Hi, I have two x86_64 machines: On the first there is Fedora 18 (x86_64); on the second there is Ubunutu 12.10 (server, 64 bit). I run cat /proc/interrupts on both machines; in both cases, I run this command after an hour when the machine is up. I get: On the fedora machine cat /proc/interrupts | grep TLB TLB: 0 0 TLB shootdowns On the Ubuntu machine, however, there are many TLB shootdowns, on both cores. Can anyone explains why is it so ? rgs, Kevin _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies