Race condition which is mitigated in the one-CPU case by only having a single
active thread at a time?
From: Alexander Ivash<mailto:elderorb@xxxxxxxxx>
Sent: Thursday, July 21, 2016 3:31 AM
To: wdmaudiodev@xxxxxxxxxxxxx<mailto:wdmaudiodev@xxxxxxxxxxxxx>
Subject: [wdmaudiodev] AVStream virtual audio driver: different sound quality
dependently on the number of CPU cores.
What could be the reason for the following behaviour:
On one Windows 7 x64 VM (with 1 CPU) driver works fine (well, with
rare audio artifacts)
On the SAME VM but with 2 CPUs driver works awfully, sound is heavily distorted.
Behaviour seems to not depend (or influence is very low) on using
KSPIN_FLAG_INITIATE_PROCESSING_ON_EVERY_ARRIVAL or
KSPIN_FLAG_ASYNCHRONOUS_PROCESSING
What other things can I check?
Regards, Alexander
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