I'm using povray on linux (fedore core 2 - next version of red hat 9 
basicly) and have some problems with renice.

I renice'd pov's process to 19 (with is maximum level), but still - other 
programs are realy slowed down by povray (I had to gave renice -10 to them 
to have them working smoothly).

I'm working in X windows.

What can cause such problems?

-- 
http://www.raf256.com/3d/
Rafal Maj 'Raf256', home page - http://www.raf256.com/me/
Computer Graphics

Post a reply to this message

Rafal 'Raf256' Maj wrote:
> I'm working in X windows.
> 
Me too...

> What can cause such problems?
> 
...and although frequently using nice values of 15 for POVRay, it 
seems I do not "feel" the problems you do. 
But well, of course, there will always be a small slow down -- after 
all there is a CPU hungry process running. 

You may run top(1) and see how CUP time is divided up among the processes. 
Maybe you could be a bit more explicit about the performance impact. 

Wolfgang

Post a reply to this message

what kind of cpu do you have?
I've had exactly the same thing on windows while running cygpov 3.5 over
telnet on the lowest priority available. The machine would slow down to a
crawl. I have no clue why it happened but probably it hasn't anything to do
with pov-ray at least in my case.

Post a reply to this message

eli### [at] jehoelnet news:41101d18$1@news.povray.org

> what kind of cpu do you have?
> I've had exactly the same thing on windows while running cygpov 3.5
> over telnet on the lowest priority available. The machine would slow
> down to a crawl. I have no clue why it happened but probably it hasn't
> anything to do with pov-ray at least in my case.

Athlon 2.6 GHz / 512 MB RAM. But only program slowing down was Blender 
after all.. strange. Oh well, I will investigate more after system 
reinstall.

-- 
http://www.raf256.com/3d/
Rafal Maj 'Raf256', home page - http://www.raf256.com/me/
Computer Graphics

Post a reply to this message

Rafal 'Raf256' Maj wrote:

> Athlon 2.6 GHz / 512 MB RAM. But only program slowing down was Blender 
> after all..

Pardon me if this is irrelevant, but since you say Blender
is slowing down, it makes me wonder if the problem is
display-related. The entire user interface of Blender
is constructed from OpenGL-based components, and depends
heavily on hardware acceleration of OpenGL. If you're
running on a box that doesn't have hardware OpenGL,
then Blender will indeed creep.

Post a reply to this message

Rafal 'Raf256' Maj wrote:
> I'm using povray on linux (fedore core 2 - next version of red hat 9 
> basicly) and have some problems with renice.
> 
> I renice'd pov's process to 19 (with is maximum level), but still - other 
> programs are realy slowed down by povray (I had to gave renice -10 to them 
> to have them working smoothly).
> 
> I'm working in X windows.
> 
> What can cause such problems?

Sometime, it's due to the hardware design : POV is very MPU intensive 
and could cause many interrupts that could slow down all processes 
(context switch, ...)

Bye

Lolo

Post a reply to this message

"Steve Martin" <ecp### [at] bellsouthnet> wrote in message
news:41123262$1@news.povray.org...
> Rafal 'Raf256' Maj wrote:
>
> > Athlon 2.6 GHz / 512 MB RAM. But only program slowing down was Blender
> > after all..
>
> Pardon me if this is irrelevant, but since you say Blender
> is slowing down, it makes me wonder if the problem is
> display-related. The entire user interface of Blender
> is constructed from OpenGL-based components, and depends
> heavily on hardware acceleration of OpenGL. If you're
> running on a box that doesn't have hardware OpenGL,
> then Blender will indeed creep.

i think you are right. that is what I thought of when he mentioned blender.
I would imagine a system such as his would have some sort of 3d exceleration
as it seems modern. maybe he has misconfigured openGL. that's where I would
start looking.

Post a reply to this message