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From: Nikita Danilov <nikita@clusterfs.com>
To: Ram Gupta <ram.gupta5@gmail.com>
Cc: Michael Loftis <mloftis@wgops.com>,
	"Barry K. Nathan" <barryn@pobox.com>, Al Boldi <a1426z@gawab.com>,
	linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [RFC] VM: I have a dream...
Date: Tue, 24 Jan 2006 18:11:38 +0300	[thread overview]
Message-ID: <17366.17322.923958.838500@gargle.gargle.HOWL> (raw)
In-Reply-To: <728201270601240636p58fead78m781fb104c3d73da9@mail.gmail.com>

Ram Gupta writes:
 > On 1/23/06, Nikita Danilov <nikita@clusterfs.com> wrote:
 > 
 > >
 > > The unique feature that Mac OS X VM does have, on the other hand, is
 > > that it keeps profiles of access patterns of applications, and stores
 > > then in files, associated with executables. This allows to quickly
 > > pre-fault necessary pages during application startup (and this makes OSX
 > > boot so fast).
 > 
 > This feature is interesting though I am not sure about the fast boot
 > part of OSX.
 > as at boot time these applications are all started first time. So
 > there were no access pattern as yet. They still have to be demand

That's the point: information about access patterns is stored in the
file. So next time when application is started (e.g., during boot)
kernel reads that file and pre-faults pages.

 > paged. But yes later accesses may be faster.
 > 
 > Thanks
 > Ram gupta

Nikita.

  parent reply	other threads:[~2006-01-24 15:11 UTC|newest]

Thread overview: 75+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-01-21 18:08 [RFC] VM: I have a dream Al Boldi
2006-01-21 18:42 ` Jamie Lokier
2006-01-21 18:46 ` Avi Kivity
2006-01-23 19:52   ` Bryan Henderson
2006-01-25 22:04     ` Al Boldi
2006-01-26 19:18       ` Bryan Henderson
2006-01-27 16:12         ` Al Boldi
2006-01-27 19:17           ` Bryan Henderson
2006-01-30 13:21             ` Al Boldi
2006-01-30 13:35               ` Kyle Moffett
2006-01-31 15:56                 ` Al Boldi
2006-01-31 16:34                   ` Kyle Moffett
2006-01-31 23:14                     ` Bryan Henderson
2006-01-31 16:34                   ` Lennart Sorensen
2006-01-31 19:23                   ` Jamie Lokier
2006-02-01  4:06                   ` Barry K. Nathan
2006-02-01  9:51                     ` Andrew Walrond
2006-02-01 17:51                       ` Lennart Sorensen
2006-02-01 18:21                         ` Andrew Walrond
2006-02-01 18:25                           ` Lennart Sorensen
2006-02-02 15:11                   ` Alan Cox
2006-02-02 18:59                     ` Al Boldi
2006-02-02 22:33                       ` Bryan Henderson
2006-02-03 14:46                       ` Alan Cox
2006-01-30 16:49               ` Bryan Henderson
2006-01-26  0:03     ` Jon Smirl
2006-01-26 19:48       ` Bryan Henderson
2006-01-22  8:16 ` Pavel Machek
2006-01-22 12:33 ` Robin Holt
2006-01-23 18:03   ` Al Boldi
2006-01-23 18:40     ` Valdis.Kletnieks
2006-01-23 19:26       ` Benjamin LaHaise
2006-01-23 19:40         ` Valdis.Kletnieks
2006-01-23 22:26     ` Pavel Machek
2006-01-22 19:55 ` Barry K. Nathan
2006-01-23  5:23   ` Michael Loftis
2006-01-23  5:46     ` Chase Venters
2006-01-23  8:20       ` Barry K. Nathan
2006-01-23 13:17       ` Jamie Lokier
2006-01-23 20:21         ` Peter Chubb
2006-01-23 15:05     ` Ram Gupta
2006-01-23 15:26       ` Diego Calleja
2006-01-23 16:11         ` linux-os (Dick Johnson)
2006-01-23 16:50           ` Jamie Lokier
2006-01-24  2:08           ` Horst von Brand
2006-01-25  6:13             ` Jamie Lokier
2006-01-25  9:23             ` Bernd Petrovitsch
2006-01-25  9:42               ` Lee Revell
2006-01-25 15:02                 ` Jamie Lokier
2006-01-25 23:24                   ` Lee Revell
2006-01-25 15:05               ` Jamie Lokier
2006-01-25 15:47                 ` Bernd Petrovitsch
2006-01-25 16:09                 ` Diego Calleja
2006-01-25 17:26                   ` Jamie Lokier
2006-01-26 19:13                     ` Bryan Henderson
2006-01-25 23:28                 ` Lee Revell
2006-01-26  1:29                   ` Diego Calleja
2006-01-26  5:01                   ` Jamie Lokier
2006-01-26  5:11                     ` Lee Revell
2006-01-26 14:46                       ` Dave Kleikamp
2006-01-24  2:10           ` Horst von Brand
2006-01-25 22:27         ` Nix
2006-01-26 15:13           ` Denis Vlasenko
2006-01-26 16:23             ` Nix
2006-01-23 20:43       ` Michael Loftis
2006-01-23 22:42         ` Nikita Danilov
2006-01-24 14:36           ` Ram Gupta
2006-01-24 15:04             ` Diego Calleja
2006-01-24 20:59               ` Bryan Henderson
2006-01-24 15:11             ` Nikita Danilov [this message]
2006-01-23 22:57         ` Ram Gupta
2006-01-24 10:08         ` Meelis Roos
2006-02-01 13:58 Al Boldi
2006-02-01 14:38 ` Jamie Lokier
2006-02-02 12:26   ` Al Boldi

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