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From: Vivek Goyal <vgoyal@redhat.com>
To: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Cc: dzickus@redhat.com, oomichi@mxs.nes.nec.co.jp,
	kumagai-atsushi@mxc.nes.nec.co.jp, kexec@lists.infradead.org
Subject: Re: makedumpfile memory usage grows with system memory size
Date: Mon, 9 Apr 2012 15:00:10 -0400	[thread overview]
Message-ID: <20120409190010.GI1645@redhat.com> (raw)
In-Reply-To: <20120406.101212.193682065.d.hatayama@jp.fujitsu.com>

On Fri, Apr 06, 2012 at 10:12:12AM +0900, HATAYAMA Daisuke wrote:

[..]
> So now we can walk on the memmap array also for free pages like other
> kinds of memory. The question I have now is why the current
> implementation was chosen. Is there any difference between two ways?

I don't know but I am guessing may be going through buddy allocator
data structures is faster when there is tons of memory in the system and
number of free pages is less.

Thanks
Vivek

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  parent reply	other threads:[~2012-04-09 19:00 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-28 21:22 makedumpfile memory usage grows with system memory size Don Zickus
2012-03-29  8:09 ` Ken'ichi Ohmichi
2012-03-29 12:56   ` HATAYAMA Daisuke
2012-03-29 13:25     ` Don Zickus
2012-03-30  0:51       ` HATAYAMA Daisuke
2012-04-02  7:46         ` Atsushi Kumagai
2012-04-05  6:52           ` HATAYAMA Daisuke
2012-04-05 14:34             ` Vivek Goyal
2012-04-06  1:12               ` HATAYAMA Daisuke
2012-04-06  8:59                 ` Atsushi Kumagai
2012-04-06  9:29                   ` HATAYAMA Daisuke
2012-04-09 18:57                     ` Vivek Goyal
2012-04-09 23:58                       ` HATAYAMA Daisuke
2012-04-10 12:52                         ` Vivek Goyal
2012-04-12  3:40                           ` Atsushi Kumagai
2012-04-12  7:47                             ` HATAYAMA Daisuke
     [not found]                               ` <20120427164649.9932a33f.kumagai-atsushi@mxc.nes.nec.co.jp>
2012-04-27 12:52                                 ` Don Zickus
2012-05-11  1:19                                   ` Atsushi Kumagai
2012-05-11 13:26                                     ` Don Zickus
2012-05-15  5:57                                       ` Atsushi Kumagai
2012-05-15 12:35                                         ` Don Zickus
2012-04-27 13:33                                 ` Vivek Goyal
2012-05-14  5:44                                 ` HATAYAMA Daisuke
2012-05-16  8:02                                   ` Atsushi Kumagai
2012-05-17  0:21                                     ` HATAYAMA Daisuke
2012-04-09 19:00                 ` Vivek Goyal [this message]
2012-03-29 13:05   ` Don Zickus
2012-03-30  9:43     ` Atsushi Kumagai
2012-03-30 13:19       ` Don Zickus
2012-04-02 17:15   ` Michael Holzheu
2012-04-06  8:09     ` Atsushi Kumagai
2012-04-11  8:04       ` Michael Holzheu
2012-04-12  8:49         ` Atsushi Kumagai
  -- strict thread matches above, loose matches on Subject: below --
2012-04-02  6:53 tachibana

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