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From: Robin Holt <holt@sgi.com>
To: Matt Mackall <mpm@selenic.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Tony Luck <tony.luck@gmail.com>,
	fengguang.wu@intel.com, mingo@elte.hu, rostedt@goodmis.org,
	fweisbec@gmail.com, lwoodman@redhat.com, a.p.zijlstra@chello.nl,
	penberg@cs.helsinki.fi, eduard.munteanu@linux360.ro,
	linux-kernel@vger.kernel.org, kosaki.motohiro@jp.fujitsu.com,
	andi@firstfloor.org, adobriyan@gmail.com, linux-mm@kvack.org
Subject: Re: [PATCH 5/5] proc: export more page flags in /proc/kpageflags
Date: Tue, 28 Apr 2009 19:02:57 -0500	[thread overview]
Message-ID: <20090429000257.GB7601@sgi.com> (raw)
In-Reply-To: <1240955395.938.1031.camel@calx>

On Tue, Apr 28, 2009 at 04:49:55PM -0500, Matt Mackall wrote:
> > Reading the state of all of memory in this fashion would be a somewhat
> > peculiar thing to do.
> 
> Not entirely. If you've got, say, a large NUMA box, it could be
> incredibly illustrative to see that "oh, this node is entirely dominated
> by SLAB allocations". Or on a smaller machine "oh, this is fragmented to
> hell and there's no way I'm going to get a huge page". Things you're not
> going to get from individual stats.

I have, in the past, simply used grep on
/sys/devices/system/node/node*/meminfo and gotten the individual stats
I was concerned about.  Not sure how much more detail would have been
needed or useful.  I don't think I can recall a time where I needed to
write another tool.

Thanks,
Robin

WARNING: multiple messages have this Message-ID (diff)
From: Robin Holt <holt@sgi.com>
To: Matt Mackall <mpm@selenic.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Tony Luck <tony.luck@gmail.com>,
	fengguang.wu@intel.com, mingo@elte.hu, rostedt@goodmis.org,
	fweisbec@gmail.com, lwoodman@redhat.com, a.p.zijlstra@chello.nl,
	penberg@cs.helsinki.fi, eduard.munteanu@linux360.ro,
	linux-kernel@vger.kernel.org, kosaki.motohiro@jp.fujitsu.com,
	andi@firstfloor.org, adobriyan@gmail.com, linux-mm@kvack.org
Subject: Re: [PATCH 5/5] proc: export more page flags in /proc/kpageflags
Date: Tue, 28 Apr 2009 19:02:57 -0500	[thread overview]
Message-ID: <20090429000257.GB7601@sgi.com> (raw)
In-Reply-To: <1240955395.938.1031.camel@calx>

On Tue, Apr 28, 2009 at 04:49:55PM -0500, Matt Mackall wrote:
> > Reading the state of all of memory in this fashion would be a somewhat
> > peculiar thing to do.
> 
> Not entirely. If you've got, say, a large NUMA box, it could be
> incredibly illustrative to see that "oh, this node is entirely dominated
> by SLAB allocations". Or on a smaller machine "oh, this is fragmented to
> hell and there's no way I'm going to get a huge page". Things you're not
> going to get from individual stats.

I have, in the past, simply used grep on
/sys/devices/system/node/node*/meminfo and gotten the individual stats
I was concerned about.  Not sure how much more detail would have been
needed or useful.  I don't think I can recall a time where I needed to
write another tool.

Thanks,
Robin

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  reply	other threads:[~2009-04-29  0:03 UTC|newest]

Thread overview: 137+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-28  1:09 [PATCH 0/5] proc: export more page flags in /proc/kpageflags (take 4) Wu Fengguang
2009-04-28  1:09 ` Wu Fengguang
2009-04-28  1:09 ` [PATCH 1/5] pagemap: document clarifications Wu Fengguang
2009-04-28  1:09   ` Wu Fengguang
2009-04-28  7:11   ` Tommi Rantala
2009-04-28  7:11     ` Tommi Rantala
2009-04-28  1:09 ` [PATCH 2/5] pagemap: documentation 9 more exported page flags Wu Fengguang
2009-04-28  1:09   ` Wu Fengguang
2009-04-28  1:09 ` [PATCH 3/5] mm: introduce PageHuge() for testing huge/gigantic pages Wu Fengguang
2009-04-28  1:09   ` Wu Fengguang
2009-04-28  1:09 ` [PATCH 4/5] proc: kpagecount/kpageflags code cleanup Wu Fengguang
2009-04-28  1:09   ` Wu Fengguang
2009-04-28  1:09 ` [PATCH 5/5] proc: export more page flags in /proc/kpageflags Wu Fengguang
2009-04-28  1:09   ` Wu Fengguang
2009-04-28  6:55   ` Ingo Molnar
2009-04-28  6:55     ` Ingo Molnar
2009-04-28  7:40     ` Andi Kleen
2009-04-28  7:40       ` Andi Kleen
2009-04-28  9:04       ` Pekka Enberg
2009-04-28  9:04         ` Pekka Enberg
2009-04-28  9:10         ` Andi Kleen
2009-04-28  9:10           ` Andi Kleen
2009-04-28  9:15           ` Pekka Enberg
2009-04-28  9:15             ` Pekka Enberg
2009-04-28  9:15         ` Ingo Molnar
2009-04-28  9:15           ` Ingo Molnar
2009-04-28  9:19           ` Pekka Enberg
2009-04-28  9:19             ` Pekka Enberg
2009-04-28  9:25             ` Pekka Enberg
2009-04-28  9:25               ` Pekka Enberg
2009-04-28  9:36               ` Wu Fengguang
2009-04-28  9:36                 ` Wu Fengguang
2009-04-28  9:36               ` Ingo Molnar
2009-04-28  9:36                 ` Ingo Molnar
2009-04-28  9:57                 ` Pekka Enberg
2009-04-28  9:57                   ` Pekka Enberg
2009-04-28 10:10                   ` KOSAKI Motohiro
2009-04-28 10:10                     ` KOSAKI Motohiro
2009-04-28 10:21                     ` Pekka Enberg
2009-04-28 10:21                       ` Pekka Enberg
2009-04-28 10:56                       ` Ingo Molnar
2009-04-28 10:56                         ` Ingo Molnar
2009-04-28 11:09                         ` KOSAKI Motohiro
2009-04-28 11:09                           ` KOSAKI Motohiro
2009-04-28 12:42                           ` Ingo Molnar
2009-04-28 12:42                             ` Ingo Molnar
2009-04-28 11:03                   ` Ingo Molnar
2009-04-28 11:03                     ` Ingo Molnar
2009-04-28 17:42                 ` Matt Mackall
2009-04-28 17:42                   ` Matt Mackall
2009-04-28  9:29             ` Ingo Molnar
2009-04-28  9:29               ` Ingo Molnar
2009-04-28  9:34               ` KOSAKI Motohiro
2009-04-28  9:34                 ` KOSAKI Motohiro
2009-04-28  9:38                 ` Ingo Molnar
2009-04-28  9:38                   ` Ingo Molnar
2009-04-28  9:55                   ` Wu Fengguang
2009-04-28  9:55                     ` Wu Fengguang
2009-04-28 10:11                     ` KOSAKI Motohiro
2009-04-28 10:11                       ` KOSAKI Motohiro
2009-04-28 11:05                     ` Ingo Molnar
2009-04-28 11:05                       ` Ingo Molnar
2009-04-28 11:36                       ` Wu Fengguang
2009-04-28 11:36                         ` Wu Fengguang
2009-04-28 12:17                         ` [rfc] object collection tracing (was: [PATCH 5/5] proc: export more page flags in /proc/kpageflags) Ingo Molnar
2009-04-28 12:17                           ` Ingo Molnar
2009-04-28 13:31                           ` Wu Fengguang
2009-04-28 13:31                             ` Wu Fengguang
2009-05-12 13:01                             ` Frederic Weisbecker
2009-05-12 13:01                               ` Frederic Weisbecker
2009-05-17 13:36                               ` Wu Fengguang
2009-05-17 13:55                                 ` Frederic Weisbecker
2009-05-17 13:55                                   ` Frederic Weisbecker
2009-05-17 14:12                                   ` Wu Fengguang
2009-05-17 14:12                                     ` Wu Fengguang
2009-05-18 11:44                                 ` KOSAKI Motohiro
2009-05-18 11:44                                   ` KOSAKI Motohiro
2009-05-18 11:47                                   ` Wu Fengguang
2009-05-18 11:47                                     ` Wu Fengguang
2009-04-28 10:18                   ` [PATCH 5/5] proc: export more page flags in /proc/kpageflags Andi Kleen
2009-04-28 10:18                     ` Andi Kleen
2009-04-28  8:33     ` Wu Fengguang
2009-04-28  8:33       ` Wu Fengguang
2009-04-28  9:24       ` Ingo Molnar
2009-04-28  9:24         ` Ingo Molnar
2009-04-28 18:11       ` Tony Luck
2009-04-28 18:11         ` Tony Luck
2009-04-28 18:34         ` Matt Mackall
2009-04-28 18:34           ` Matt Mackall
2009-04-28 20:47           ` Tony Luck
2009-04-28 20:47             ` Tony Luck
2009-04-28 20:54             ` Andi Kleen
2009-04-28 20:54               ` Andi Kleen
2009-04-28 20:59             ` Matt Mackall
2009-04-28 20:59               ` Matt Mackall
2009-04-28 21:17         ` Andrew Morton
2009-04-28 21:17           ` Andrew Morton
2009-04-28 21:49           ` Matt Mackall
2009-04-28 21:49             ` Matt Mackall
2009-04-29  0:02             ` Robin Holt [this message]
2009-04-29  0:02               ` Robin Holt
2009-04-28 17:49   ` Matt Mackall
2009-04-28 17:49     ` Matt Mackall
2009-04-29  8:05     ` Wu Fengguang
2009-04-29  8:05       ` Wu Fengguang
2009-04-29 19:13       ` Matt Mackall
2009-04-29 19:13         ` Matt Mackall
2009-04-30  1:00         ` Wu Fengguang
2009-04-30  1:00           ` Wu Fengguang
2009-04-28 21:32   ` Andrew Morton
2009-04-28 21:32     ` Andrew Morton
2009-04-28 22:46     ` Matt Mackall
2009-04-28 22:46       ` Matt Mackall
2009-04-28 23:02       ` Andrew Morton
2009-04-28 23:02         ` Andrew Morton
2009-04-28 23:31         ` Matt Mackall
2009-04-28 23:31           ` Matt Mackall
2009-04-28 23:42           ` Andrew Morton
2009-04-28 23:42             ` Andrew Morton
2009-04-28 23:55             ` Matt Mackall
2009-04-28 23:55               ` Matt Mackall
2009-04-29  3:33               ` Wu Fengguang
2009-04-29  3:33                 ` Wu Fengguang
2009-04-29  2:38     ` Wu Fengguang
2009-04-29  2:38       ` Wu Fengguang
2009-04-29  2:55       ` Andrew Morton
2009-04-29  2:55         ` Andrew Morton
2009-04-29  3:48         ` Wu Fengguang
2009-04-29  3:48           ` Wu Fengguang
2009-04-29  5:09           ` Wu Fengguang
2009-04-29  5:09             ` Wu Fengguang
2009-04-29  4:41       ` Nathan Lynch
2009-04-29  4:41         ` Nathan Lynch
2009-04-29  4:41         ` Nathan Lynch
2009-04-29  4:50         ` Andrew Morton
2009-04-29  4:50           ` Andrew Morton
2009-04-29  4:50           ` Andrew Morton

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