From: Jens Axboe <jens.axboe@oracle.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Miklos Szeredi <miklos@szeredi.hu>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
akpm@linux-foundation.org
Subject: Re: [patch] pipe: add support for shrinking and growing pipes
Date: Thu, 20 May 2010 19:48:55 +0200 [thread overview]
Message-ID: <20100520174855.GV25951@kernel.dk> (raw)
In-Reply-To: <alpine.LFD.2.00.1005201041320.23538@i5.linux-foundation.org>
On Thu, May 20 2010, Linus Torvalds wrote:
>
>
> On Thu, 20 May 2010, Jens Axboe wrote:
> >
> > The main reason I didn't push it before is that I wasn't completely sure
> > that we wanted to use fcntl() for this. But Linus doesn't seem to object
> > on that side at least.
>
> Well, I don't object as long as there is some real use-case. If it's a
> "feature just for the sake of the feature" kind of theoretical "shouldn't
> we be able to do this" thing, I don't think we should do it.
>
> But it sounded like Miklos actually had a reason for the request.
Yeah, I'd say his 4x results pretty much speak for themselves. I've
observed splice being slower as well here for high bandwidth testing,
the 64kb max buffer size ends up hurting there. So I'm very convinced
that this is a good idea. I have been for a while, was just waiting for
someone else to pop up with an independent need and results to help
shove it in :-)
--
Jens Axboe
next prev parent reply other threads:[~2010-05-20 17:48 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-19 16:45 [patch] pipe: add support for shrinking and growing pipes Miklos Szeredi
2010-05-19 16:49 ` Linus Torvalds
2010-05-19 18:05 ` Jens Axboe
2010-05-19 19:05 ` Jens Axboe
2010-05-20 8:33 ` Miklos Szeredi
2010-05-20 8:37 ` Jens Axboe
2010-05-20 17:42 ` Linus Torvalds
2010-05-20 17:48 ` Jens Axboe [this message]
2010-05-21 17:13 ` Rick Sherm
2010-05-23 5:30 ` Michael Kerrisk
2010-05-23 2:38 ` Andrew Morton
2010-05-23 5:52 ` Michael Kerrisk
2010-05-23 7:09 ` Jens Axboe
2010-05-23 9:24 ` Michael Kerrisk
2010-05-23 17:47 ` Jens Axboe
2010-05-24 1:43 ` OGAWA Hirofumi
2010-05-24 4:43 ` Michael Kerrisk
2010-05-24 7:05 ` Jens Axboe
2010-05-24 7:27 ` Michael Kerrisk
2010-05-24 17:35 ` Jens Axboe
2010-05-24 17:52 ` Michael Kerrisk
2010-05-24 17:56 ` Jens Axboe
2010-05-25 4:01 ` Michael Kerrisk
2010-06-01 7:48 ` Jens Axboe
2010-06-01 15:22 ` Linus Torvalds
2010-06-01 16:36 ` Loke, Chetan
2010-05-27 6:49 ` Michael Kerrisk
2010-06-01 7:45 ` Jens Axboe
2010-06-02 19:25 ` Michael Kerrisk
2010-06-03 6:10 ` Jens Axboe
2010-06-03 6:46 ` Michael Kerrisk
2010-06-03 7:01 ` Jens Axboe
2010-06-03 7:05 ` Michael Kerrisk
2010-06-03 7:48 ` Michael Kerrisk
2010-06-03 7:58 ` Michael Kerrisk
2010-06-03 8:29 ` Michael Kerrisk
2010-06-03 8:53 ` Michael Kerrisk
[not found] ` <4C07862D.4090709@fusionio.com>
[not found] ` <AANLkTincO5thcP-yASUtIV41TtY3ZmG9YSU-J5nT2sFg@mail.gmail.com>
2010-06-03 11:11 ` Jens Axboe
[not found] ` <4C078610.6020901@fusionio.com>
[not found] ` <AANLkTinhO5oRDPXyXaeAOZU3i55eBKsx4iFMOzwm98na@mail.gmail.com>
[not found] ` <AANLkTin_8MU3AbJ_KeXr2uTxtRFJ5ABmBAyigU6m-C6u@mail.gmail.com>
2010-06-03 11:12 ` Jens Axboe
2010-06-03 11:32 ` Miklos Szeredi
2010-06-03 11:37 ` Jens Axboe
2010-06-03 12:45 ` Miklos Szeredi
2010-06-03 12:50 ` Jens Axboe
2010-06-19 5:45 ` Michael Kerrisk
2010-06-19 18:13 ` Jens Axboe
2010-06-20 5:37 ` Michael Kerrisk
2010-06-03 16:06 ` Miklos Szeredi
2010-05-24 7:04 ` Jens Axboe
2010-05-24 7:28 ` Michael Kerrisk
2010-05-24 7:49 ` OGAWA Hirofumi
2010-05-24 14:51 ` Brian Bloniarz
2010-05-24 15:43 ` Michael Kerrisk
2010-05-24 7:46 ` OGAWA Hirofumi
2010-05-24 17:15 ` Jens Axboe
2010-05-24 18:12 ` OGAWA Hirofumi
2010-05-24 18:16 ` Michael Kerrisk
2010-05-20 12:52 ` Andi Kleen
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