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From: Christoph Lameter <clameter@sgi.com>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	miklos@szeredi.hu, akpm@linux-foundation.org, neilb@suse.de,
	dgc@sgi.com, tomoki.sekiyama.qu@hitachi.com,
	nikita@clusterfs.com, trond.myklebust@fys.uio.no,
	yingchao.zhou@gmail.com, richard@rsk.demon.co.uk,
	torvalds@linux-foundation.org, pj@sgi.com
Subject: Re: [PATCH 00/23] per device dirty throttling -v9
Date: Thu, 16 Aug 2007 14:29:17 -0700 (PDT)	[thread overview]
Message-ID: <Pine.LNX.4.64.0708161424010.18861@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20070816074525.065850000@chello.nl>

Is there any way to make the global limits on which the dirty rate 
calculations are based cpuset specific?

A process is part of a cpuset and that cpuset has only a fraction of 
memory of the whole system. 

And only a fraction of that fraction can be dirtied. We do not currently 
enforce such limits which can cause the amount of dirty pages in 
cpusets to become excessively high. I have posted several patchsets that 
deal with that issue. See http://lkml.org/lkml/2007/1/16/5

It seems that limiting dirty pages in cpusets may be much easier to 
realize in the context of this patchset. The tracking of the dirty pages 
per node is not necessary if one would calculate the maximum amount of 
dirtyable pages in a cpuset and use that as a base, right?





  parent reply	other threads:[~2007-08-16 21:29 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-08-16  7:45 [PATCH 00/23] per device dirty throttling -v9 Peter Zijlstra
2007-08-16  7:45 ` [PATCH 01/23] nfs: remove congestion_end() Peter Zijlstra
2007-08-16  7:45 ` [PATCH 02/23] lib: percpu_counter_add Peter Zijlstra
2007-08-17 15:48   ` Josef Sipek
2007-08-16  7:45 ` [PATCH 03/23] lib: percpu_counter_sub Peter Zijlstra
2007-08-16  7:45 ` [PATCH 04/23] lib: percpu_counter variable batch Peter Zijlstra
2007-08-16  7:45 ` [PATCH 05/23] lib: make percpu_counter_add take s64 Peter Zijlstra
2007-08-16  7:45 ` [PATCH 06/23] lib: percpu_counter_set Peter Zijlstra
2007-08-16  7:45 ` [PATCH 07/23] lib: percpu_counter_sum_positive Peter Zijlstra
2007-08-16  7:45 ` [PATCH 08/23] lib: percpu_count_sum() Peter Zijlstra
2007-08-16  7:45 ` [PATCH 09/23] lib: percpu_counter_init error handling Peter Zijlstra
2007-08-17 15:56   ` Josef Sipek
2007-08-17 16:03     ` Peter Zijlstra
2007-08-18  8:09     ` Peter Zijlstra
2007-08-23 18:24       ` Josef Sipek
2007-08-16  7:45 ` [PATCH 10/23] lib: percpu_counter_init_irq Peter Zijlstra
2007-08-16  7:45 ` [PATCH 11/23] mm: bdi init hooks Peter Zijlstra
2007-08-17 16:10   ` Josef Sipek
2007-08-17 16:15     ` Peter Zijlstra
2007-08-16  7:45 ` [PATCH 12/23] containers: " Peter Zijlstra
2007-08-16  7:45 ` [PATCH 13/23] mtd: " Peter Zijlstra
2007-08-16  7:45 ` [PATCH 14/23] mtd: clean up the backing_dev_info usage Peter Zijlstra
2007-08-16  7:45 ` [PATCH 15/23] mtd: give mtdconcat devices their own backing_dev_info Peter Zijlstra
2007-08-16  7:45 ` [PATCH 16/23] mm: scalable bdi statistics counters Peter Zijlstra
2007-08-17 16:20   ` Josef Sipek
2007-08-17 16:23     ` Peter Zijlstra
2007-08-16  7:45 ` [PATCH 17/23] mm: count reclaimable pages per BDI Peter Zijlstra
2007-08-17 16:23   ` Josef Sipek
2007-08-16  7:45 ` [PATCH 18/23] mm: count writeback " Peter Zijlstra
2007-08-16  7:45 ` [PATCH 19/23] mm: expose BDI statistics in sysfs Peter Zijlstra
2007-08-16  7:45 ` [PATCH 20/23] lib: floating proportions Peter Zijlstra
2007-08-16  7:45 ` [PATCH 21/23] mm: per device dirty threshold Peter Zijlstra
2007-08-16  7:45 ` [PATCH 22/23] mm: dirty balancing for tasks Peter Zijlstra
2007-08-16  7:45 ` [PATCH 23/23] debug: sysfs files for the current ratio/size/total Peter Zijlstra
2007-08-16 21:29 ` Christoph Lameter [this message]
2007-08-17  7:19   ` [PATCH 00/23] per device dirty throttling -v9 Peter Zijlstra
2007-08-17 20:37     ` Christoph Lameter
2007-08-16 12:49 Martin Knoblauch
2007-08-16 12:55 ` Peter Zijlstra
2007-08-16 13:21   ` Martin Knoblauch
2007-08-23 15:59   ` Martin Knoblauch
2007-08-23 17:41     ` Peter Zijlstra
2007-08-24 10:47       ` Martin Knoblauch

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