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From: Johannes Thumshirn <jthumshirn@suse.de>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Ming Lei <tom.leiming@gmail.com>, Jens Axboe <axboe@kernel.dk>,
	Ming Lei <ming.lei@redhat.com>,
	Bart Van Assche <Bart.VanAssche@wdc.com>,
	"hch@lst.de" <hch@lst.de>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
	"martin.petersen@oracle.com" <martin.petersen@oracle.com>,
	"hare@suse.de" <hare@suse.de>,
	"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
	"rjw@rjwysocki.net" <rjw@rjwysocki.net>,
	"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"jejb@linux.vnet.ibm.com" <jejb@linux.vnet.ibm.com>,
	"adrian.hunter@intel.com" <adrian.hunter@intel.com>
Subject: Re: [PATCH RFC V2 3/3] scsi_mq: enable runtime PM
Date: Wed, 18 Jul 2018 16:18:53 +0200	[thread overview]
Message-ID: <20180718141852.i3aermgwhmvxwjx7@linux-x5ow.site> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1807181010390.29549-100000@netrider.rowland.org>

On Wed, Jul 18, 2018 at 10:12:37AM -0400, Alan Stern wrote:
> As one extra reminder...  People who care about extreme performance can 
> perfectly well disable CONFIG_PM in their kernels.  That should remove 
> any overhead due to runtime PM.

Yes but how likely is this for people who are running their data
center with a distribution kernel.

-- 
Johannes Thumshirn                                          Storage
jthumshirn@suse.de                                +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 N�rnberg
GF: Felix Imend�rffer, Jane Smithard, Graham Norton
HRB 21284 (AG N�rnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850

  reply	other threads:[~2018-07-18 14:18 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-13  8:05 [PATCH RFC V2 0/3] blk-mq: support runtime PM Ming Lei
2018-07-13  8:06 ` [PATCH RFC V2 1/3] block: put runtime PM code into common helpers Ming Lei
2018-07-17 13:21   ` Christoph Hellwig
2018-07-13  8:06 ` [PATCH RFC V2 2/3] blk-mq: prepare for supporting runtime PM Ming Lei
2018-07-13 20:16   ` Alan Stern
2018-07-17 13:23   ` Christoph Hellwig
2018-07-13  8:06 ` [PATCH RFC V2 3/3] scsi_mq: enable " Ming Lei
2018-07-17 13:24   ` Christoph Hellwig
2018-07-17 15:30     ` Ming Lei
2018-07-17 15:34       ` Bart Van Assche
2018-07-17 15:38         ` Ming Lei
2018-07-17 19:50           ` hch
2018-07-17 20:54             ` Alan Stern
2018-07-17 21:49           ` Jens Axboe
2018-07-18 12:06             ` Ming Lei
2018-07-18 12:28               ` Johannes Thumshirn
2018-07-18 12:37                 ` Ming Lei
2018-07-18 14:12                 ` Alan Stern
2018-07-18 14:18                   ` Johannes Thumshirn [this message]
2018-07-18 15:01                     ` Alan Stern
2018-07-19  6:41                       ` Johannes Thumshirn
2018-07-19 14:35                         ` Alan Stern
2018-07-19 14:43                           ` Johannes Thumshirn
2018-07-18 14:50                   ` Jens Axboe
2018-07-18 18:46                     ` Alan Stern
2018-07-18 23:08                     ` Ming Lei
2018-07-18 12:43               ` Hannes Reinecke
2018-07-18 13:05                 ` Ming Lei
2018-07-13 14:21 ` [PATCH RFC V2 0/3] blk-mq: support " Jens Axboe
2018-07-14  2:37   ` Ming Lei
2018-07-14  2:54     ` Jens Axboe
2018-07-16 16:21       ` Bart Van Assche
2018-07-16 16:03     ` Bart Van Assche
2018-07-17  1:12       ` Ming Lei

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