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From: Ilya Dryomov <idryomov@gmail.com>
To: ceph-devel@vger.kernel.org
Cc: Hannes Reinecke <hare@suse.de>
Subject: [PATCH 5/5] rbd: enable multiple blk-mq queues
Date: Thu, 13 Feb 2020 20:26:06 +0100	[thread overview]
Message-ID: <20200213192606.31194-6-idryomov@gmail.com> (raw)
In-Reply-To: <20200213192606.31194-1-idryomov@gmail.com>

From: Hannes Reinecke <hare@suse.de>

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(-)

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 9ff4355fe48a..a4e7b494344c 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -4970,7 +4970,7 @@ 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);
-- 
2.19.2

      parent reply	other threads:[~2020-02-13 19:25 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-13 19:26 [PATCH 0/5] rbd: enable multiple blk-mq queues Ilya Dryomov
2020-02-13 19:26 ` [PATCH 1/5] rbd: kill img_request kref Ilya Dryomov
2020-02-13 19:26 ` [PATCH 2/5] rbd: get rid of img_request_layered_clear() Ilya Dryomov
2020-02-13 19:26 ` [PATCH 3/5] rbd: acquire header_rwsem just once in rbd_queue_workfn() Ilya Dryomov
2020-02-13 19:26 ` [PATCH 4/5] rbd: embed image request in blk-mq pdu Ilya Dryomov
2020-02-13 19:26 ` Ilya Dryomov [this message]

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