Hi, I am running Linux 2.6.21-rc4-rt1 on my IBM thinkpad T60 (I have attached the cpuinfo). When i run the hourglass ( http://www.cs.utah.edu/~regehr/hourglass/) ,6 threads each of priority RTHIGH (maxpriority-2). Only one thread (thread 0) seems to be running on cpu#0, all the other thread seems to be competing with each other on cpu#1. command : ./hourglass -n 6 -a -d 60s -w CPU -i HR -p RTHIGH here is a part of output from the hourglass test ---------------------------------------------------------- thread 0 will use high-res timers thread 1 will use high-res timers thread 2 will use high-res timers thread 3 will use high-res timers thread 4 will use high-res timers thread 5 will use high-res timers thread 0 will have priority RTHIGH thread 1 will have priority RTHIGH thread 2 will have priority RTHIGH thread 3 will have priority RTHIGH thread 4 will have priority RTHIGH thread 5 will have priority RTHIGH 8.010864 MB allocated for trace records Hourglass 1.0.1b : 6 threads; 60.000000 seconds; 1828.999688 MHz timestamp counter max gap is 63980 cycles this test will last for 60.000000 seconds numthreads: 6 work done by thrd 0 : 430394547 work done by thrd 1 : 42208618 work done by thrd 2 : 86995526 work done by thrd 3 : 86819711 work done by thrd 4 : 86887798 work done by thrd 5 : 86101724 thread 0 recorded 60.040444 seconds (99.999946 %) thread 1 recorded 12.037532 seconds (20.049028 %) thread 2 recorded 12.030190 seconds (20.036800 %) thread 3 recorded 12.005801 seconds (19.996179 %) thread 4 recorded 12.015195 seconds (20.011824 %) thread 5 recorded 11.907206 seconds (19.831964 %) ------------------------------------------------------------------------------- Should not the threads be schedule fairly between the two cpu's, like say ,3 threads competing for cpu#0 and other 3 for cpu#1 ? Or Am i missing something here ? -- Thanks Giri - 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
