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From: Ingo Oeser <netdev@axxeo.de>
To: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Cc: "David S. Miller" <davem@davemloft.net>,
	jengelh@linux01.gwdg.de, christopher.leech@intel.com,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH 0/8] Intel I/O Acceleration Technology (I/OAT)
Date: Mon, 6 Mar 2006 18:44:07 +0100	[thread overview]
Message-ID: <200603061844.07439.netdev@axxeo.de> (raw)
In-Reply-To: <20060305014324.GA20026@2ka.mipt.ru>

Evgeniy Polyakov wrote:
> On Sat, Mar 04, 2006 at 01:41:44PM -0800, David S. Miller (davem@davemloft.net) wrote:
> > From: Jan Engelhardt <jengelh@linux01.gwdg.de>
> > Date: Sat, 4 Mar 2006 19:46:22 +0100 (MET)
> > 
> > > Does this buy the normal standard desktop user anything?
> > 
> > Absolutely, it optimizes end-node performance.
> 
> It really depends on how it is used.
> According to investigation made for kevent based FS AIO reading,
> get_user_pages() performange graph looks like sqrt() function

Hmm, so I should resurrect my user page table walker abstraction?

There I would hand each page to a "recording" function, which
can drop the page from the collection or coalesce it in the collector
if your scatter gather implementation allows it.

Regards

Ingo Oeser

  parent reply	other threads:[~2006-03-06 17:44 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-03-03 21:40 [PATCH 0/8] Intel I/O Acceleration Technology (I/OAT) Chris Leech
2006-03-03 21:42 ` [PATCH 1/8] [I/OAT] DMA memcpy subsystem Chris Leech
2006-03-04  1:40   ` David S. Miller
2006-03-06 19:39     ` Chris Leech
2006-03-04 19:20   ` Benjamin LaHaise
2006-03-06 19:48     ` Chris Leech
2006-03-03 21:42 ` [PATCH 3/8] [I/OAT] Setup the networking subsystem as a DMA client Chris Leech
2006-03-03 21:42 ` [PATCH 4/8] [I/OAT] Utility functions for offloading sk_buff to iovec copies Chris Leech
2006-03-05  7:15   ` Andrew Morton
2006-03-03 21:42 ` [PATCH 5/8] [I/OAT] Structure changes for TCP recv offload to I/OAT Chris Leech
2006-03-05  7:19   ` Andrew Morton
2006-03-03 21:42 ` [PATCH 6/8] [I/OAT] Rename cleanup_rbuf to tcp_cleanup_rbuf and make non-static Chris Leech
2006-03-03 21:42 ` [PATCH 7/8] [I/OAT] Add a sysctl for tuning the I/OAT offloaded I/O threshold Chris Leech
2006-03-04 11:22   ` Alexey Dobriyan
2006-03-05  7:21   ` Andrew Morton
2006-03-03 21:42 ` [PATCH 8/8] [I/OAT] TCP recv offload to I/OAT Chris Leech
2006-03-04 16:39   ` Pavel Machek
2006-03-04 23:18   ` Greg KH
2006-03-06 19:28     ` Chris Leech
2006-03-05  7:30   ` Andrew Morton
2006-03-05  8:45   ` Andrew Morton
2006-03-05 10:27     ` David S. Miller
2006-03-06 19:36     ` Chris Leech
2006-03-03 22:27 ` [PATCH 0/8] Intel I/O Acceleration Technology (I/OAT) Jeff Garzik
2006-03-03 22:39   ` Chris Leech
2006-03-03 22:45     ` Jeff Garzik
2006-03-04 11:35     ` Evgeniy Polyakov
2006-03-05  8:09     ` Andrew Morton
2006-03-05  9:02       ` Discourage duplicate symbols in the kernel? [Was: Intel I/O Acc...] Sam Ravnborg
2006-03-05  9:18         ` Andrew Morton
2006-03-06 19:56           ` Chris Leech
2006-03-03 22:58 ` [PATCH 0/8] Intel I/O Acceleration Technology (I/OAT) Kumar Gala
2006-03-03 23:32   ` Chris Leech
2006-03-04 18:46 ` Jan Engelhardt
2006-03-04 21:41   ` David S. Miller
2006-03-05  1:43     ` Evgeniy Polyakov
2006-03-05  2:08       ` David S. Miller
2006-03-06 17:44       ` Ingo Oeser [this message]
2006-03-07  7:44         ` Evgeniy Polyakov
2006-03-07  9:43           ` Ingo Oeser
2006-03-07 10:16             ` Evgeniy Polyakov
  -- strict thread matches above, loose matches on Subject: below --
2006-03-11  2:27 Chris Leech

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