From: Hannes Reinecke <hare@suse.de>
To: John Garry <john.garry@huawei.com>,
Sumit Saxena <sumit.saxena@broadcom.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
Jens Axboe <axboe@kernel.dk>, Christoph Hellwig <hch@lst.de>,
James Bottomley <james.bottomley@hansenpartnership.com>,
Ming Lei <ming.lei@redhat.com>,
Linux SCSI List <linux-scsi@vger.kernel.org>,
linux-block@vger.kernel.org, Hannes Reinecke <hare@suse.com>
Subject: Re: [PATCH 09/11] megaraid_sas: switch fusion adapters to MQ
Date: Thu, 9 Jan 2020 16:19:23 +0100 [thread overview]
Message-ID: <0a39f7ec-88ec-f00c-6256-858b40efce64@suse.de> (raw)
In-Reply-To: <339f089f-26aa-1cbe-416b-67809ea6791f@huawei.com>
On 1/9/20 12:55 PM, John Garry wrote:
> On 09/12/2019 10:10, Sumit Saxena wrote:
>> On Mon, Dec 2, 2019 at 9:09 PM Hannes Reinecke <hare@suse.de> wrote:
>>>
>>> Fusion adapters can steer completions to individual queues, and
>>> we now have support for shared host-wide tags.
>>> So we can enable multiqueue support for fusion adapters and
>>> drop the hand-crafted interrupt affinity settings.
>>
>> Hi Hannes,
>>
>> Ming Lei also proposed similar changes in megaraid_sas driver some
>> time back and it had resulted in performance drop-
>> https://patchwork.kernel.org/patch/10969511/
>>
>> So, we will do some performance tests with this patch and update you.
>>
>
> Hi Sumit,
>
> I was wondering if you had a chance to do this test yet?
>
> It would be good to know, so we can try to progress this work.
>
> @Hannes, This shared sbitmap work now seems to conflict with Jens work
> on tag caching
> https://lore.kernel.org/linux-block/20200107163037.31745-1-axboe@kernel.dk/T/#t,
> but should be resolvable AFAICS (v1, anyway, which I checked). Anway, we
> seem to have stalled, which I feared...
>
Thanks for the reminder.
That was a topic I was wanting to discuss at LSF; will be sending a
topic then.
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@suse.de +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), GF: Felix Imendörffer
next prev parent reply other threads:[~2020-01-09 15:19 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-02 15:39 [PATCH RFC v5 00/11] blk-mq/scsi: Provide hostwide shared tags for SCSI HBAs Hannes Reinecke
2019-12-02 15:39 ` [PATCH 01/11] blk-mq: Remove some unused function arguments Hannes Reinecke
2019-12-02 15:39 ` [PATCH 02/11] blk-mq: rename BLK_MQ_F_TAG_SHARED as BLK_MQ_F_TAG_QUEUE_SHARED Hannes Reinecke
2019-12-02 15:39 ` [PATCH 03/11] blk-mq: rename blk_mq_update_tag_set_depth() Hannes Reinecke
2019-12-03 14:30 ` John Garry
2019-12-03 14:53 ` Hannes Reinecke
2019-12-02 15:39 ` [PATCH 04/11] blk-mq: Facilitate a shared sbitmap per tagset Hannes Reinecke
2019-12-03 14:54 ` John Garry
2019-12-03 15:02 ` Hannes Reinecke
2019-12-04 10:24 ` John Garry
2019-12-03 16:38 ` Bart Van Assche
2019-12-02 15:39 ` [PATCH 05/11] blk-mq: add WARN_ON in blk_mq_free_rqs() Hannes Reinecke
2019-12-02 15:39 ` [PATCH 06/11] blk-mq: move shared sbitmap into elevator queue Hannes Reinecke
2019-12-02 15:39 ` [PATCH 07/11] scsi: Add template flag 'host_tagset' Hannes Reinecke
2019-12-02 15:39 ` [PATCH 08/11] scsi: hisi_sas: Switch v3 hw to MQ Hannes Reinecke
2019-12-02 15:39 ` [PATCH 09/11] megaraid_sas: switch fusion adapters " Hannes Reinecke
2019-12-09 10:10 ` Sumit Saxena
2019-12-09 11:02 ` Hannes Reinecke
2020-01-10 4:00 ` Sumit Saxena
2020-01-10 12:18 ` John Garry
2020-01-13 17:42 ` John Garry
2020-01-14 7:05 ` Hannes Reinecke
2020-01-16 15:47 ` John Garry
2020-01-16 17:45 ` Hannes Reinecke
2020-01-17 11:40 ` Sumit Saxena
2020-01-17 11:18 ` Sumit Saxena
2020-02-13 10:07 ` John Garry
2020-02-17 10:09 ` Sumit Saxena
2020-01-09 11:55 ` John Garry
2020-01-09 15:19 ` Hannes Reinecke [this message]
2020-01-09 18:17 ` John Garry
2020-01-10 2:00 ` Ming Lei
2020-01-10 12:09 ` John Garry
2020-01-14 13:57 ` John Garry
2019-12-02 15:39 ` [PATCH 10/11] smartpqi: enable host tagset Hannes Reinecke
2019-12-02 15:39 ` [PATCH 11/11] hpsa: enable host_tagset and switch to MQ Hannes Reinecke
2020-02-26 11:09 ` [PATCH RFC v5 00/11] blk-mq/scsi: Provide hostwide shared tags for SCSI HBAs John Garry
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