From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Ming Lei <ming.lei@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org,
"Martin K . Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org, Omar Sandoval <osandov@fb.com>,
Kashyap Desai <kashyap.desai@broadcom.com>,
Sumanesh Samanta <sumanesh.samanta@broadcom.com>,
"Ewan D . Milne" <emilne@redhat.com>,
Hannes Reinecke <hare@suse.de>
Subject: Re: [PATCH V7 00/13] blk-mq/scsi: tracking device queue depth via sbitmap
Date: Fri, 29 Jan 2021 13:02:12 -0500 [thread overview]
Message-ID: <yq1a6sr1v87.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <20210122023317.687987-1-ming.lei@redhat.com> (Ming Lei's message of "Fri, 22 Jan 2021 10:33:04 +0800")
Ming,
> The last four patches changes SCSI for switching to track device queue
> depth via sbitmap.
>
> The patchset have been tested by Broadcom, and obvious performance boost
> can be observed on megaraid_sas.
This series deadlocks SCSI scanning for me on every system I have in my
test setup (mpt2sas, mpt3sas, megaraid_sas, qla2xxx, lpfc).
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2021-01-29 18:03 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-22 2:33 [PATCH V7 00/13] blk-mq/scsi: tracking device queue depth via sbitmap Ming Lei
2021-01-22 2:33 ` [PATCH V7 01/13] sbitmap: remove sbitmap_clear_bit_unlock Ming Lei
2021-01-22 2:33 ` [PATCH V7 02/13] sbitmap: maintain allocation round_robin in sbitmap Ming Lei
2021-01-22 2:33 ` Ming Lei
2021-01-22 2:33 ` [PATCH V7 03/13] sbitmap: add helpers for updating allocation hint Ming Lei
2021-01-22 2:33 ` [PATCH V7 04/13] sbitmap: move allocation hint into sbitmap Ming Lei
2021-01-22 2:33 ` Ming Lei
2021-01-22 2:33 ` [PATCH V7 05/13] sbitmap: export sbitmap_weight Ming Lei
2021-01-22 2:33 ` [PATCH V7 06/13] sbitmap: add helper of sbitmap_calculate_shift Ming Lei
2021-01-22 2:33 ` [PATCH V7 07/13] blk-mq: add callbacks for storing & retrieving budget token Ming Lei
2021-01-22 2:33 ` [PATCH V7 08/13] blk-mq: return budget token from .get_budget callback Ming Lei
2021-01-22 2:33 ` [PATCH V7 09/13] scsi: put hot fields of scsi_host_template into one cacheline Ming Lei
2021-01-22 2:33 ` [PATCH V7 10/13] megaraid_sas: v2 replace sdev_busy with local counter Ming Lei
2021-01-22 2:33 ` [PATCH V7 11/13] scsi: add scsi_device_busy() to read sdev->device_busy Ming Lei
2021-01-22 2:33 ` [PATCH V7 12/13] scsi: make sure sdev->queue_depth is <= max(shost->can_queue, 1024) Ming Lei
2021-01-22 2:33 ` [PATCH V7 13/13] scsi: replace sdev->device_busy with sbitmap Ming Lei
2021-01-29 18:02 ` Martin K. Petersen [this message]
[not found] ` <20210131115245.GA1979183@T590>
2021-02-01 22:33 ` [PATCH V7 00/13] blk-mq/scsi: tracking device queue depth via sbitmap Martin K. Petersen
2021-02-03 11:14 ` Ming Lei
2021-02-04 2:59 ` Martin K. Petersen
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