Re: [PATCH 3/5] block: null_blk: introduce module parameter of 'g_global_tags'

On 02/03/2018 05:21 AM, Ming Lei wrote: > This patch introduces the parameter of 'g_global_tags' so that we can > test this feature by null_blk easiy. > > Not see obvious performance drop with global_tags when the whole hw > depth is kept as same: > > 1) no 'global_tags', each hw queue depth is

[PATCH 3/5] block: null_blk: introduce module parameter of 'g_global_tags'

This patch introduces the parameter of 'g_global_tags' so that we can test this feature by null_blk easiy. Not see obvious performance drop with global_tags when the whole hw depth is kept as same: 1) no 'global_tags', each hw queue depth is 1, and 4 hw queues modprobe null_blk queue_mode=2