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From: Ulrich Drepper <drepper@redhat.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Jeff Garzik <jeff@garzik.org>, Zach Brown <zach.brown@oracle.com>,
	linux-kernel@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Arjan van de Ven <arjan@infradead.org>,
	Christoph Hellwig <hch@infradead.org>,
	Andrew Morton <akpm@zip.com.au>,
	Alan Cox <alan@lxorguk.ukuu.org.uk>,
	Evgeniy Polyakov <johnpol@2ka.mipt.ru>,
	"David S. Miller" <davem@davemloft.net>,
	Suparna Bhattacharya <suparna@in.ibm.com>,
	Davide Libenzi <davidel@xmailserver.org>,
	Jens Axboe <jens.axboe@oracle.com>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: Syslets, Threadlets, generic AIO support, v6
Date: Wed, 30 May 2007 00:31:58 -0700	[thread overview]
Message-ID: <465D286E.2080807@redhat.com> (raw)
In-Reply-To: <20070530072055.GA3077@elte.hu>

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Ingo Molnar wrote:
> 3 months ago i verified the published kevent vs. epoll benchmark and 
> found that benchmark to be fatally flawed. When i redid it properly 
> kevent showed no significant advantage over epoll.

I'm not going to judge your tests but saying there are no significant
advantages is too one-sided.  There is one huge advantage: the
interface.  A memory-based interface is simply the best form.  File
descriptors are a resource the runtime cannot transparently consume.

- --
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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  reply	other threads:[~2007-05-30  7:33 UTC|newest]

Thread overview: 71+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-29 21:27 Syslets, Threadlets, generic AIO support, v6 Zach Brown
2007-05-29 21:49 ` Linus Torvalds
2007-05-29 22:49   ` Zach Brown
2007-05-29 22:16 ` Jeff Garzik
2007-05-29 23:09   ` Zach Brown
2007-05-29 23:20     ` Ulrich Drepper
2007-05-30  1:11       ` Dave Jones
2007-05-30 17:08         ` Zach Brown
2007-05-30  7:26     ` Ingo Molnar
2007-05-30  7:20   ` Ingo Molnar
2007-05-30  7:31     ` Ulrich Drepper [this message]
2007-05-30  8:42       ` Ingo Molnar
2007-05-30  8:51         ` Evgeniy Polyakov
2007-05-30  9:05           ` Ingo Molnar
2007-05-30 15:16         ` Linus Torvalds
2007-05-30 15:39         ` Ulrich Drepper
2007-05-30 19:40         ` Davide Libenzi
2007-05-30 19:55           ` Ulrich Drepper
2007-05-30 20:00           ` Linus Torvalds
2007-05-30 20:21             ` Davide Libenzi
2007-05-30 20:31             ` Eric Dumazet
2007-05-30 20:44               ` Linus Torvalds
2007-05-30 21:53                 ` Eric Dumazet
2007-05-30 21:31               ` Davide Libenzi
2007-05-30 21:16             ` Ulrich Drepper
2007-05-30 21:27               ` Linus Torvalds
2007-05-30 21:47                 ` Ulrich Drepper
2007-05-30 22:06                   ` Davide Libenzi
2007-05-30 21:48                 ` Davide Libenzi
2007-05-30 22:01                   ` Linus Torvalds
2007-05-31  6:13                     ` Ingo Molnar
2007-05-31  7:35                       ` Eric Dumazet
2007-05-31  9:26                         ` Ingo Molnar
2007-05-31  9:02                       ` Ingo Molnar
2007-05-31 10:41                         ` Eric Dumazet
2007-05-31 10:50                           ` Ingo Molnar
2007-05-31  9:32                       ` Ingo Molnar
2007-05-31  9:34                         ` Jens Axboe
2007-05-30 22:09                   ` Eric Dumazet
2007-05-30 21:51                 ` David M. Lloyd
2007-05-30 22:24                 ` William Lee Irwin III
2007-05-30 21:38               ` Jeremy Fitzhardinge
2007-05-30 21:39               ` Davide Libenzi
2007-05-30 21:36             ` Jeremy Fitzhardinge
2007-05-30 21:44               ` Linus Torvalds
2007-05-30 21:48                 ` Linus Torvalds
2007-05-30 21:54                   ` Jeremy Fitzhardinge
2007-05-30 22:27             ` Matt Mackall
2007-05-30 22:38               ` William Lee Irwin III
2007-05-30  8:32     ` Evgeniy Polyakov
2007-05-30  8:54       ` Ingo Molnar
2007-05-30  9:30         ` Evgeniy Polyakov
2007-05-30  9:28     ` Jeff Garzik
2007-05-30 13:02       ` Ingo Molnar
2007-05-30 13:20         ` Ingo Molnar
2007-05-30 15:31       ` Linus Torvalds
2007-05-30 16:09         ` Ingo Molnar
2007-05-30 17:57           ` Jens Axboe
2007-05-30 19:05           ` Mark Lord
2007-05-30 19:10             ` Jens Axboe
2007-05-30 19:15             ` Linus Torvalds
2007-05-30 19:32               ` Jens Axboe
2007-05-30 20:07               ` Eric Dumazet
2007-05-30 20:31                 ` Linus Torvalds
2007-05-30 20:46                   ` Eric Dumazet
2007-05-30 19:52           ` Davide Libenzi
2007-05-30  7:40 ` Jens Axboe
2007-05-30 16:55   ` Zach Brown
2007-05-30 17:33     ` Jens Axboe
  -- strict thread matches above, loose matches on Subject: below --
2007-05-31  8:15 Albert Cahalan
2007-05-31  9:50 ` Ingo Molnar

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