From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Stephan von Krawczynski <skraw@ithnet.com>
Cc: Chris Mason <chris.mason@oracle.com>,
sander@humilis.net, Hubert Kario <hka@qbs.com.pl>,
linux-btrfs@vger.kernel.org, Gordan Bobic <gordan@bobich.net>
Subject: Re: SSD Optimizations
Date: Sat, 13 Mar 2010 19:19:01 -0800 [thread overview]
Message-ID: <4B9C55A5.3090200@goop.org> (raw)
In-Reply-To: <20100313174359.ec81c8b7.skraw@ithnet.com>
On 03/13/2010 08:43 AM, Stephan von Krawczynski wrote:
> - Nowadays: being a linux installation today chances are that the matrix has
> you. Quite a lot of installations are virtualized. So your storage is a virtual
> one either, which means it is likely being a fs buffer from the host system,
> i.e. RAM.
>
That would be a strictly amateur-hour implementation. It is very
important for data integrity that at least all writes are synchronous,
and ideally all IO should be uncached in the host. In that case the
performance of the guest's virtual IO device will be broadly similar to
a real hardware device.
J
next prev parent reply other threads:[~2010-03-14 3:19 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-10 19:49 SSD Optimizations Gordan Bobic
2010-03-10 21:14 ` Marcus Fritzsch
2010-03-10 21:22 ` Marcus Fritzsch
2010-03-10 23:13 ` Gordan Bobic
2010-03-11 10:35 ` Daniel J Blueman
2010-03-11 12:03 ` Gordan Bobic
2010-03-10 23:12 ` Mike Fedyk
2010-03-10 23:22 ` Gordan Bobic
2010-03-11 7:38 ` Sander
2010-03-11 10:59 ` Hubert Kario
2010-03-11 11:31 ` Stephan von Krawczynski
2010-03-11 12:17 ` Gordan Bobic
2010-03-11 12:59 ` Stephan von Krawczynski
2010-03-11 13:20 ` Gordan Bobic
2010-03-11 14:01 ` Hubert Kario
2010-03-11 15:35 ` Stephan von Krawczynski
2010-03-11 16:03 ` Gordan Bobic
2010-03-11 16:19 ` Chris Mason
2010-03-12 1:07 ` Hubert Kario
2010-03-12 1:42 ` Chris Mason
2010-03-12 9:15 ` Stephan von Krawczynski
2010-03-12 16:00 ` Hubert Kario
2010-03-13 17:02 ` Stephan von Krawczynski
2010-03-13 19:01 ` Hubert Kario
2010-03-11 16:48 ` Martin K. Petersen
2010-03-11 14:39 ` Sander
2010-03-11 17:35 ` Stephan von Krawczynski
2010-03-11 18:00 ` Chris Mason
2010-03-13 16:43 ` Stephan von Krawczynski
2010-03-13 19:41 ` Hubert Kario
2010-03-13 21:48 ` Chris Mason
2010-03-14 3:19 ` Jeremy Fitzhardinge [this message]
2010-03-11 12:09 ` Gordan Bobic
2010-03-11 16:22 ` Martin K. Petersen
2010-03-11 11:59 ` Gordan Bobic
2010-03-11 15:59 ` Asdo
[not found] ` <4B98F350.6080804@shiftmail.org>
2010-03-11 16:15 ` Gordan Bobic
2010-03-11 14:21 ` Chris Mason
2010-03-11 16:18 ` Gordan Bobic
2010-03-11 16:29 ` Chris Mason
-- strict thread matches above, loose matches on Subject: below --
2010-12-12 17:24 SSD optimizations Paddy Steed
2010-12-13 0:04 ` Gordan Bobic
2010-12-13 5:11 ` Sander
2010-12-13 9:25 ` Gordan Bobic
2010-12-13 14:33 ` Peter Harris
2010-12-13 15:04 ` Gordan Bobic
2010-12-13 15:17 ` cwillu
2010-12-13 16:48 ` Gordan Bobic
2010-12-13 17:17 ` Paddy Steed
2010-12-13 17:47 ` Gordan Bobic
2010-12-13 18:20 ` Tomasz Torcz
2010-12-13 19:34 ` Ric Wheeler
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