From: "Theodore Ts'o" <tytso@mit.edu>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Ric Wheeler <rwheeler@redhat.com>, Ingo Molnar <mingo@kernel.org>,
Christoph Hellwig <hch@infradead.org>,
Martin Steigerwald <Martin@lichtvoll.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Dave Chinner <david@fromorbit.com>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: Re: [PATCH, 3.7-rc7, RESEND] fs: revert commit bbdd6808 to fallocate UAPI
Date: Fri, 7 Dec 2012 16:14:40 -0500 [thread overview]
Message-ID: <20121207211440.GD29435@thunk.org> (raw)
In-Reply-To: <20121207193019.GA31591@home.goodmis.org>
On Fri, Dec 07, 2012 at 02:30:19PM -0500, Steven Rostedt wrote:
> How is this similar? By adding this bit, we removed incentive from a
> group of developers that have the means to fix the real issue at hand
> (the performance problem with ext4). Thus, it means that they have a work
> around that's good enough for them, but the rest of us suffer.
That assumes that there **is** a way to claw back the performance
loss, and Chris Mason has demonstrated the performance hit exists with
xfs as well (950 MB/s vs. 400 MB/s; that's more than a factor of two).
Sometimes, you have to make the engineering tradeoffs. That's why
we're engineers, for goodness sakes. Sometimes, it's just not
possible to square the circle.
I don't believe that the technique of forcing people who need that
performance to suffer in order to induce them to try to engineer a
solution which may or may not exist is really the best or fairest way
to go about things.
- Ted
next prev parent reply other threads:[~2012-12-07 21:14 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-19 23:04 [PATCH] fs: revert commit bbdd6808 to fallocate UAPI Dave Chinner
2012-11-20 16:36 ` Christoph Hellwig
2012-11-26 0:28 ` [PATCH, 3.7-rc7, RESEND] " Dave Chinner
2012-11-26 2:55 ` Theodore Ts'o
2012-11-26 6:14 ` Tao Ma
2012-11-26 9:12 ` Dave Chinner
2012-12-05 10:48 ` Martin Steigerwald
2012-12-05 15:45 ` Linus Torvalds
2012-12-05 16:18 ` Martin Steigerwald
2012-12-05 16:33 ` Theodore Ts'o
2012-12-05 17:24 ` Martin Steigerwald
2012-12-05 17:34 ` Theodore Ts'o
2012-12-05 17:55 ` Martin Steigerwald
2012-12-06 0:42 ` Dave Chinner
2012-12-06 9:24 ` Martin Steigerwald
2012-12-05 18:25 ` Linus Torvalds
2012-12-06 1:14 ` Dave Chinner
2012-12-06 3:03 ` Linus Torvalds
2012-12-06 9:37 ` Martin Steigerwald
2012-12-07 1:08 ` Ingo Molnar
2012-12-07 2:40 ` Dave Chinner
2012-12-07 10:24 ` Martin Steigerwald
2012-12-06 12:06 ` Christoph Hellwig
2012-12-06 16:50 ` Theodore Ts'o
2012-12-07 1:57 ` Dave Chinner
2012-12-06 12:05 ` Christoph Hellwig
2012-12-07 1:16 ` Ingo Molnar
2012-12-07 3:19 ` Dave Chinner
2012-12-07 17:36 ` Ric Wheeler
2012-12-07 18:18 ` Linus Torvalds
2012-12-07 19:03 ` Chris Mason
2012-12-07 20:43 ` Theodore Ts'o
2012-12-07 21:09 ` Chris Mason
2012-12-07 21:27 ` Theodore Ts'o
2012-12-07 21:43 ` Chris Mason
2012-12-07 21:49 ` Ric Wheeler
2012-12-07 21:57 ` Chris Mason
2012-12-07 22:51 ` Eric Sandeen
2012-12-07 22:52 ` Eric Sandeen
2012-12-07 21:42 ` Ric Wheeler
2012-12-07 21:57 ` Theodore Ts'o
2012-12-07 22:02 ` Ric Wheeler
2012-12-08 0:39 ` Dave Chinner
2012-12-08 2:52 ` Joel Becker
2012-12-08 4:04 ` Dave Chinner
2012-12-08 0:17 ` Dave Chinner
2012-12-08 1:39 ` Chris Mason
2012-12-10 16:02 ` Chris Mason
2012-12-10 17:37 ` Theodore Ts'o
2012-12-10 18:05 ` Steven Whitehouse
2012-12-10 18:13 ` Theodore Ts'o
2012-12-10 18:20 ` Theodore Ts'o
2012-12-11 12:16 ` Steven Whitehouse
2012-12-11 22:09 ` Dave Chinner
2012-12-10 18:52 ` Ric Wheeler
2012-12-11 0:52 ` Dave Chinner
2012-12-07 19:30 ` Steven Rostedt
2012-12-07 21:14 ` Theodore Ts'o [this message]
2012-12-07 21:47 ` Ric Wheeler
2012-12-07 23:25 ` Howard Chu
2012-12-08 0:50 ` Dave Chinner
2012-12-08 13:52 ` Howard Chu
2012-12-08 14:02 ` Ric Wheeler
2012-12-07 22:01 ` Eric Sandeen
2012-12-09 21:37 ` Ric Wheeler
2012-11-26 11:53 ` Alan Cox
2012-11-26 14:43 ` Theodore Ts'o
2012-11-26 21:12 ` Dave Chinner
2012-11-27 13:44 ` Martin Steigerwald
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