From: Chris Mason <clm@fb.com>
To: "akpm@linux-foundation.org" <akpm@linux-foundation.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
"lsf-pc@lists.linux-foundation.org"
<lsf-pc@lists.linux-foundation.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"rwheeler@redhat.com" <rwheeler@redhat.com>,
"James.Bottomley@hansenpartnership.com"
<James.Bottomley@hansenpartnership.com>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"mgorman@suse.de" <mgorman@suse.de>
Subject: Re: [Lsf-pc] [LSF/MM TOPIC] really large storage sectors - going beyond 4096 bytes
Date: Wed, 22 Jan 2014 20:13:20 +0000 [thread overview]
Message-ID: <1390421691.1198.43.camel@ret.masoncoding.com> (raw)
In-Reply-To: <20140122115002.bb5d01dee836b567a7aad157@linux-foundation.org>
On Wed, 2014-01-22 at 11:50 -0800, Andrew Morton wrote:
> On Wed, 22 Jan 2014 11:30:19 -0800 James Bottomley <James.Bottomley@hansenpartnership.com> wrote:
>
> > But this, I think, is the fundamental point for debate. If we can pull
> > alignment and other tricks to solve 99% of the problem is there a need
> > for radical VM surgery? Is there anything coming down the pipe in the
> > future that may move the devices ahead of the tricks?
>
> I expect it would be relatively simple to get large blocksizes working
> on powerpc with 64k PAGE_SIZE. So before diving in and doing huge
> amounts of work, perhaps someone can do a proof-of-concept on powerpc
> (or ia64) with 64k blocksize.
Maybe 5 drives in raid5 on MD, with 4K coming from each drive. Well
aligned 16K IO will work, everything else will about the same as a rmw
from a single drive.
-chris
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
WARNING: multiple messages have this Message-ID (diff)
From: Chris Mason <clm@fb.com>
To: "akpm@linux-foundation.org" <akpm@linux-foundation.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
"lsf-pc@lists.linux-foundation.org"
<lsf-pc@lists.linux-foundation.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"rwheeler@redhat.com" <rwheeler@redhat.com>,
"James.Bottomley@hansenpartnership.com"
<James.Bottomley@hansenpartnership.com>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"mgorman@suse.de" <mgorman@suse.de>
Subject: Re: [Lsf-pc] [LSF/MM TOPIC] really large storage sectors - going beyond 4096 bytes
Date: Wed, 22 Jan 2014 20:13:20 +0000 [thread overview]
Message-ID: <1390421691.1198.43.camel@ret.masoncoding.com> (raw)
In-Reply-To: <20140122115002.bb5d01dee836b567a7aad157@linux-foundation.org>
On Wed, 2014-01-22 at 11:50 -0800, Andrew Morton wrote:
> On Wed, 22 Jan 2014 11:30:19 -0800 James Bottomley <James.Bottomley@hansenpartnership.com> wrote:
>
> > But this, I think, is the fundamental point for debate. If we can pull
> > alignment and other tricks to solve 99% of the problem is there a need
> > for radical VM surgery? Is there anything coming down the pipe in the
> > future that may move the devices ahead of the tricks?
>
> I expect it would be relatively simple to get large blocksizes working
> on powerpc with 64k PAGE_SIZE. So before diving in and doing huge
> amounts of work, perhaps someone can do a proof-of-concept on powerpc
> (or ia64) with 64k blocksize.
Maybe 5 drives in raid5 on MD, with 4K coming from each drive. Well
aligned 16K IO will work, everything else will about the same as a rmw
from a single drive.
-chris
next prev parent reply other threads:[~2014-01-22 20:13 UTC|newest]
Thread overview: 121+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-20 9:30 LSF/MM 2014 Call For Proposals Mel Gorman
2013-12-20 9:30 ` Mel Gorman
2013-12-20 9:30 ` [Lsf-pc] " Mel Gorman
2014-01-06 22:20 ` [LSF/MM TOPIC] [ATTEND] persistent memory progress, management of storage & file systems Ric Wheeler
2014-01-06 22:20 ` Ric Wheeler
2014-01-06 22:32 ` faibish, sorin
2014-01-06 22:32 ` faibish, sorin
2014-01-07 19:44 ` Joel Becker
2014-01-07 19:44 ` Joel Becker
2014-01-21 7:00 ` LSF/MM 2014 Call For Proposals Michel Lespinasse
2014-01-21 7:00 ` Michel Lespinasse
2014-01-22 3:04 ` [LSF/MM TOPIC] really large storage sectors - going beyond 4096 bytes Ric Wheeler
2014-01-22 3:04 ` Ric Wheeler
2014-01-22 5:20 ` Joel Becker
2014-01-22 5:20 ` Joel Becker
2014-01-22 7:14 ` Hannes Reinecke
2014-01-22 7:14 ` Hannes Reinecke
2014-01-22 7:14 ` Hannes Reinecke
2014-01-22 9:34 ` [Lsf-pc] " Mel Gorman
2014-01-22 9:34 ` Mel Gorman
2014-01-22 14:10 ` Ric Wheeler
2014-01-22 14:10 ` Ric Wheeler
2014-01-22 14:34 ` Mel Gorman
2014-01-22 14:34 ` Mel Gorman
2014-01-22 14:58 ` Ric Wheeler
2014-01-22 14:58 ` Ric Wheeler
2014-01-22 15:19 ` Mel Gorman
2014-01-22 15:19 ` Mel Gorman
2014-01-22 17:02 ` Chris Mason
2014-01-22 17:02 ` Chris Mason
2014-01-22 17:21 ` James Bottomley
2014-01-22 17:21 ` James Bottomley
2014-01-22 18:02 ` Chris Mason
2014-01-22 18:02 ` Chris Mason
2014-01-22 18:13 ` James Bottomley
2014-01-22 18:13 ` James Bottomley
2014-01-22 18:17 ` Ric Wheeler
2014-01-22 18:17 ` Ric Wheeler
2014-01-22 18:35 ` James Bottomley
2014-01-22 18:35 ` James Bottomley
2014-01-22 18:39 ` Ric Wheeler
2014-01-22 18:39 ` Ric Wheeler
2014-01-22 19:30 ` James Bottomley
2014-01-22 19:30 ` James Bottomley
2014-01-22 19:50 ` Andrew Morton
2014-01-22 19:50 ` Andrew Morton
2014-01-22 20:13 ` Chris Mason [this message]
2014-01-22 20:13 ` Chris Mason
2014-01-23 2:46 ` David Lang
2014-01-23 2:46 ` David Lang
2014-01-23 5:21 ` Theodore Ts'o
2014-01-23 5:21 ` Theodore Ts'o
2014-01-23 8:35 ` Dave Chinner
2014-01-23 8:35 ` Dave Chinner
2014-01-23 12:55 ` Theodore Ts'o
2014-01-23 12:55 ` Theodore Ts'o
2014-01-23 19:49 ` Dave Chinner
2014-01-23 19:49 ` Dave Chinner
2014-01-23 21:21 ` Joel Becker
2014-01-23 21:21 ` Joel Becker
2014-01-22 20:57 ` Martin K. Petersen
2014-01-22 20:57 ` Martin K. Petersen
2014-01-22 20:57 ` Martin K. Petersen
2014-01-22 18:37 ` Chris Mason
2014-01-22 18:37 ` Chris Mason
2014-01-22 18:40 ` Ric Wheeler
2014-01-22 18:40 ` Ric Wheeler
2014-01-22 18:47 ` James Bottomley
2014-01-22 18:47 ` James Bottomley
2014-01-23 21:27 ` Joel Becker
2014-01-23 21:27 ` Joel Becker
2014-01-23 21:34 ` Chris Mason
2014-01-23 21:34 ` Chris Mason
2014-01-23 8:27 ` Dave Chinner
2014-01-23 8:27 ` Dave Chinner
2014-01-23 15:47 ` James Bottomley
2014-01-23 15:47 ` James Bottomley
2014-01-23 16:44 ` Mel Gorman
2014-01-23 16:44 ` Mel Gorman
2014-01-23 19:55 ` James Bottomley
2014-01-23 19:55 ` James Bottomley
2014-01-24 10:57 ` Mel Gorman
2014-01-24 10:57 ` Mel Gorman
2014-01-30 4:52 ` Matthew Wilcox
2014-01-30 4:52 ` Matthew Wilcox
2014-01-30 6:01 ` Dave Chinner
2014-01-30 6:01 ` Dave Chinner
2014-01-30 10:50 ` Mel Gorman
2014-01-30 10:50 ` Mel Gorman
2014-01-23 20:34 ` Dave Chinner
2014-01-23 20:34 ` Dave Chinner
2014-01-23 20:54 ` Christoph Lameter
2014-01-23 20:54 ` Christoph Lameter
2014-01-23 8:24 ` Dave Chinner
2014-01-23 8:24 ` Dave Chinner
2014-01-23 20:48 ` Christoph Lameter
2014-01-23 20:48 ` Christoph Lameter
2014-01-22 20:47 ` Martin K. Petersen
2014-01-22 20:47 ` Martin K. Petersen
2014-01-23 8:21 ` Dave Chinner
2014-01-23 8:21 ` Dave Chinner
2014-01-22 15:14 ` Chris Mason
2014-01-22 15:14 ` Chris Mason
2014-01-22 16:03 ` James Bottomley
2014-01-22 16:03 ` James Bottomley
2014-01-22 16:45 ` Ric Wheeler
2014-01-22 16:45 ` Ric Wheeler
2014-01-22 17:00 ` James Bottomley
2014-01-22 17:00 ` James Bottomley
2014-01-22 21:05 ` Jan Kara
2014-01-22 21:05 ` Jan Kara
2014-01-23 20:47 ` Christoph Lameter
2014-01-23 20:47 ` Christoph Lameter
2014-01-24 11:09 ` Mel Gorman
2014-01-24 11:09 ` Mel Gorman
2014-01-24 15:44 ` Christoph Lameter
2014-01-24 15:44 ` Christoph Lameter
2014-01-22 15:54 ` James Bottomley
2014-01-22 15:54 ` James Bottomley
2014-03-14 9:02 ` Update on LSF/MM [was Re: LSF/MM 2014 Call For Proposals] James Bottomley
2014-03-14 9:02 ` James Bottomley
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1390421691.1198.43.camel@ret.masoncoding.com \
--to=clm@fb.com \
--cc=James.Bottomley@hansenpartnership.com \
--cc=akpm@linux-foundation.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-ide@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-scsi@vger.kernel.org \
--cc=lsf-pc@lists.linux-foundation.org \
--cc=mgorman@suse.de \
--cc=rwheeler@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.