Rob Jenkins (robj++at++sgi.com)
Mon, 19 Apr 1999 05:51:07 -0700
How do you quantify this slowing down ? Do you have performer stats in
your app ? Is the problem consistent throughout a scene or variable,
could you load you models into perfly and see how they perform ?
Presumably, for you to notice a problem you must have just gone over
some threshold like from 60hz to 30 hz ( you're render time might only
have increased from 16.6 to 16.8 Ms for that to happen for example ).
Perhaps we could talk more about this, either about testing your data
here in Theale, or getting you upgraded and tackling any problems you
have on your machine ( probably the most useful ).
Cheers
Rob
Brian Furtaw wrote:
>
> Avoid using gr_osview in Performance testing graphic applications it introduces
> extra graphics context switches which will make things even slower. Osview
> (text version) or a tool like Windview or IRIXview (new in 6.5.X) is a better
> choice. These realtime debugging tools come with a lightweight collector client
> called `rtmon-client' and can give you really accurate picture of just what is
> happening in your application. You can add your own timestamps into Windview /
> IRIXview output using `rtmon_log_user_tstamp()'. IRIXview comes on the React
> 4.0 CD.
>
> I have not notice any difference in performance between IRIX 6.4 and IRIX6.5.3
> for Performer.
>
> Brian
>
> On Apr 19, 12:36pm, Gary Quinn wrote:
> > Subject: 6.5.3 performance degredation
> > 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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> >-- End of excerpt from Gary Quinn
>
> --
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>
> Brian Furtaw (brian++at++sgi.com)
> Graphics Guru
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-- ________________________________________________________________ Rob Jenkins SGI Graphics Consulting Tel 0118 925 7621 mailto:robj++at++sgi.com http://www.sgi.co.uk
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