why the qnx pcm capture is not stability

flyine · July 29, 2009, 1:10am

I run qnx on the VMware.And the Sampling frequency of pcm capture is set to be 16000.The channel is 1.The fragsize is set to be 2048.Every time I request to read 2048 audio data.At this condition the time of every time select() should be 64ms.
But the problem is that the time of select()is not stability.Its time is “…30ms-94ms-30ms-94ms-30ms…”.
Why?
And I change the read size and fragsize.The result is same.one short time and one long time can be getted. there isnot a right time.

maschoen · July 29, 2009, 5:17pm

“I run qnx on the VMware”

“problem is that the time of sele() is not stablity … Why?”

The answer to the question is the first statement.

flyine · July 30, 2009, 1:13am

Thanks for your reply.The problem is solved.VMware is the reason of not stability.

maschoen · July 30, 2009, 1:57am

More likely the underlying OS, MS Windows perhaps?