Hello, For research, I am experimenting with increasing the number of VCPUs in the guest OS. I always get the following warning whenever I increased the number of VCPUs beyond 160. "Warning: Number of SMP cpus requested (250) exceeds the recommended cpus supported by KVM (160) Warning: Number of hot-pluggable cpus requested (250) exceeds the recommended cpus supported by KVM (160)" I also observed that the performance of sysbench CPU benchmark degrades exponentially exactly beyond 160 VCPUs. Can anyone explain what is so special about this 160 VCPUs limit that causes this performance degradation? Obviously someone else must also have experimented and hence recommended that 160VCPUs limit in the warning. Thank you, Hardik Bagdi -- 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
