Hello Bo, In the meantime I got access to an at91rm9200, too. To help me reproducing the problem: - which options do you use for cyclictest? - Is the system idle or do you run hackbench or similar in parallel? - anything else? Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | -- 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