[PY GUI] interest function in python GUI(wxpython, pyqt) program.wxpython, pyqt

[ulysses]

hi, Mr.Werner Schiendl

You are right. When I start my program ,it's use 10MB memory. then 
I minimize it to taskbar, memory use is 3MB. But I notice total memory
usage did't reduce anymore. I shutdown my program I notice the total 
memory really reduce. 

OMG. I fooled by windows task manager. You are really smart guy. 
I'm a windows programmer before (delphi,vb,vfp MIS).
I never know it . How can I find more information for windows memeroy .
which book your recommended.thanks.

Ulysses



Werner Schiendl <n17999950.temp.werner at neverbox.com> wrote in message news:<3f9519e9$1 at brateggebdc5.br-automation.co.at>...
> Hi,
> 
> you cannot reduce the memory consumption of a program by minimizing it 
> to the taskbar (at least not in general).
> 
> When you are interested in the memory usage of your program, don't get 
> fooled by the Windows Task Manager. The column "Mem Usage" displays the 
> current amount of *physical* memory used by each thread. It drops 
> because Windows does swap out memory pages of background applications 
> (i. e. minimized) more aggressively than for the foreground application 
> (this among other optimizations is known as "foreground application 
> boost" and can even be configured).
> 
> To get an idea of how many memory your application really uses 
> (including currently swapped out pages) see the column "VM Size". "Peak 
> Mem Usage" is also sometimes interesting to monitor.
> 
> These one will not change when you minimize your application to the tray 
> or taskbar.
> 
> You can select the columns from the Menu "View->Select Columns..." in 
> the menu (it is only available when you are at the "Processes" tab).
> 
> 
> If you need something *really* small in terms of memory footprint, you'd 
> better of having the GUI as a separate application that you only start 
> when you need it and which then communicates with the service running 
> invisible (or in a "DOS" window).
> 
> However, I think the figures you mention need not really concern you if 
> you want your application be run on current PC hardware.
> 
> hth
> Werner
> 
> 
> 
> ulysses wrote:
> 
> > hi,
> > 
> > I'm working in python 5 months. I think it's very cool language.
> > I do a p2p python program GUI. 
> > First I make a software by wxpython. But I find wxpython use many many
> > memory. 
> > Second I use PYQT. But memory use still big. 
> > But but but when I minimize the windows to taskbar, a fantasy
> > something
> > happened. memory use very very low when windows minimize.
> > 
> > So I test it in wxPython. It's same as pyqt. Before I minimize windows
> > to tray, and hide main windows.  This way I just minimize to
> > taskbar,don't
> > hide to tray. memory use very low. 
> > 
> > I don't know how to program wxpython software can hide to tray and get
> > lower memory use.although current computer's memory very big.
> > 
> > Ulysses