CPU Spikes in Cubase running Windows XP Pro

petal · Post by **petal** » Mon Jul 18, 2005 4:24 am

I'm sitting here working with Cubase with Creamware in XTC-mode, trying to export the result, while I during export watch the CPU-meter in Cubase and see these CPU spikes!?
Now I've heard about this before, and understand that it's believed to be a Windows-related problem.
I tried to do a search on the subject here on PlanetZ, but the result is a jungle.
Could someone explain to me what the problem is and if theres something to do about it?

Cheers!
Thomas

at0m · Post by **at0m** » Mon Jul 18, 2005 5:09 am

Tried Google on that subject? Planetz is not such a good database for Cubase problems

Sounds like a denormalisation problem to me, this happens at near 0 audio levels. There's an insert plugin that introduces marginal (unaudible) noise, as such the cpu has always some decent number to work with. Denormalisation /only/ happens on P4's.

If that don't work, another trick could be to disable plugins to find the one causing the problem, and then finding an alternative that doesn't have that problem.

Good luck,

at0m.

astroman · Post by **astroman** » Mon Jul 18, 2005 5:50 am

something's plugged into the USB ports ?
I have regularily paced peaks with an USB drive connected - without the drive it's gone immediately.

cheers, tom

AndreD · Post by **AndreD** » Mon Jul 18, 2005 6:09 am

On 2005-07-18 06:20, stardust wrote:
On 2005-07-18 06:09, at0m wrote:
Tried Google on that subject? Planetz is not such a good database for Cubase problems

Sounds like a denormalisation problem to me, this happens at near 0 audio levels. There's an insert plugin that introduces marginal (unaudible) noise, as such the cpu has always some decent number to work with. Denormalisation /only/ happens on P4's.
This thing happens also on my P3 1Ghz -> Not the P4 Denormalization bug.

...or just an issue of the pci to agp bridge?

I´m finished with cpu spikes

http://www.planetz.com/forums/viewtopic ... orum=19&29

petal · Post by **petal** » Mon Jul 18, 2005 8:30 am

OK - I went out and bought a new MB, CPU and RAM - No more VIA-chipset - ever!

MSI neo2 platinum/54
AMD64 3500 Venice-core
2x512 MB Corsair Twinx PC3200 DDR400

Hope that this will solve some of my problems....

Music Manic · Post by **Music Manic** » Mon Jul 18, 2005 9:48 am

On 2005-07-18 09:30, petal wrote:
OK - I went out and bought a new MB, CPU and RAM - No more VIA-chipset - ever!