From: Johannes Thumshirn <jthumshirn@suse.de>
To: Christoph Hellwig <hch@infradead.org>
Cc: Jan Kara <jack@suse.cz>,
linux-nvdimm@lists.01.org, mhocko@suse.cz, linux-mm@kvack.org,
linux-fsdevel@vger.kernel.org
Subject: Re: Problems with VM_MIXEDMAP removal from /proc/<pid>/smaps
Date: Thu, 4 Oct 2018 12:09:49 +0200 [thread overview]
Message-ID: <20181004100949.GF6682@linux-x5ow.site> (raw)
In-Reply-To: <20181002150634.GA22209@infradead.org>
On Tue, Oct 02, 2018 at 08:06:34AM -0700, Christoph Hellwig wrote:
> There is no promise, sorry.
Well there have been lot's of articles on for instance lwn.net [1] [2]
[3] describing how to avoid the "overhead" of the page cache when
running on persistent memory.
So if I would be a database developer, I'd look into them and see how
I could exploit this for my needs.
So even if we don't want to call it a promise, it was at least an
advertisement and people are now taking our word for it.
[1] https://lwn.net/Articles/610174/
[2] https://lwn.net/Articles/717953/
[3] https://lwn.net/Articles/684828/
Byte,
Johannes
--
Johannes Thumshirn Storage
jthumshirn@suse.de +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850
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WARNING: multiple messages have this Message-ID (diff)
From: Johannes Thumshirn <jthumshirn@suse.de>
To: Christoph Hellwig <hch@infradead.org>
Cc: Jan Kara <jack@suse.cz>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
linux-nvdimm@lists.01.org, mhocko@suse.cz,
Dan Williams <dan.j.williams@intel.com>
Subject: Re: Problems with VM_MIXEDMAP removal from /proc/<pid>/smaps
Date: Thu, 4 Oct 2018 12:09:49 +0200 [thread overview]
Message-ID: <20181004100949.GF6682@linux-x5ow.site> (raw)
In-Reply-To: <20181002150634.GA22209@infradead.org>
On Tue, Oct 02, 2018 at 08:06:34AM -0700, Christoph Hellwig wrote:
> There is no promise, sorry.
Well there have been lot's of articles on for instance lwn.net [1] [2]
[3] describing how to avoid the "overhead" of the page cache when
running on persistent memory.
So if I would be a database developer, I'd look into them and see how
I could exploit this for my needs.
So even if we don't want to call it a promise, it was at least an
advertisement and people are now taking our word for it.
[1] https://lwn.net/Articles/610174/
[2] https://lwn.net/Articles/717953/
[3] https://lwn.net/Articles/684828/
Byte,
Johannes
--
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
WARNING: multiple messages have this Message-ID (diff)
From: Johannes Thumshirn <jthumshirn@suse.de>
To: Christoph Hellwig <hch@infradead.org>
Cc: Jan Kara <jack@suse.cz>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
linux-nvdimm@lists.01.org, mhocko@suse.cz,
Dan Williams <dan.j.williams@intel.com>
Subject: Re: Problems with VM_MIXEDMAP removal from /proc/<pid>/smaps
Date: Thu, 4 Oct 2018 12:09:49 +0200 [thread overview]
Message-ID: <20181004100949.GF6682@linux-x5ow.site> (raw)
In-Reply-To: <20181002150634.GA22209@infradead.org>
On Tue, Oct 02, 2018 at 08:06:34AM -0700, Christoph Hellwig wrote:
> There is no promise, sorry.
Well there have been lot's of articles on for instance lwn.net [1] [2]
[3] describing how to avoid the "overhead" of the page cache when
running on persistent memory.
So if I would be a database developer, I'd look into them and see how
I could exploit this for my needs.
So even if we don't want to call it a promise, it was at least an
advertisement and people are now taking our word for it.
[1] https://lwn.net/Articles/610174/
[2] https://lwn.net/Articles/717953/
[3] https://lwn.net/Articles/684828/
Byte,
Johannes
--
Johannes Thumshirn Storage
jthumshirn@suse.de +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nurnberg
GF: Felix Imendorffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nurnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850
next prev parent reply other threads:[~2018-10-04 10:09 UTC|newest]
Thread overview: 124+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-02 10:05 Problems with VM_MIXEDMAP removal from /proc/<pid>/smaps Jan Kara
2018-10-02 10:05 ` Jan Kara
2018-10-02 10:05 ` Jan Kara
2018-10-02 10:50 ` Michal Hocko
2018-10-02 10:50 ` Michal Hocko
2018-10-02 13:32 ` Jan Kara
2018-10-02 13:32 ` Jan Kara
2018-10-02 12:10 ` Johannes Thumshirn
2018-10-02 12:10 ` Johannes Thumshirn
2018-10-02 12:10 ` Johannes Thumshirn
2018-10-02 14:20 ` Johannes Thumshirn
2018-10-02 14:20 ` Johannes Thumshirn
2018-10-02 14:20 ` Johannes Thumshirn
2018-10-02 14:45 ` Christoph Hellwig
2018-10-02 14:45 ` Christoph Hellwig
2018-10-02 15:01 ` Johannes Thumshirn
2018-10-02 15:01 ` Johannes Thumshirn
2018-10-02 15:01 ` Johannes Thumshirn
2018-10-02 15:06 ` Christoph Hellwig
2018-10-02 15:06 ` Christoph Hellwig
2018-10-04 10:09 ` Johannes Thumshirn [this message]
2018-10-04 10:09 ` Johannes Thumshirn
2018-10-04 10:09 ` Johannes Thumshirn
2018-10-05 6:25 ` Christoph Hellwig
2018-10-05 6:25 ` Christoph Hellwig
2018-10-05 6:35 ` Johannes Thumshirn
2018-10-05 6:35 ` Johannes Thumshirn
2018-10-05 6:35 ` Johannes Thumshirn
2018-10-06 1:17 ` Dan Williams
2018-10-06 1:17 ` Dan Williams
2018-10-14 15:47 ` Dan Williams
2018-10-14 15:47 ` Dan Williams
2018-10-17 20:01 ` Dan Williams
2018-10-18 17:43 ` Jan Kara
2018-10-18 17:43 ` Jan Kara
2018-10-18 19:10 ` Dan Williams
2018-10-18 19:10 ` Dan Williams
2018-10-19 3:01 ` Dave Chinner
2018-10-19 3:01 ` Dave Chinner
2018-10-02 14:29 ` Jan Kara
2018-10-02 14:29 ` Jan Kara
2018-10-02 14:29 ` Jan Kara
2018-10-02 14:37 ` Christoph Hellwig
2018-10-02 14:37 ` Christoph Hellwig
2018-10-02 14:37 ` Christoph Hellwig
2018-10-02 14:44 ` Johannes Thumshirn
2018-10-02 14:44 ` Johannes Thumshirn
2018-10-02 14:44 ` Johannes Thumshirn
2018-10-02 14:44 ` Johannes Thumshirn
2018-10-02 14:44 ` Johannes Thumshirn
2018-10-02 14:52 ` Christoph Hellwig
2018-10-02 14:52 ` Christoph Hellwig
2018-10-02 14:52 ` Christoph Hellwig
2018-10-02 15:31 ` Jan Kara
2018-10-02 15:31 ` Jan Kara
2018-10-02 15:31 ` Jan Kara
2018-10-02 20:18 ` Dan Williams
2018-10-02 20:18 ` Dan Williams
2018-10-03 12:50 ` Jan Kara
2018-10-03 12:50 ` Jan Kara
2018-10-03 12:50 ` Jan Kara
2018-10-03 14:38 ` Dan Williams
2018-10-03 14:38 ` Dan Williams
2018-10-03 15:06 ` Jan Kara
2018-10-03 15:06 ` Jan Kara
2018-10-03 15:06 ` Jan Kara
2018-10-03 15:13 ` Dan Williams
2018-10-03 15:13 ` Dan Williams
2018-10-03 15:13 ` Dan Williams
2018-10-03 16:44 ` Jan Kara
2018-10-03 16:44 ` Jan Kara
2018-10-03 16:44 ` Jan Kara
2018-10-03 21:13 ` Dan Williams
2018-10-03 21:13 ` Dan Williams
2018-10-03 21:13 ` Dan Williams
2018-10-04 10:04 ` Johannes Thumshirn
2018-10-04 10:04 ` Johannes Thumshirn
2018-10-04 10:04 ` Johannes Thumshirn
2018-10-04 10:04 ` Johannes Thumshirn
2018-10-04 10:04 ` Johannes Thumshirn
2018-10-02 15:07 ` Jan Kara
2018-10-02 15:07 ` Jan Kara
2018-10-02 15:07 ` Jan Kara
2018-10-17 20:23 ` Jeff Moyer
2018-10-17 20:23 ` Jeff Moyer
2018-10-17 20:23 ` Jeff Moyer
2018-10-17 20:23 ` Jeff Moyer
2018-10-18 0:25 ` Dave Chinner
2018-10-18 0:25 ` Dave Chinner
2018-10-18 0:25 ` Dave Chinner
2018-10-18 14:55 ` Jan Kara
2018-10-18 14:55 ` Jan Kara
2018-10-19 0:43 ` Dave Chinner
2018-10-19 0:43 ` Dave Chinner
2018-10-19 0:43 ` Dave Chinner
2018-10-30 6:30 ` Dan Williams
2018-10-30 6:30 ` Dan Williams
2018-10-30 6:30 ` Dan Williams
2018-10-30 22:49 ` Dave Chinner
2018-10-30 22:49 ` Dave Chinner
2018-10-30 22:49 ` Dave Chinner
2018-10-30 22:59 ` Dan Williams
2018-10-30 22:59 ` Dan Williams
2018-10-30 22:59 ` Dan Williams
2018-10-31 5:59 ` y-goto
2018-10-31 5:59 ` y-goto-LMvhtfratI1BDgjK7y7TUQ
2018-10-31 5:59 ` y-goto
2018-11-01 23:00 ` Dave Chinner
2018-11-01 23:00 ` Dave Chinner
2018-11-01 23:00 ` Dave Chinner
2018-11-02 1:43 ` y-goto
2018-11-02 1:43 ` y-goto-LMvhtfratI1BDgjK7y7TUQ
2018-11-02 1:43 ` y-goto
2018-10-18 21:05 ` Jeff Moyer
2018-10-18 21:05 ` Jeff Moyer
2018-10-18 21:05 ` Jeff Moyer
2018-10-18 21:05 ` Jeff Moyer
2018-10-09 19:43 ` Jeff Moyer
2018-10-09 19:43 ` Jeff Moyer
2018-10-09 19:43 ` Jeff Moyer
2018-10-16 8:25 ` Jan Kara
2018-10-16 8:25 ` Jan Kara
2018-10-16 12:35 ` Jeff Moyer
2018-10-16 12:35 ` Jeff Moyer
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