From: Hannes Reinecke <hare@suse.de>
To: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, linux-nvme@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 11/16] blk-mq: improve plug list sorting
Date: Thu, 1 Nov 2018 10:30:39 +0100 [thread overview]
Message-ID: <eff592b4-df3b-d4df-261c-30acb77ffcf0@suse.de> (raw)
In-Reply-To: <20181030183252.17857-12-axboe@kernel.dk>
On 10/30/18 7:32 PM, Jens Axboe wrote:
> Currently we only look at the software queue, but with support
> for multiple maps, we should also look at the hardware queue.
> This is important since we'll flush out the request list if
> either the software queue or hardware queue don't match.
>
> This sorts by software queue first, then hardware queue if
> that differs. Finally we sort by request location like before.
> This minimizes the flush points per plug list.
>
> Signed-off-by: Jens Axboe <axboe@kernel.dk>
> ---
> block/blk-mq.c | 17 ++++++++++++-----
> 1 file changed, 12 insertions(+), 5 deletions(-)
>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Cheers,
Hannes
WARNING: multiple messages have this Message-ID (diff)
From: hare@suse.de (Hannes Reinecke)
Subject: [PATCH 11/16] blk-mq: improve plug list sorting
Date: Thu, 1 Nov 2018 10:30:39 +0100 [thread overview]
Message-ID: <eff592b4-df3b-d4df-261c-30acb77ffcf0@suse.de> (raw)
In-Reply-To: <20181030183252.17857-12-axboe@kernel.dk>
On 10/30/18 7:32 PM, Jens Axboe wrote:
> Currently we only look at the software queue, but with support
> for multiple maps, we should also look at the hardware queue.
> This is important since we'll flush out the request list if
> either the software queue or hardware queue don't match.
>
> This sorts by software queue first, then hardware queue if
> that differs. Finally we sort by request location like before.
> This minimizes the flush points per plug list.
>
> Signed-off-by: Jens Axboe <axboe at kernel.dk>
> ---
> block/blk-mq.c | 17 ++++++++++++-----
> 1 file changed, 12 insertions(+), 5 deletions(-)
>
Reviewed-by: Hannes Reinecke <hare at suse.com>
Cheers,
Hannes
next prev parent reply other threads:[~2018-11-01 9:30 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-30 18:32 [PATCHSET v3 0/16] blk-mq: Add support for multiple queue maps Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-30 18:32 ` [PATCH 01/16] blk-mq: kill q->mq_map Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 0:28 ` Sagi Grimberg
2018-10-31 0:28 ` Sagi Grimberg
2018-10-30 18:32 ` [PATCH 02/16] blk-mq: abstract out queue map Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 0:31 ` Sagi Grimberg
2018-10-31 0:31 ` Sagi Grimberg
2018-10-31 14:17 ` Jens Axboe
2018-10-31 14:17 ` Jens Axboe
2018-10-30 18:32 ` [PATCH 03/16] blk-mq: provide dummy blk_mq_map_queue_type() helper Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 0:32 ` Sagi Grimberg
2018-10-31 0:32 ` Sagi Grimberg
2018-10-30 18:32 ` [PATCH 04/16] blk-mq: pass in request/bio flags to queue mapping Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 0:37 ` Sagi Grimberg
2018-10-31 0:37 ` Sagi Grimberg
2018-10-31 14:18 ` Jens Axboe
2018-10-31 14:18 ` Jens Axboe
2018-10-30 18:32 ` [PATCH 05/16] blk-mq: allow software queue to map to multiple hardware queues Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 0:49 ` Sagi Grimberg
2018-10-31 0:49 ` Sagi Grimberg
2018-10-31 14:19 ` Jens Axboe
2018-10-31 14:19 ` Jens Axboe
2018-10-30 18:32 ` [PATCH 06/16] blk-mq: add 'type' attribute to the sysfs hctx directory Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 0:53 ` Sagi Grimberg
2018-10-31 0:53 ` Sagi Grimberg
2018-10-31 14:21 ` Jens Axboe
2018-10-31 14:21 ` Jens Axboe
2018-11-01 21:59 ` Omar Sandoval
2018-11-01 21:59 ` Omar Sandoval
2018-11-01 22:50 ` Jens Axboe
2018-11-01 22:50 ` Jens Axboe
2018-10-30 18:32 ` [PATCH 07/16] blk-mq: support multiple hctx maps Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 0:59 ` Sagi Grimberg
2018-10-31 0:59 ` Sagi Grimberg
2018-10-31 14:23 ` Jens Axboe
2018-10-31 14:23 ` Jens Axboe
2018-10-30 18:32 ` [PATCH 08/16] blk-mq: separate number of hardware queues from nr_cpu_ids Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 1:00 ` Sagi Grimberg
2018-10-31 1:00 ` Sagi Grimberg
2018-10-30 18:32 ` [PATCH 09/16] blk-mq: cache request hardware queue mapping Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 1:01 ` Sagi Grimberg
2018-10-31 1:01 ` Sagi Grimberg
2018-11-01 9:27 ` Hannes Reinecke
2018-11-01 9:27 ` Hannes Reinecke
2018-11-01 12:22 ` Jens Axboe
2018-11-01 12:22 ` Jens Axboe
2018-10-30 18:32 ` [PATCH 10/16] blk-mq: cleanup and improve list insertion Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 1:03 ` Sagi Grimberg
2018-10-31 1:03 ` Sagi Grimberg
2018-11-01 9:28 ` Hannes Reinecke
2018-11-01 9:28 ` Hannes Reinecke
2018-10-30 18:32 ` [PATCH 11/16] blk-mq: improve plug list sorting Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 1:04 ` Sagi Grimberg
2018-10-31 1:04 ` Sagi Grimberg
2018-11-01 9:30 ` Hannes Reinecke [this message]
2018-11-01 9:30 ` Hannes Reinecke
2018-10-30 18:32 ` [PATCH 12/16] blk-mq: initial support for multiple queue maps Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 1:14 ` Sagi Grimberg
2018-10-31 1:14 ` Sagi Grimberg
2018-10-30 18:32 ` [PATCH 13/16] irq: add support for allocating (and affinitizing) sets of IRQs Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 1:17 ` Sagi Grimberg
2018-10-31 1:17 ` Sagi Grimberg
2018-11-02 14:37 ` Ming Lei
2018-11-02 14:37 ` Ming Lei
2018-11-02 15:09 ` Keith Busch
2018-11-02 15:09 ` Keith Busch
2018-11-03 2:22 ` Ming Lei
2018-11-03 2:22 ` Ming Lei
2018-10-30 18:32 ` [PATCH 14/16] nvme: utilize two queue maps, one for reads and one for writes Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 1:57 ` Sagi Grimberg
2018-10-31 1:57 ` Sagi Grimberg
2018-10-31 14:32 ` Jens Axboe
2018-10-31 14:32 ` Jens Axboe
2018-10-30 18:32 ` [PATCH 15/16] block: add REQ_HIPRI and inherit it from IOCB_HIPRI Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-31 1:58 ` Sagi Grimberg
2018-10-31 1:58 ` Sagi Grimberg
2018-10-30 18:32 ` [PATCH 16/16] nvme: add separate poll queue map Jens Axboe
2018-10-30 18:32 ` Jens Axboe
2018-10-30 18:35 ` [PATCHSET v3 0/16] blk-mq: Add support for multiple queue maps Keith Busch
2018-10-30 18:35 ` Keith Busch
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