Hi On 2020/12/28 16:28, Ming Lei wrote:
Another candidate solution may be to always return true from hctx_may_queue() for this kind of queue because queue_depth has provided fair allocation for each LUN, and looks not necessary to do that again.
If always return true from hctx_may_queue() in this case, for example, we set queue_depth to 128(if can't, the biggger, the better) for all disks, and test with numjobs=64. The result should be one disk with high iops, and the rest very low. So I think it's better to ensure the max tags a disk can get in this case. Thanks! Yu Kuai
