From: David Rientjes <rientjes@google.com>
To: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Fengguang Wu <fengguang.wu@intel.com>,
David Cohen <david.a.cohen@linux.intel.com>,
Al Viro <viro@zeniv.linux.org.uk>,
Damien Ramonda <damien.ramonda@intel.com>,
Jan Kara <jack@suse.cz>,
Linus Torvalds <torvalds@linux-foundation.org>,
Nishanth Aravamudan <nacc@linux.vnet.ibm.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH V5] mm readahead: Fix readahead fail for no local memory and limit readahead pages
Date: Thu, 13 Feb 2014 00:05:31 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.02.1402130003320.11689@chino.kir.corp.google.com> (raw)
In-Reply-To: <52FC6F2A.30905@linux.vnet.ibm.com>
On Thu, 13 Feb 2014, Raghavendra K T wrote:
> I was able to test (1) implementation on the system where readahead problem
> occurred. Unfortunately it did not help.
>
> Reason seem to be that CONFIG_HAVE_MEMORYLESS_NODES dependency of
> numa_mem_id(). The PPC machine I am facing problem has topology like
> this:
>
> numactl -H
> ---------
> available: 2 nodes (0-1)
> node 0 cpus: 0 1 2 3 4 5 6 7 12 13 14 15 16 17 18 19 20 21 22 23 24 25
> ...
> node 0 size: 0 MB
> node 0 free: 0 MB
> node 1 cpus: 8 9 10 11 32 33 34 35 ...
> node 1 size: 8071 MB
> node 1 free: 2479 MB
> node distances:
> node 0 1
> 0: 10 20
> 1: 20 10
>
> So it seems numa_mem_id() does not help for all the configs..
> Am I missing something ?
>
You need the patch from http://marc.info/?l=linux-mm&m=139093411119013
first.
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next prev parent reply other threads:[~2014-02-13 8:05 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-22 10:53 Raghavendra K T
2014-02-03 8:30 ` Raghavendra K T
2014-02-06 22:51 ` Andrew Morton
2014-02-06 22:58 ` David Rientjes
2014-02-06 23:22 ` Andrew Morton
2014-02-06 23:48 ` David Rientjes
2014-02-06 23:58 ` David Rientjes
2014-02-07 10:42 ` Raghavendra K T
2014-02-07 20:41 ` David Rientjes
2014-02-10 8:21 ` Raghavendra K T
2014-02-10 10:05 ` David Rientjes
2014-02-10 12:25 ` Raghavendra K T
2014-02-10 21:35 ` David Rientjes
2014-02-13 7:07 ` Raghavendra K T
2014-02-13 8:05 ` David Rientjes [this message]
2014-02-13 10:04 ` Raghavendra K T
2014-02-13 22:41 ` David Rientjes
2014-02-14 0:14 ` Nishanth Aravamudan
2014-02-14 0:37 ` Linus Torvalds
2014-02-14 0:45 ` Andrew Morton
2014-02-14 4:32 ` Nishanth Aravamudan
2014-02-14 10:54 ` David Rientjes
2014-02-17 19:28 ` Nishanth Aravamudan
2014-02-17 23:14 ` David Rientjes
2014-02-18 1:31 ` Nishanth Aravamudan
2014-02-17 22:59 ` Linus Torvalds
2014-02-14 7:43 ` Jan Kara
2014-02-17 22:57 ` Linus Torvalds
2014-02-14 5:47 ` Nishanth Aravamudan
2014-02-13 21:06 ` Andrew Morton
2014-02-13 21:42 ` Nishanth Aravamudan
2014-02-10 8:29 ` [RFC PATCH V5 RESEND] " Raghavendra K T
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