Excessive CPU usage when running CAN port

[petebannister]

Due to:

#define LDX_CAN_DEF_TOUT_SEC 0
#define LDX_CAN_DEF_TOUT_USEC 0

The select call in the CAN thread does not block. If non-blocking behaviour would be preferred here, what is the point of using a thread at all? sched_yield does not help to drop the cpu much below 100%.

I would have preferred to be able to open the port and not have a thread created on your behalf. The documentation does not even mention that it starts a thread.

If I hack something to tweak the can_tout value in the private data then there is drastic improvement in CPU.