Hi, I've just tried to boot https://www.kernel.org/pub/linux/kernel/projects/rt/3.6/patch-3.6.11-rt30.patch.bz2 on MPC5200 (PowerPC) and I experienced some problems. 1) With moderate network traffic, cyclictest reported latencies around 3000 us. 2) By loading the board with "ping -f -s 64000 mpc5200" after a while, the board become unresponsible and console printed the following messages. [217.957488] NOHZ: local_softirq_pending 02 [217.957555] NOHZ: local_softirq_pending 02 [217.968506] NOHZ: local_softirq_pending 02 [220.566778] net_ratelimit: 510909 callbacks suppressed [220.566803] net eth0: transmit queue overrun [...] [220.667671] net eth0: transmit queue overrun [225.626769] net_ratelimit: 433958 callbacks suppressed [225.626793] net eth0: transmit queue overrun [225.637967] net eth0: transmit queue overrun [225.643195] net eth0: transmit queue overrun [225.648491] net eth0: transmit queue overrun [225.653484] net eth0: transmit queue overrun v3.4-rt branch runs perfecly on this board. Is the above expected behaviour for this version of -rt patch? Best regards, -Michal Sojka -- 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