On 15/07/2015 22:02, "C. Bröcker" wrote: >> >> What OS is this? Is it RHEL/CentOS? If so, halt_poll_ns will be in 6.7 >> which will be out in a few days/weeks. >> >> Paolo > OK. As said CentOS 6.6. > But where do I put this parameter? You can add "kvm.halt_poll_ns=500000" to the kernel command line. If you have the parameter, you have the /sys/module/kvm/parameters/halt_poll_ns file. Paolo > Regards, Hansa -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html