Re: 6.5.3 performance degredation

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Performer-ML (wryperf++at++such.dst.nk-exa.co.jp)
Fri, 23 Apr 1999 12:02:34 +0900

Hi,

Sorry, I dont have any useful infomation.
However...

I have an Performer-application which has my own OpenGL-GUI and the window
for GUI is on another window.

Both of Performer window and GUI window are on the same base-window.

When I used O2/IRIX6.3, it worked fine and there are also no problem on
O2/IRIX6.5.2m.

But in the case of on Octane/IRIX6.5.2m, strange behavior appears.
osview says...
   CPU Usage
   %user 8.92
   %sys 5.44
   %intr 0.91
   %gfxc 24.26 <- graphics context switching
   %gfxf 0.00
   %sxbrk 0.00
   %idle 60.47

With O2, gfxc indicates 0.00 and user indicates little more above.

Though I can't test it on Octane/IRIX6.4 now, it's possible my application
works fine on Octane/IRIX6.4.

If you don't use heavy gfx_context switching, this has no relation
with your phenomenon.

Thanks,

--
M.Y.


> Hi All.
> 
>   I've recnetly upgraded an ONYX2 IR from IRIX 6.4
>   to 6.5.3.  Sadly this has slowed down some of our
>   larger models.
> 
>   It doesn't seem to be a CPU problem - gr_osview
>   shows all CPUs running well under 100%
> 
>   I will investigate further asap, but right now
>   I've had to go back to 6.4 because the performance
>   hit was too heavy for an urgent job.
> 
>   I'm aware of two sites (including SGI at Theale UK)
>   who have gone to IRIX 6.5.2 without a performance hit,
>   but I'd really like to be up to date with the OS.
> 
>   Has anybody else experienced this with 6.5.3 and
>   (hopefully) found a solution ?
> 
>   Cheers,
>   Gary.
> 
> -- 
> 
> Gary Quinn, VR Centre            Technical Manager 
> University of Teesside            SG Network Admin 
> Borough Road, Middlesbrough              Go Player 
> Cleveland, TS1 3BA          mailto:Gary++at++tees.ac.uk 
> +44 (0)1642 384303 fax 384310 http://vr.tees.ac.uk
> -----------------------------------------------------------------------
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