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From: "Bart Van Assche" <bart.vanassche@gmail.com>
To: "Nick Piggin" <nickpiggin@yahoo.com.au>
Cc: "Christoph Lameter" <clameter@sgi.com>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Ingo Molnar" <mingo@elte.hu>,
	"KOSAKI Motohiro" <kosaki.motohiro@jp.fujitsu.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	LKML <linux-kernel@vger.kernel.org>,
	"Linus Torvalds" <torvalds@linux-foundation.org>
Subject: Re: quicklists confuse meminfo
Date: Fri, 21 Mar 2008 13:52:59 +0100	[thread overview]
Message-ID: <e2e108260803210552i4cdef6a5qf8f5076eaac2cf03@mail.gmail.com> (raw)
In-Reply-To: <200803111507.20870.nickpiggin@yahoo.com.au>

On Tue, Mar 11, 2008 at 5:07 AM, Nick Piggin <nickpiggin@yahoo.com.au> wrote:
>  [ ... ]
>
>  This is insane. We add more and more of this NUMA and cpuset and anti-frag
>  and page zeroing logic to the page allocator, and then decide that we
>  don't actually need to obey any of those rules when we're running lat_proc.
>
>  You will never be able to make the page allocator faster than a single list
>  of pages. The reason is because we actually *want* some of these checks and
>  heuristics in the page allocator.
>
>  And I doubt a list of zeroed pages is the right approach. That's just
>  adding more complexity for lat_proc AFAIKS.

Is anyone currently working on this
(http://bugzilla.kernel.org/show_bug.cgi?id=9991) ? I think this
should either be fixed or documented as a known issue.

Bart.

  reply	other threads:[~2008-03-21 12:53 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-09 10:19 Thomas Gleixner
2008-03-09 10:26 ` Bart Van Assche
2008-03-09 10:29 ` Andi Kleen
2008-03-09 10:42 ` KOSAKI Motohiro
2008-03-09 12:00   ` Thomas Gleixner
2008-03-09 11:14 ` Ingo Molnar
2008-03-09 11:56   ` Thomas Gleixner
2008-03-09 12:01     ` Ingo Molnar
2008-03-09 12:49       ` Andi Kleen
2008-03-10 15:51         ` Christoph Lameter
2008-03-09 12:03   ` Johannes Weiner
2008-03-09 12:03   ` KOSAKI Motohiro
2008-03-09 12:09     ` Ingo Molnar
2008-03-09 12:34       ` Ingo Molnar
2008-03-09 12:51         ` KOSAKI Motohiro
2008-03-09 13:20         ` Thomas Gleixner
2008-03-09 18:46         ` Andrew Morton
2008-03-09 20:21           ` Andi Kleen
2008-03-10 15:54           ` Christoph Lameter
2008-03-10 16:43             ` Andi Kleen
2008-03-10 17:19               ` Hugh Dickins
2008-03-10 17:25                 ` Andi Kleen
2008-03-10 17:31                 ` Jeremy Fitzhardinge
2008-03-10 17:53                   ` Andi Kleen
2008-03-10 18:35                     ` Jeremy Fitzhardinge
2008-03-10 19:06                       ` Andi Kleen
2008-03-10 20:54                       ` H. Peter Anvin
2008-03-10 21:26                         ` Jeremy Fitzhardinge
2008-03-11  4:07             ` Nick Piggin
2008-03-21 12:52               ` Bart Van Assche [this message]
2008-03-21 14:45                 ` Ingo Molnar
2008-03-26  7:45                   ` Bart Van Assche
2008-03-26  7:53                     ` Andrew Morton
2008-03-26  8:13                     ` Ingo Molnar
2008-03-26 10:37                       ` Bart Van Assche
2008-03-26 16:34                         ` Christoph Lameter
2008-03-27  9:48                           ` Bart Van Assche
2008-03-09 19:11         ` Arjan van de Ven
2008-03-09 19:25           ` Ingo Molnar
2008-03-09 19:27             ` Ingo Molnar
2008-03-09 19:31               ` Ingo Molnar
2008-03-10 15:57               ` Christoph Lameter
2008-03-10 15:55             ` Christoph Lameter
2008-03-09 12:47       ` KOSAKI Motohiro

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