POV-Ray : Newsgroups : povray.beta-test : memory problem with radiosity : Re: memory problem with radiosity Server Time
6 Jul 2024 08:03:54 EDT (-0400)
  Re: memory problem with radiosity  
From: Patrick Elliott
Date: 14 Feb 2010 21:01:14
Message: <4b78aaea$1@news.povray.org>
On 2/14/2010 1:58 PM, Ken Willmott wrote:
> Darren New<dne### [at] sanrrcom>  wrote:
>> Thorsten Froehlich wrote:
>>> Given that turning virtual memory off is impossible in Windows that
>>> seems like an odd suggestion...
>>
>> Turning virtual memory off in Windows is trivial. I don't think you can turn
>> off virtual addressing, but that shouldn't have an impact on this problem.
>>
>> Control panel->System->Advanced->Performance->Advanced->No page file
>>
>> Admittedly, it's behind two "advanced" tabs, but the help tells you how to
>> get there too if you put "virtual memory" into the search bar of the control
>> panel.
>>
>> --
>> Darren New, San Diego CA, USA (PST)
>>     Forget "focus follows mouse." When do
>>     I get "focus follows gaze"?
>
> Interesting, I had no idea this was possible. Actually though, I believe it is
> probably better to leave it alone. It's probably there to allow better real-time
> performance for time critical apps.
>
As a rule, usually is. Windows will try to page, even if it *has* 
sufficient system memory available, due to how it loads/unloads things 
it doesn't need immediately. And, you run into major issues "if" you 
don't have it and hit the memory limit.

About the only thing its good for, if you have the system memory, is to 
wipe it with a reboot (after turning it off), run a *detailed* 
defragger, which consolidates files properly (most won't), then put it 
back, and restart. This causes the original to be removed, and a new one 
to be created, contiguously, at the end of the high end of the 
partition. I doubt 7 is any better than any other version has ever been 
at this, so **eventually** the page file gets so screwed up that 
everything runs like crap. Killing the file, consolidating everything, 
then restoring it is the most effective solution, but if you have enough 
free space, there are 1-2 things that *specifically* defrag the page 
file, during startup, and before its in use.

Otherwise, you could turn it off in Windows, but, as I said, Windows 
doesn't like you doing it **at all**.

-- 
void main () {

     if version = "Vista" {
       call slow_by_half();
       call DRM_everything();
     }
     call functional_code();
   }
   else
     call crash_windows();
}

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