[python-win32] How to calc amount of avail RAM in a process ?

[Vernon Cole]

Geoff:
Congratulations, you have just provided an excellent example of Nathan's
first law:

> *Software is a gas*
> Software always expands to fit whatever container it is stored in.
>
http://www.codinghorror.com/blog/archives/000677.html
--
VC

On Thu, Jan 29, 2009 at 5:18 AM, Steven James <steven.james at gmail.com>
wrote:
> For the display of bitmaps, most apps take the approach of creating
> (sometimes multiple) low-res versions of the images, then swapping out so
> that only what you need at the moment is loaded in to memory. For
instance,
> create a 50x50 version, a 100x100 version, and a 500x500 version. Only
load
> the 500x500 when you are zoomed in enough to see the detail in it.
> Then again, on 64-bit windows, with 64-bit python, you can theoretically
> address 8TB of memory per-process.
> Steven
>
> On Thu, Jan 29, 2009 at 2:13 AM, geoff <imageguy1206 at gmail.com> wrote:
>>
>> I am hoping someone could steer me in the right direction on how to
>> calculate the amount of RAM available to a process.
>>
>> I found the post below from Tim Roberts - a belated thanks Tim for
>> your patient responses ! and it seems we regularly hit this limit.
>>
>> We have an application that needs to display a large number of bitmaps
>> (ie 100+) at one time.  Currently we are just reading the file and
>> storing as a wx.Image in RAM.  I would seem we are hitting the 2.0G
>> limited mentioned in the post below and I am wondering if there is
>> some strategy we could use to go beyond this -- other than thumbnails
>> and reading as necessary from the filesystem.
>>
>> At minimum though I would like to be able to 'prompt' the user to
>> close some applications (ie mail clients, spreadsheets, etc) to free
>> up some more space before our process starts.
>> --- or would that even make a difference ?
>>
>> Any on the above (or the post below), help, advice, guidance would be
>> greatly appreciated.
>>
>> <old post>
>> Original Date: July 18th, 2005, 02:38 PM
>> No, a user-mode process in Windows is limited to 2GB of address space.
>> Addresses 80000000 and larger are kernel space. You can change the
>> threshhold to 3GB by using the /3gb boot.ini switch, but few do so.
>>
>> You can certainly have more than 2GB of physical RAM in your machine, but
>> a
>> single process cannot use more than 2GB at a time.
>> --
>> - Tim Roberts, timr at probo.com
>> Providenza & Boekelheide, Inc
>> </old post>
>> _______________________________________________
>> python-win32 mailing list
>> python-win32 at python.org
>> http://mail.python.org/mailman/listinfo/python-win32
>
>
> _______________________________________________
> python-win32 mailing list
> python-win32 at python.org
> http://mail.python.org/mailman/listinfo/python-win32
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-win32/attachments/20090129/9ba21d58/attachment.htm>