Hello, I use cyclictest -t1 -p80 -n -i1000 and have 100% CPU load with a while(1) application. Further I use the disknoise script from the rt-tests on an NFS mounted root filesystem. This gives approx 13000 ethernet interrupts per second. On a 1.8G Pentm cyclictest shows a max. of 74us On a 1.5G Core2 SMP kernel cyclictest shows a max. of 222us Is this normal? Can it be related to the CONFIG_SCHED_MC that I selected? Note: I still use 2.6.22.1 and I noticed SMP issues with later version, but upgrading to the latest kernel would require a lot of testing to be repeated. Greetings Gerrit - 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