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QMSS MessageQ Becomes Unreliable With Less Descriptors

Chia-Ning Wang
Intellectual 400 points

Hi, I'm trying to swap the transport layer of MessageQ from Shared Memory with QMSS and I'm experiencing problems when I declare less descriptors than the bench-marking example code found in the pdk folder.

I found a post that describes one of the problems I'm seeing and I suspect is from the same cause. Specifically the loss of coherence between L1D cache and L2 cache.

http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/311613/1371556#1371556

I'm also seeing QMSS initialization errors and hangs on MessageQ_put().

These problems all go away when I keep the number of descriptors high. I was wondering if someone could comment on whether the problem cited by the previous post has a fix.

Best Regards,

Chia-Ning Wang