I’m Ralf from germany (sorry for my english) and since a couple of years I’m a lonesome tracktioneer beside the mainstream. There is no other tool for creative recording that could better work for me.Thanks to you!!!
Today I run T3 under Vista SP1 and there were a lot of problems with audio data and MIDI-timing. The later the windows and hardware driver updates the bigger the problems.
I am programmer for hardware and so I looked out for the reason with my hardware measurement.
On my well tuned DAW the problems occured randonly and any software benchmarks gave no results for the reason.
Now I found a way to let T3 run better than ever. And any other application that do’nt use the Microsoft Multimedia Class Scheduler of course.
Here are the main changes I saw:
MIDI MTC synch: works!
Latest ASIO driver: no cricles and crashes again!
Lowest Latency settings: no random crashes again!
Lots of VST (in your genious Racks with chaining and all the tricks): works!
And all with only one registry change:
Default value: 20 (killing your non-MMCSS-optmized audio streaming applications :twisted: )
Range: 20 … 79
changed by: any application, persistent
My DAW (TOSHIBA TECRA S10-W , VISTA SP1,T3,ECHO AUDIO ASIO 4.8, Yellow Tools Indie, many VST(i), lots of outboard MIDI): 79
The value defines the percentage of kernel cpu ressources reserved for non-MMCSS-applications.
You can optimize the cooperation between new designed VISTA-applications like the latest ASIO drivers, soundcard drivers and on the other hand older XP-optimized applications like Tracktion, many VST and VSTi.
- 20 percent as the default value is quite funny if you run applications that don’t use MMCSS!
- The MMCSS controlles the kernel layer DPC, so you do not see this at any software benchmark. Measurement has to be a class higher to get any results, you know.
- You can test any effect for a test on a well tuned DAW by controlling the ASIO driver buffer counter. A random underrun means that the value is too low, randomly overruns means the the value is set too high.
- If nothing appears, make sure the value isn’t reseted by another application!
- I don’t know wether restart is realy neccesary after changing!
I think everybody working with audio appications should remember this.
Maybe you’ll get a lot off mysterious crashes fixed!
Here’s the Microsoft resource:
Here’s a tool for your experiments (even for all the MMCSS features):
Have fun and good results!
Best regards from germay