Hi Song, > what's your command to get this log? it seems to have better information > than mine. I just do old-school tracing: # enable all available events echo 1 > /sys/kernel/debug/tracing/events/enable # start tracing echo 1 > /sys/kernel/debug/tracing/tracing_on Then I run cyclictest with -b and --tracemark to stop tracing when a latency hits and write a mark to the file. The trace can then be obtained by: cat /sys/kernel/debug/tracing/trace HTH Christoph
