From: Vladislav Bolkhovitin <vst@vlnb.net>
To: "杨苏立 Yang Su Li" <suli@cs.wisc.edu>
Cc: Theodore Ts'o <tytso@mit.edu>,
General Discussion of SQLite Database <sqlite-users@sqlite.org>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Richard Hipp <drh@hwaci.com>
Subject: Re: [sqlite] light weight write barriers
Date: Mon, 12 Nov 2012 22:42:25 -0500 [thread overview]
Message-ID: <50A1C1A1.7060200@vlnb.net> (raw)
In-Reply-To: <CABK4GYMmigmi7YM9A5Aga21ZWoMKgUe3eX-AhPzLw9CnYhpcGA@mail.gmail.com>
杨苏立 Yang Su Li, on 11/10/2012 11:25 PM wrote:
>> SATA's Native Command
>>> Queuing (NCQ) is not equivalent; this allows the drive to reorder
>>> requests (in particular read requests) so they can be serviced more
>>> efficiently, but it does *not* allow the OS to specify a partial,
>>> relative ordering of requests.
>>>
>>
>> And so? If SATA can't do it, does it mean that nobody else can't do it
>> too? I know a plenty of non-SATA devices, which can do the ordering
>> requirements you need.
>>
>
> I would be very much interested in what kind of device support this kind of
> "topological order", and in what settings they are typically used.
>
> Does modern flash/SSD (esp. which are used on smartphones) support this?
>
> If you could point me to some information about this, that would be very
> much appreciated.
I don't think storage in smartphone can support such advanced functionality,
because it tends to be the cheapest, hence the simplest.
But many modern Enterprise SAS drives can do it, because for those customers
performance is the key requirement. Unfortunately, I'm not sure I can name exact
brands and models, because I had my knowledge from NDA'ed docs, so this info can
be also NDA'ed.
Vlad
next prev parent reply other threads:[~2012-11-13 3:42 UTC|newest]
Thread overview: 146+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <415E76CC-A53D-4643-88AB-3D7D7DC56F98@dubeyko.com>
2012-10-06 13:54 ` [PATCH 00/16] f2fs: introduce flash-friendly file system Vyacheslav Dubeyko
2012-10-06 20:06 ` Jaegeuk Kim
2012-10-07 7:09 ` Marco Stornelli
2012-10-07 9:31 ` Jaegeuk Kim
2012-10-07 9:31 ` Jaegeuk Kim
2012-10-07 12:08 ` Vyacheslav Dubeyko
2012-10-07 12:08 ` Vyacheslav Dubeyko
2012-10-08 8:25 ` Jaegeuk Kim
2012-10-08 8:25 ` Jaegeuk Kim
2012-10-08 9:59 ` Namjae Jeon
2012-10-08 9:59 ` Namjae Jeon
2012-10-08 10:52 ` Jaegeuk Kim
2012-10-08 11:21 ` Namjae Jeon
2012-10-08 12:11 ` Jaegeuk Kim
2012-10-09 3:52 ` Namjae Jeon
2012-10-09 8:00 ` Jaegeuk Kim
2012-10-09 8:31 ` Lukáš Czerner
2012-10-09 10:45 ` Jaegeuk Kim
2012-10-09 10:45 ` Jaegeuk Kim
2012-10-09 11:01 ` Lukáš Czerner
2012-10-09 12:01 ` Jaegeuk Kim
2012-10-09 12:39 ` Lukáš Czerner
2012-10-09 13:10 ` Jaegeuk Kim
2012-10-09 21:20 ` Dave Chinner
2012-10-09 21:20 ` Dave Chinner
2012-10-10 2:32 ` Jaegeuk Kim
2012-10-10 4:53 ` Theodore Ts'o
2012-10-10 4:53 ` Theodore Ts'o
2012-10-12 20:55 ` Arnd Bergmann
2012-10-10 10:36 ` David Woodhouse
2012-10-12 20:58 ` Arnd Bergmann
2012-10-13 4:26 ` Namjae Jeon
2012-10-13 12:37 ` Jaegeuk Kim
2012-10-13 12:37 ` Jaegeuk Kim
2012-10-17 11:12 ` Namjae Jeon
[not found] ` <000001cdacef$b2f6eaa0$18e4bfe0$%kim@samsung.com>
2012-10-18 13:39 ` Vyacheslav Dubeyko
2012-10-18 22:14 ` Jaegeuk Kim
2012-10-19 9:20 ` NeilBrown
2012-10-08 19:22 ` Vyacheslav Dubeyko
2012-10-09 7:08 ` Jaegeuk Kim
2012-10-09 7:08 ` Jaegeuk Kim
2012-10-09 19:53 ` Jooyoung Hwang
2012-10-09 19:53 ` Jooyoung Hwang
2012-10-10 8:05 ` Vyacheslav Dubeyko
2012-10-10 9:02 ` Theodore Ts'o
2012-10-10 11:52 ` SQLite on flash (was: [PATCH 00/16] f2fs: introduce flash-friendly file system) Clemens Ladisch
[not found] ` <50756199.1090103-P6GI/4k7KOmELgA04lAiVw@public.gmane.org>
2012-10-10 12:47 ` Richard Hipp
2012-10-10 17:17 ` light weight write barriers Andi Kleen
[not found] ` <m2fw5mtffg.fsf_-_-Vw/NltI1exuRpAAqCnN02g@public.gmane.org>
2012-10-10 17:48 ` Richard Hipp
[not found] ` <CALwJ=MyR+nU3zqi3V3JMuEGNwd8FUsw9xLACJvd0HoBv3kRi0w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-10-11 16:38 ` Nico Williams
2012-10-11 16:38 ` [sqlite] " Nico Williams
[not found] ` <CAK3OfOi3E1ePfzWjq1epFaXsjtn8V_=r3h+PG6ankWW2fOr6GA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-10-11 16:48 ` Nico Williams
2012-10-11 16:48 ` [sqlite] " Nico Williams
2012-10-11 16:32 ` 杨苏立 Yang Su Li
2012-10-11 16:32 ` [sqlite] " 杨苏立 Yang Su Li
2012-10-11 17:41 ` Christoph Hellwig
2012-10-23 19:53 ` Vladislav Bolkhovitin
[not found] ` <5086F5A7.9090406-d+Crzxg7Rs0@public.gmane.org>
2012-10-24 21:17 ` Nico Williams
2012-10-24 21:17 ` [sqlite] " Nico Williams
2012-10-24 22:03 ` david
[not found] ` <alpine.DEB.2.02.1210241447210.8519-Z4YwzcCRHZnr5h6Zg1Auow@public.gmane.org>
2012-10-25 0:20 ` Nico Williams
2012-10-25 0:20 ` [sqlite] " Nico Williams
2012-10-25 1:04 ` david
[not found] ` <alpine.DEB.2.02.1210241748180.8519-Z4YwzcCRHZnr5h6Zg1Auow@public.gmane.org>
2012-10-25 5:18 ` Nico Williams
2012-10-25 5:18 ` [sqlite] " Nico Williams
2012-10-25 6:02 ` Theodore Ts'o
2012-10-25 6:58 ` david
[not found] ` <alpine.DEB.2.02.1210242331060.31862-Z4YwzcCRHZnr5h6Zg1Auow@public.gmane.org>
2012-10-25 14:03 ` Theodore Ts'o
2012-10-25 14:03 ` [sqlite] " Theodore Ts'o
[not found] ` <20121025140327.GB13562-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2012-10-25 18:03 ` david-gFPdbfVZQbY
2012-10-25 18:03 ` [sqlite] " david
[not found] ` <alpine.DEB.2.02.1210251048280.8519-Z4YwzcCRHZnr5h6Zg1Auow@public.gmane.org>
2012-10-25 18:29 ` Theodore Ts'o
2012-10-25 18:29 ` [sqlite] " Theodore Ts'o
2012-11-05 20:03 ` Pavel Machek
[not found] ` <20121105200348.GB15821-5NIqAleC692hcjWhqY66xCZi+YwRKgec@public.gmane.org>
2012-11-05 22:04 ` Theodore Ts'o
2012-11-05 22:04 ` [sqlite] " Theodore Ts'o
[not found] ` <20121105220440.GB25378-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2012-11-05 22:37 ` Richard Hipp
[not found] ` <CALwJ=Mx-uEFLXK2wywekk=0dwrwVFb68wocnH9bjXJmHRsJx3w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-11-05 23:00 ` Theodore Ts'o
2012-11-05 23:00 ` [sqlite] " Theodore Ts'o
2012-10-30 23:49 ` Nico Williams
2012-10-25 5:42 ` Theodore Ts'o
2012-10-25 7:11 ` david
2012-10-27 1:52 ` Vladislav Bolkhovitin
2012-10-25 5:14 ` Theodore Ts'o
2012-10-25 13:03 ` Alan Cox
[not found] ` <20121025140325.49cd7c79-38n7/U1jhRXW96NNrWNlrekiAK3p4hvP@public.gmane.org>
2012-10-25 13:50 ` Theodore Ts'o
2012-10-25 13:50 ` [sqlite] " Theodore Ts'o
2012-10-27 1:55 ` Vladislav Bolkhovitin
2012-10-27 1:54 ` Vladislav Bolkhovitin
[not found] ` <508B3EED.2080003-d+Crzxg7Rs0@public.gmane.org>
2012-10-27 4:44 ` Theodore Ts'o
2012-10-27 4:44 ` [sqlite] " Theodore Ts'o
2012-10-30 22:22 ` Vladislav Bolkhovitin
[not found] ` <5090532D.4050902-d+Crzxg7Rs0@public.gmane.org>
2012-10-31 9:54 ` Alan Cox
2012-10-31 9:54 ` [sqlite] " Alan Cox
2012-11-01 20:18 ` Vladislav Bolkhovitin
[not found] ` <5092D90F.7020105-d+Crzxg7Rs0@public.gmane.org>
2012-11-01 21:24 ` Alan Cox
2012-11-01 21:24 ` [sqlite] " Alan Cox
2012-11-02 0:15 ` Vladislav Bolkhovitin
[not found] ` <20121101212418.140e3a82-38n7/U1jhRXW96NNrWNlrekiAK3p4hvP@public.gmane.org>
2012-11-02 0:38 ` Howard Chu
2012-11-02 0:38 ` [sqlite] " Howard Chu
[not found] ` <50931601.4060102-aQkYFu9vm6AAvxtiuMwx3w@public.gmane.org>
2012-11-02 12:24 ` Richard Hipp
2012-11-13 3:41 ` [sqlite] " Vladislav Bolkhovitin
2012-11-02 12:33 ` Alan Cox
2012-11-02 12:33 ` [sqlite] " Alan Cox
2012-11-13 3:41 ` Vladislav Bolkhovitin
[not found] ` <50A1C15E.2080605-d+Crzxg7Rs0@public.gmane.org>
2012-11-13 17:40 ` Alan Cox
2012-11-13 17:40 ` [sqlite] " Alan Cox
[not found] ` <20121113174000.6457a68b-38n7/U1jhRXW96NNrWNlrekiAK3p4hvP@public.gmane.org>
2012-11-13 19:13 ` Nico Williams
2012-11-13 19:13 ` [sqlite] " Nico Williams
2012-11-15 1:17 ` Vladislav Bolkhovitin
[not found] ` <50A442AF.9020407-d+Crzxg7Rs0@public.gmane.org>
2012-11-15 12:07 ` David Lang
2012-11-15 12:07 ` [sqlite] " David Lang
[not found] ` <alpine.DEB.2.02.1211150353080.32408-UEhY+ZBZOcqqLGM74eQ/YA@public.gmane.org>
2012-11-15 16:14 ` 杨苏立 Yang Su Li
2012-11-17 5:02 ` [sqlite] " Vladislav Bolkhovitin
2012-11-17 5:02 ` Vladislav Bolkhovitin
2012-11-16 15:06 ` Howard Chu
2012-11-16 15:06 ` [sqlite] " Howard Chu
2012-11-16 15:31 ` Ric Wheeler
[not found] ` <50A65C68.6080001-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-11-16 15:54 ` Howard Chu
2012-11-16 15:54 ` [sqlite] " Howard Chu
2012-11-16 18:03 ` Ric Wheeler
2012-11-16 18:03 ` Ric Wheeler
[not found] ` <50A65681.8000204-aQkYFu9vm6AAvxtiuMwx3w@public.gmane.org>
2012-11-16 19:14 ` David Lang
2012-11-16 19:14 ` [sqlite] " David Lang
2012-11-17 5:02 ` Vladislav Bolkhovitin
2012-11-15 17:06 ` Ryan Johnson
2012-11-15 17:06 ` [sqlite] " Ryan Johnson
2012-11-15 22:35 ` Chris Friesen
2012-11-17 5:02 ` Vladislav Bolkhovitin
2012-11-20 1:23 ` Vladislav Bolkhovitin
2012-11-26 20:05 ` Nico Williams
[not found] ` <CAK3OfOjD4XBGfu3cnMwTvCfec0Lvg3zrO16+pXtiFF4UWpFjDw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-11-29 2:15 ` Vladislav Bolkhovitin
2012-11-29 2:15 ` [sqlite] " Vladislav Bolkhovitin
2012-11-15 1:16 ` Vladislav Bolkhovitin
2012-11-13 3:37 ` Vladislav Bolkhovitin
2012-11-11 4:25 ` 杨苏立 Yang Su Li
2012-11-13 3:42 ` Vladislav Bolkhovitin [this message]
2012-10-10 7:57 ` [PATCH 00/16] f2fs: introduce flash-friendly file system Vyacheslav Dubeyko
2012-10-10 9:43 ` Jaegeuk Kim
2012-10-11 3:14 ` Namjae Jeon
[not found] ` <CAN863PuyMkSZtZCvqX+kwei9v=rnbBYVYr3TqBXF_6uxwJe2_Q@mail.gmail.com>
2012-10-17 11:13 ` Namjae Jeon
2012-10-17 23:06 ` Changman Lee
2012-10-12 12:30 ` Vyacheslav Dubeyko
2012-10-12 14:25 ` Jaegeuk Kim
2012-10-07 10:15 ` Vyacheslav Dubeyko
2012-10-07 10:15 ` Vyacheslav Dubeyko
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