From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Christoph Lameter <clameter@engr.sgi.com>
Cc: linux-kernel@vger.kernel.org, Hugh Dickins <hugh@veritas.com>,
linux-mm@kvack.org, Andi Kleen <ak@suse.de>,
Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Subject: Re: [RFC 1/3] Framework for accurate node based statistics
Date: Thu, 08 Dec 2005 09:59:21 +1100 [thread overview]
Message-ID: <43976949.8010205@yahoo.com.au> (raw)
In-Reply-To: <Pine.LNX.4.62.0512071026360.24516@schroedinger.engr.sgi.com>
Christoph Lameter wrote:
> On Wed, 7 Dec 2005, Nick Piggin wrote:
>
>
>>Sorry, I think I meant: why don't you just use the "add all counters
>>from all per-cpu of the node" in order to find the node-statistic?
>
>
> which function is that?
>
I'm thinking of get_page_state_node... but that's not quite the same
thing. I guess sum all per-CPU counters from all zones in the node,
but that's going to be costly on big machines.
So I'm not sure, I guess I don't have any bright ideas... there is the
batching approach used by current pagecache_acct - is something like
that not sufficient either?
--
SUSE Labs, Novell Inc.
Send instant messages to your online friends http://au.messenger.yahoo.com
WARNING: multiple messages have this Message-ID (diff)
From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Christoph Lameter <clameter@engr.sgi.com>
Cc: linux-kernel@vger.kernel.org, Hugh Dickins <hugh@veritas.com>,
linux-mm@kvack.org, Andi Kleen <ak@suse.de>,
Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Subject: Re: [RFC 1/3] Framework for accurate node based statistics
Date: Thu, 08 Dec 2005 09:59:21 +1100 [thread overview]
Message-ID: <43976949.8010205@yahoo.com.au> (raw)
In-Reply-To: <Pine.LNX.4.62.0512071026360.24516@schroedinger.engr.sgi.com>
Christoph Lameter wrote:
> On Wed, 7 Dec 2005, Nick Piggin wrote:
>
>
>>Sorry, I think I meant: why don't you just use the "add all counters
>>from all per-cpu of the node" in order to find the node-statistic?
>
>
> which function is that?
>
I'm thinking of get_page_state_node... but that's not quite the same
thing. I guess sum all per-CPU counters from all zones in the node,
but that's going to be costly on big machines.
So I'm not sure, I guess I don't have any bright ideas... there is the
batching approach used by current pagecache_acct - is something like
that not sufficient either?
--
SUSE Labs, Novell Inc.
Send instant messages to your online friends http://au.messenger.yahoo.com
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next prev parent reply other threads:[~2005-12-07 22:59 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-06 18:28 [RFC 1/3] Framework for accurate node based statistics Christoph Lameter
2005-12-06 18:28 ` Christoph Lameter
2005-12-06 18:28 ` [RFC 2/3] Make nr_mapped a per node counter Christoph Lameter
2005-12-06 18:28 ` Christoph Lameter
2005-12-06 23:05 ` Nick Piggin
2005-12-06 23:05 ` Nick Piggin
2005-12-06 18:28 ` [RFC 3/3] Make nr_pagecache " Christoph Lameter
2005-12-06 18:28 ` Christoph Lameter
2005-12-06 18:35 ` [RFC 1/3] Framework for accurate node based statistics Andi Kleen
2005-12-06 18:35 ` Andi Kleen
2005-12-06 19:08 ` Christoph Lameter
2005-12-06 19:08 ` Christoph Lameter
2005-12-06 19:26 ` Andi Kleen
2005-12-06 19:26 ` Andi Kleen
2005-12-06 19:36 ` Christoph Lameter
2005-12-06 19:36 ` Christoph Lameter
2005-12-06 20:06 ` Andi Kleen
2005-12-06 20:06 ` Andi Kleen
2005-12-06 22:52 ` Christoph Lameter
2005-12-06 22:52 ` Christoph Lameter
2005-12-06 22:52 ` Christoph Lameter
2005-12-07 5:50 ` Keith Owens
2005-12-07 5:50 ` Keith Owens
2005-12-07 5:50 ` Keith Owens
2005-12-07 18:24 ` Christoph Lameter
2005-12-07 18:24 ` Christoph Lameter
2005-12-07 18:24 ` Christoph Lameter
2005-12-07 18:39 ` Luck, Tony
2005-12-07 18:39 ` Luck, Tony
2005-12-07 18:39 ` Luck, Tony
2005-12-07 18:47 ` Christoph Lameter
2005-12-07 18:47 ` Christoph Lameter
2005-12-07 18:47 ` Christoph Lameter
2005-12-06 23:08 ` Nick Piggin
2005-12-06 23:08 ` Nick Piggin
2005-12-06 23:37 ` Christoph Lameter
2005-12-06 23:37 ` Christoph Lameter
2005-12-06 23:40 ` Christoph Lameter
2005-12-06 23:40 ` Christoph Lameter
2005-12-07 6:44 ` Nick Piggin
2005-12-07 6:44 ` Nick Piggin
2005-12-07 18:27 ` Christoph Lameter
2005-12-07 18:27 ` Christoph Lameter
2005-12-07 22:59 ` Nick Piggin [this message]
2005-12-07 22:59 ` Nick Piggin
2005-12-08 0:02 ` Christoph Lameter
2005-12-08 0:02 ` Christoph Lameter
2005-12-08 0:13 ` Nick Piggin
2005-12-08 0:13 ` Nick Piggin
2005-12-08 0:35 ` Christoph Lameter
2005-12-08 0:35 ` Christoph Lameter
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