* Roosen Henri | 2016-06-30 16:05:09 [+0000]: >Hi, Hi, >I just got an info-backtrace while running cyclictest on an iMX28 with kernel 4.1.27-rt30. >This resulted in a latency spike (i'm not sure whether caused by the trace dumping). >Can anyone share some info on this and what to do to prevent the cause of this info-trace? Did you do anything else besides starting cyclictest? RCU was somehow blocked and did not make any progress. This might if a task in an RCU-read section got preempted for long time _or_ is active in that section over a very long time. More information can be found at https://www.kernel.org/doc/Documentation/RCU/stallwarn.txt Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
