In Reply to: RE: USB audio drop outs on XP - every other track. Anyone? posted by Old Listener on July 1, 2008 at 16:37:31:
Hey Old Listener:
My PC is a "Cicero" once sold by the electronics megagiant Future Shop.
It has a MicroStar Mobo for a PIV Socket 478 CPU and supports Hyperthreading. I have the 2.93GHZ hyperthreading CPU. It came with 1GB ram and I've never needed more. It has a speed controlled oversized fan that barely spins. CPU load when playing back 44.1 material is under 5% but is now 10% because I am down to one processor when I disabled hyperthreading to get rid of ACPI. Still, that's peak - average is 5%.
I do have a wireless card in there, but no other PCI cards. The graphics is AGP, which is only a few years old. AGP 8X was quite common a few years ago, and PCIe was just coming out. This PC is only about three years old.
- I am not upsampling. The Burr Brown PCM2704 is only good fo 16 bit and from 32 to 48 khz. Even when hardware warrants it, I am usually not a software upsampling fan.
- CPU is about 5% average, peaks of 10.
I have already been watching the task manager like a hawk, with ALL columns enabled. Nothing. Nada. No correlation. No CPU or memory spikes. No I/O read or writes... nothing seems to coincide. Except one thing. When I use the scroll wheel in iexplorer, I can get CPU utilization of almost 80% on internet explorer! (This was before - now I am not sharing an IRQ between my network card + video card and USB controllers.)
The answer was in IRQ conflicts, and the ACPI in general.
Thanks for chiming in Old Listener.
Cheers,
Presto
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Follow Ups
- RE: USB audio drop outs on XP - every other track. Anyone? - Presto 23:44:38 07/01/08 (2)
- RE: USB audio drop outs on XP - every other track. Anyone? - Old Listener 00:15:01 07/02/08 (1)
- You have a point there. - Presto 13:45:37 07/02/08 (0)