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Avnu / OpenAvnu

OpenAvnu - an Avnu sponsored repository for Time Sensitive Network (TSN and AVB) technology
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simple_talker example uses 100% of CPU #281

Open MarcinMiklas opened 9 years ago

MarcinMiklas commented 9 years ago

This is probably because there is no call to any sleep() kind of function. The pacing of the packets is done by setting proper at_time in packets and igb_xmit() (or other libigb function) function blocks until wallclock_time == at_time.

pinealservo commented 9 years ago

I don't think there's any blocking going on in the igb functions, it's just busy-looping when resources are exhausted waiting for the next buffer to free up. I suspect it was easier this way than to try to schedule an appropriate amount of sleep time.

grandcat commented 9 years ago

I also wondered about this issue some time ago. My issue contains an interesting approach to reduce CPU usage: #192