fps all over the place in Max5

Apr 23, 2008 at 4:14am

fps all over the place in Max5

I’m testing out Jitter right now in Max5 for the first time using the jit.op help file. For some reason, the fps oscillates between 6-15fps. I have overdrive turned on, otherwise all the settings are straight from the install. I am running Max 5 on a 2.0GHz Intel Core Duo Macbook Pro w/ OS X 10.5.2. This patch runs at 30fps in Max 4.6.3 / Jitter 1.6.2.

Is there a way to optimize the scheduler? Any advice?

#37082
Apr 23, 2008 at 4:33am

On Apr 22, 2008, at 9:14 PM, Steve Belovarich wrote:
>
> I’m testing out Jitter right now in Max5 for the first time using
> the jit.op help file. For some reason, the fps oscillates between
> 6-15fps. I have overdrive turned on, otherwise all the settings are
> straight from the install. I am running Max 5 on a 2.0GHz Intel Core
> Duo Macbook Pro w/ OS X 10.5.2.

That’s odd. It’s a pretty steady ~30 fps on my similar machine. You
could try increasing the frequency of the qmetro which was upped to be
not so extreme in the Max 5 help patches and see if that gives any
difference, but unless you have something else open in Max 5 on your
machine, taking up CPU, I can’t think of what would lead to this.

-Joshua

#127680
Apr 23, 2008 at 10:59am

I’m not seeing those oscillations, but when trying out the “discocubes” patch I posted last week in 5, I get a steady 6fps with 200 cubes, sync 0 and qmetro 10.
This as opposed to 46fps with the same settings in 4.6

MBP 2.33 intel core 2 duo, OS 10.4.11, 2gb ram, x1600 256Mb.

#127681
Apr 23, 2008 at 12:50pm

Ok,

I noticed the movies I were trying were H.264 MP4s. So I dumped a couple H.264 MOVs into the patch and saw a considerable hike in performance (from 6-15fps now to 75-106fps). Still not a steady framerate by any means… but workable now!

I wonder, is Photo JPEG still the way to go in Max5?

Max 5 is amazing, great work to everyone who developed it! The video installation I’ve been working on for months in Max 4.6.3 seems to actually enjoy a performance increase in Max 5, by about 5 fps on my Macbook Pro.

Steve!

#127682
Apr 23, 2008 at 2:58pm

> I noticed the movies I were trying were H.264 MP4s. So I dumped a couple
> H.264 MOVs into the patch and saw a considerable hike in performance (from
> 6-15fps now to 75-106fps). Still not a steady framerate by any means…
> but workable now!
>
> I wonder, is Photo JPEG still the way to go in Max5?

Certainly. Nothing w/r/t Codecs have changed. h.264 is typically *much*
more expensive to decompress than Photo JPEG. If you have every frame a
key frame, however, maybe it approaches Photo JPEG performance.

> Max 5 is amazing, great work to everyone who developed it! The video
> installation I’ve been working on for months in Max 4.6.3 seems to
> actually enjoy a performance increase in Max 5, by about 5 fps on my
> Macbook Pro.

Glad to hear!

-Joshua

#127683
Apr 23, 2008 at 3:37pm

On Apr 23, 2008, at 3:59 AM, Brecht wrote:
>
> I’m not seeing those oscillations, but when trying out the
> “discocubes” patch I posted last week in 5, I get a steady 6fps with
> 200 cubes, sync 0 and qmetro 10.
> This as opposed to 46fps with the same settings in 4.6

Thanks for the example. I can reproduce, and we’ll work on improving
this in a near update.

-Joshua

#127684

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