| Message ID | 20200131103739.136098-16-hare@suse.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | rbd: switch to blk-mq | expand |
On Fri, Jan 31, 2020 at 11:37:39AM +0100, Hannes Reinecke wrote: > Allocate one queue per CPU and get a performance boost from > higher parallelism. Well, the driver already is using blk-mq so your subject is incorrect. I think you want to say something like "rbd: support multiple queues"
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index cc3e5116fe58..dc3b44177fea 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -5094,7 +5094,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev) rbd_dev->tag_set.queue_depth = rbd_dev->opts->queue_depth; rbd_dev->tag_set.numa_node = NUMA_NO_NODE; rbd_dev->tag_set.flags = BLK_MQ_F_SHOULD_MERGE; - rbd_dev->tag_set.nr_hw_queues = 1; + rbd_dev->tag_set.nr_hw_queues = num_present_cpus(); rbd_dev->tag_set.cmd_size = sizeof(struct rbd_img_request); err = blk_mq_alloc_tag_set(&rbd_dev->tag_set);
Allocate one queue per CPU and get a performance boost from higher parallelism. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/block/rbd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)