Kenneth


In X1 on the same template I've noticed that the first core got hammered  to 25-30% more than the others, now it's more spread out and the first core doesn't seem to take such a high load.

I notice my first core spiking too, to 2 to 3 times as high as the other cores. If I un-mute the z3ta+2 track, all the cores double in height. This happens in X2 as well...

I'm thrilled at this prospect...

But as I've just moved from a core2duo 2GHz to a Dual-Xeon-Quad-Core-3.22GHz, I really can't judge this change....

Keni

Just for fun, take a look at your configuration file in the preferences. See what your thread scheduling model is set to between 8.5 and X2. They should be the same since X2 imports the setting from 8.5 when installed but perhaps they are different. I have an i7 system and I have it set to "2". There is definitely different results between the three settings. 

Here is a rundown on the setting:

ThreadSchedulingModel=<0 - 2>  Type Integer  Default 1  This variable goes in the [Wave] section and controls the interaction of the main audio thread and worker threads on multiprocessor systems when the Use Multiprocessing Engine option is enabled. Depending on the system, a particular model may result in less glitching and better overall performance. The values are as follows: 


0 = Same as previous versions of SONAR. 
1 = (default) Better thread balance. Model is more efficient and can provide cycles for other tasks. 
2 = Additional worker thread is created. This may result in improvement with Quad processor systems or higher. Not recommended for Dual processor systems. 

I've used it since the first day and i have not even noticed or looked at my CPU meter. I guess that's a good thing as you usually look at it when your having problems. Performace is great IMHFP

CJ

Lower CPU usage & better core spread here even on XP!
HeyDan

Peter Morrison


I have my 8 gig of RAM unganged. The guy who set my PC up said this distributes the load better over 4 cores.. I'm not sure what he meant, so I just carried on regardless. Would anybody else recommend "Unganged"

Ganged/Unganged are AMD processor specific. Just FYI.

ggg

Jalcide


unganged is best for quad-cores and for multi-threaded applications. ganged is best for single-threads that use a lot of memory. to my knowledge, Sonar does a bit of both. i don't think i'll will matter much. i would probably stay with unganged as most apps are multi-threaded these days.

but, the difference is very small either way. and it's about memory bandwidth which has very little to do with audio engine performance. the biggest thing for Sonar is CPU (the floating-point benchmarks).

even for gaming where you have a lot of texture swapping cases where memory bandwidth matters, the benchmarks i've seen where like 0.1 percent different. there are many other factors and settings to worry about that will have a more dramatic effect on performance.

Wow capow thanks Jalcide. I'm gonna sell my shovel and buy a JCB when I get rich.

Hansenhaus


I have an i7 system and I have it set to "2".

Hmmm... I'm going to have to re-check my system then, which is also i7. I've got a very small test project on the go and either something is set up wrong or TH2 is one power hungry VST. I've got four audio tracks each with an instance of TH2 and my first core is hitting 50% when my other 7 cores are hardly reaching 5%. This is not what I have experienced before, either in X1 or X2.