On 24.05.2013 15:06, Rik van Riel wrote: > Just to rule something out, are you using > transparent huge pages on those systems? On my present test system they are configured in, but I am not using them. # cat /proc/meminfo | grep Huge HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 4096 kB However during my (many) previous experiments the problem also happened with kernels that did not have it configured. Thanks -- Stano -- 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