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From: Ming Lei <ming.lei@redhat.com>
To: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Jens Axboe <axboe@fb.com>,
	"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	Omar Sandoval <osandov@fb.com>,
	"Martin K. Petersen" <martin.petersen@oracle.com>,
	James Bottomley <james.bottomley@hansenpartnership.com>,
	Christoph Hellwig <hch@lst.de>,
	Don Brace <don.brace@microsemi.com>,
	Kashyap Desai <kashyap.desai@broadcom.com>,
	Mike Snitzer <snitzer@redhat.com>, Hannes Reinecke <hare@suse.de>,
	Laurence Oberman <loberman@redhat.com>
Subject: Re: [PATCH 0/3] scsi: scsi-mq: don't hold host_busy in IO path
Date: Sat, 23 Jun 2018 05:43:17 +0800	[thread overview]
Message-ID: <20180622214316.GC2949@ming.t460p> (raw)
In-Reply-To: <994729bc-7ca4-6671-d454-d4612ce59b25@wdc.com>

On Fri, Jun 22, 2018 at 08:29:20AM -0700, Bart Van Assche wrote:
> On 04/20/18 00:00, Ming Lei wrote:
> > This patches removes the expensive atomic opeation on host-wide counter
> > of .host_busy for scsi-mq, and it is observed that IOPS can be increased by
> > 15% with this change in IO test over scsi_debug.
> 
> Hello Ming,
> 
> Do you want to resend these patches to Martin or do you perhaps that I do
> that myself?

Hi Bart,

I will resend it later.

thanks,
Ming

      reply	other threads:[~2018-06-22 21:43 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-20  6:57 [PATCH 0/3] scsi: scsi-mq: don't hold host_busy in IO path Ming Lei
2018-04-20  6:57 ` [PATCH 1/3] scsi: introduce scsi_host_busy() Ming Lei
2018-04-27 15:47   ` Bart Van Assche
2018-04-20  6:57 ` [PATCH 2/3] scsi: read host_busy via scsi_host_busy() Ming Lei
2018-04-27 15:51   ` Bart Van Assche
2018-04-28  8:17     ` Ming Lei
2018-04-20  6:57 ` [PATCH 3/3] scsi: avoid to hold host-wide counter of host_busy for scsi_mq Ming Lei
2018-04-27 16:16   ` Bart Van Assche
2018-04-28  8:26     ` Ming Lei
2018-04-27 15:31 ` [PATCH 0/3] scsi: scsi-mq: don't hold host_busy in IO path Bart Van Assche
2018-04-27 15:39   ` Jens Axboe
2018-04-27 15:48     ` Bart Van Assche
2018-04-27 15:55       ` Laurence Oberman
2018-04-27 16:19       ` Jens Axboe
2018-04-28  8:47     ` Ming Lei
2018-06-22 15:29 ` Bart Van Assche
2018-06-22 21:43   ` Ming Lei [this message]

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