Hi All, The 1st two patches fixes reply queue selection, and this issue has been reported and can cause IO hang during booting, please consider the two for V4.16. The following 6 patches try to improve hostwide tagset on hpsa and megaraid_sas by making hw queue per NUMA node. I don't have high-performance hpsa and megaraid_sas device at hand. Don Brace, could you test this patchset on concurrent IOs over you hpsa SSD and see if this approach is well? Kashyap, could you test this patchset on your megaraid_sas SSDs? gitweb: https://github.com/ming1/linux/tree/v4.16-rc-host-tags-v3.2 thanks, Ming Hannes Reinecke (1): scsi: Add template flag 'host_tagset' Ming Lei (7): scsi: hpsa: fix selection of reply queue scsi: megaraid_sas: fix selection of reply queue blk-mq: introduce 'start_tag' field to 'struct blk_mq_tags' blk-mq: introduce BLK_MQ_F_HOST_TAGS block: null_blk: introduce module parameter of 'g_host_tags' scsi: hpsa: improve scsi_mq performance via .host_tagset scsi: megaraid: improve scsi_mq performance via .host_tagset block/blk-mq-debugfs.c | 2 + block/blk-mq-sched.c | 2 +- block/blk-mq-tag.c | 13 +++-- block/blk-mq-tag.h | 11 ++-- block/blk-mq.c | 50 +++++++++++++++--- block/blk-mq.h | 3 +- drivers/block/null_blk.c | 6 +++ drivers/scsi/hpsa.c | 79 ++++++++++++++++++++++------- drivers/scsi/hpsa.h | 1 + drivers/scsi/megaraid/megaraid_sas.h | 2 +- drivers/scsi/megaraid/megaraid_sas_base.c | 40 ++++++++++++++- drivers/scsi/megaraid/megaraid_sas_fusion.c | 12 ++--- drivers/scsi/scsi_lib.c | 2 + include/linux/blk-mq.h | 2 + include/scsi/scsi_host.h | 3 ++ 15 files changed, 182 insertions(+), 46 deletions(-) -- 2.9.5
