> The patches mainly help with sequential I/O (sequential I/O is normally > submitted from a few CPUs, so existing dm-crypt doesn't parallelize > right). There is a decrease of performance when 12 threads are doing > writes on ramdisk: That's a bit worrying. Could you please find a larger system (4S) in RH and try with that? I suspect you may need to limit the load balancing to smaller groups of CPUs. Querying all other CPUs all the time is unlikely to scale. -Andi -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel