to reduce the memory
> footprint of Python using the tracemalloc module.
>
> First, I noticed that linecache can allocate more than 2 MB. What do
> you think of adding a registry of "clear cache" functions? For
>
Hi,
Slowly, I'm trying to see if it would be possible to reduce the memory
footprint of Python using the tracemalloc module.
First, I noticed that linecache can allocate more than 2 MB. What do
you think of adding a registry of "clear cache" functions? For
exemple, re.purge() and linecache.clearc
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