[Linuxptp-users] Unable to obtain time stamp

[d***@gmx.de]

Hi,

i have two systems with phytec am335x boards running.
One with kernel 3.12.30-rt45 and one with kernel 4.4.19-rt27.
I use both ethernet devices eth0 and eth1.

The synchronizing of the timestamp works.

When i start my own application which reads the ptp timestamp and runs at rt priority
i get sometimes these error messages:

[ 546.816142] cpts: event pool is empty
[ 546.820002] cpts: unable to obtain a time stamp
[ 546.825038] cpts: event pool is empty
[ 546.828895] cpts: unable to obtain a time stamp
[ 546.834031] cpts: event pool is empty
[ 546.837885] cpts: unable to obtain a time stamp
[ 546.842884] cpts: event pool is empty


Sometimes it stops after a while and sometimes i have to reset the system.

What can i do to avoid this problem?

Thanks

DSP