Il 02/07/2012 08:41, Rusty Russell ha scritto: >> With the same workload in guest, the guest fires 200K requests to host >> with merges enabled in guest (echo 0 > /sys/block/vdb/queue/nomerges), >> while the guest fires 40000K requests to host with merges disabled in >> guest (echo 2 > /sys/block/vdb/queue/nomerges). This show that the merge >> in block layer reduces the total number of requests fire to host a lot >> (40000K / 200K = 20). >> 40000 / 200 is 200, not 20. :) Paolo -- 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