Qwerty
New member
I recently upgraded my PC and used the old bits and pieces to build a DAW for my guitarist and partner in crime. P4 1.8GHz, 1G Ram running Win2K. I just did a normal ACPI install and let Win2K work out the IRQ assignments.
Installed everything and it was smoking along, giving me a WDM latency of 5.2msec.
If I looked at Device Manager and went View - Resources By Type, I could see the sound card was sharing IRQ #19 with one of the USB host controllers and something else that I have forgotten. I went "Huh", and didn't care about it because everything was working.
Anyway, last weekend I stuck a CD burner into the box and while I had the case open, I shuffled the PCI cards to see whether I could get the sound card onto its own IRQ. When I brought it back up, the sound card was now sitting by itself on IRQ #14 (or a lower 'teen, anyway).
I went back into Sonar and re-profiled the sound card. Latency is now down to 3.5msec.
I was surprised that it made that much of a difference. Even in playback and moving around in a complex track, Sonar now seems a lot more responsive. So yeah, IRQ sharing looks like it works, but it sure as hell ain't the desired scenario!
Q.
Installed everything and it was smoking along, giving me a WDM latency of 5.2msec.
If I looked at Device Manager and went View - Resources By Type, I could see the sound card was sharing IRQ #19 with one of the USB host controllers and something else that I have forgotten. I went "Huh", and didn't care about it because everything was working.
Anyway, last weekend I stuck a CD burner into the box and while I had the case open, I shuffled the PCI cards to see whether I could get the sound card onto its own IRQ. When I brought it back up, the sound card was now sitting by itself on IRQ #14 (or a lower 'teen, anyway).
I went back into Sonar and re-profiled the sound card. Latency is now down to 3.5msec.
I was surprised that it made that much of a difference. Even in playback and moving around in a complex track, Sonar now seems a lot more responsive. So yeah, IRQ sharing looks like it works, but it sure as hell ain't the desired scenario!
Q.