On Thu, 2018-06-14 at 15:38 +0200, Hannes Reinecke wrote: > For performance reasons we should be able to allocate all memory > from a given NUMA node, so this patch adds a new parameter > 'rd_numa_node' to allow the user to specify the NUMA node id. > When restricing fio to use the same NUMA node I'm seeing a performance > boost of more than 200%. Passing this information through a kernel module parameter to the brd kernel module seems wrong to me. There can be multiple brd instances. Using a kernel module parameter makes it impossible to specify a different NUMA node for different brd instances. Bart.
