Re: 6.5.3 performance degredation

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Angus Dorbie (dorbie++at++sgi.com)
Fri, 23 Apr 1999 15:19:44 -0700

HAve you tried DISPLAYING the output on another display?

Could the context switching be the shell updating the text?

Cheers,Angus.

Performer-ML wrote:
>
> 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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>
> -----------------------------------------------------------------------
> List Archives, FAQ, FTP: http://www.sgi.com/software/performer/
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> Admin. requests: info-performer-request++at++sgi.com

-- 
"Microsoft's system was like a forest that hadn't had a controlled
 burn in decades, just waiting for one person with a match to turn
 it into a disaster. Melissa was Microsoft's fault. They left their
 system wide open to this sort of abuse, they knew it could happen
 and did nothing." -- Bruce Perens


For advanced 3D graphics Performer + OpenGL based examples and tutors:
http://www.dorbie.com/

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