TDA2EVM5777: Does VPE affect FPS performance?

Taekmin Lee

Expert 1445 points

Part Number: TDA2EVM5777

Hi.

I'm testing TIDL_OD Usecase on Linux.

VPE's "chParams [chIdoutParams] [0].Does the numBufsPerCh" parameter affect display FPS?

When I set numBufsPerCh to 4, TIDL performance was about 17FPS.
At this time, a frame drop was happening at the VPE.

but set numBufsPerCh to 6, TIDL performance was about 24FPS.
At this time, a frame drop was not happening at the VPE.

I analyzed the code of VPE, but I'm not sure.

What is the role of the numBufsPerCh parameter in VPE?

Does this affect performance?

I would appreciate it if you let me know.

Regards,

Lee.

0 Rishabh Garg over 7 years ago

Hi Lee,

Can you share the print statistics in both cases i.e. when numBufsPerCh is 4 and when numBufsPerCh is 6.

Regards,

Rishabh

0 Taekmin Lee over 7 years ago in reply to Rishabh Garg

Expert 1445 points

Hi, Rishabh

This is log file.

Regards,

Lee.

0 Anuj Gupta over 7 years ago in reply to Taekmin Lee

Hi,

numBufsPerCh tell how many buffers have been allocated for each channel.

If you allocate more buffer then you will face less buffer drop.

For tidl_od we use 6 buffer by default for our bios usecase.

So please go ahead with 6 buffers only.

Regards,

Anuj

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