From: Daniel J Blueman <daniel@numascale.com>
To: Mel Gorman <mgorman@suse.de>, nzimmer <nzimmer@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Waiman Long <waiman.long@hp.com>,
Dave Hansen <dave.hansen@intel.com>,
Scott Norton <scott.norton@hp.com>, Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Steffen Persvold <sp@numascale.com>
Subject: Re: [PATCH] mm: meminit: Finish initialisation of struct pages before basic setup
Date: Thu, 14 May 2015 18:03:03 +0800 [thread overview]
Message-ID: <1431597783.26797.1@cpanel21.proisp.no> (raw)
In-Reply-To: <20150513163157.GR2462@suse.de>
On Thu, May 14, 2015 at 12:31 AM, Mel Gorman <mgorman@suse.de> wrote:
> On Wed, May 13, 2015 at 10:53:33AM -0500, nzimmer wrote:
>> I am just noticed a hang on my largest box.
>> I can only reproduce with large core counts, if I turn down the
>> number of cpus it doesn't have an issue.
>>
>
> Odd. The number of core counts should make little a difference as only
> one CPU per node should be in use. Does sysrq+t give any indication
> how
> or where it is hanging?
I was seeing the same behaviour of 1000ms increasing to 5500ms [1];
this suggests either lock contention or O(n) behaviour.
Nathan, can you check with this ordering of patches from Andrew's cache
[2]? I was getting hanging until I a found them all.
I'll follow up with timing data.
Thanks,
Daniel
-- [1]
[ 73.076117] node 2 initialised, 7732961 pages in 1060ms
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-- [2]
http://ozlabs.org/~akpm/mmots/broken-out/memblock-introduce-a-for_each_reserved_mem_region-iterator.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-move-page-initialization-into-a-separate-function.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-only-set-page-reserved-in-the-memblock-region.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-page_alloc-pass-pfn-to-__free_pages_bootmem.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-make-__early_pfn_to_nid-smp-safe-and-introduce-meminit_pfn_in_nid.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-inline-some-helper-functions.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-inline-some-helper-functions-fix.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-initialise-a-subset-of-struct-pages-if-config_deferred_struct_page_init-is-set.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-initialise-remaining-struct-pages-in-parallel-with-kswapd.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-minimise-number-of-pfn-page-lookups-during-initialisation.patch
http://ozlabs.org/~akpm/mmots/broken-out/x86-mm-enable-deferred-struct-page-initialisation-on-x86-64.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-free-pages-in-large-chunks-where-possible.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-reduce-number-of-times-pageblocks-are-set-during-struct-page-init.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-remove-mminit_verify_page_links.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-initialise-a-subset-of-struct-pages-if-config_deferred_struct_page_init-is-set-fix.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-finish-initialisation-of-struct-pages-before-basic-setup.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-finish-initialisation-of-struct-pages-before-basic-setup-fix.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-reduce-number-of-times-pageblocks-are-set-during-struct-page-init-fix.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-inline-some-helper-functions-fix2.patch
--
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next prev parent reply other threads:[~2015-05-14 10:03 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-28 14:36 [PATCH 0/13] Parallel struct page initialisation v4 Mel Gorman
2015-04-28 14:36 ` [PATCH 01/13] memblock: Introduce a for_each_reserved_mem_region iterator Mel Gorman
2015-04-28 14:36 ` [PATCH 02/13] mm: meminit: Move page initialization into a separate function Mel Gorman
2015-04-28 14:37 ` [PATCH 03/13] mm: meminit: Only set page reserved in the memblock region Mel Gorman
2015-05-22 20:31 ` Tony Luck
2015-05-26 10:22 ` Mel Gorman
2015-04-28 14:37 ` [PATCH 04/13] mm: page_alloc: Pass PFN to __free_pages_bootmem Mel Gorman
2015-05-01 9:20 ` [PATCH] mm: page_alloc: pass PFN to __free_pages_bootmem -fix Mel Gorman
2015-04-28 14:37 ` [PATCH 05/13] mm: meminit: Make __early_pfn_to_nid SMP-safe and introduce meminit_pfn_in_nid Mel Gorman
2015-04-28 14:37 ` [PATCH 06/13] mm: meminit: Inline some helper functions Mel Gorman
2015-04-30 21:53 ` Andrew Morton
2015-04-30 21:55 ` Andrew Morton
2015-05-04 8:33 ` Michal Hocko
2015-05-04 8:38 ` Michal Hocko
2015-04-28 14:37 ` [PATCH 07/13] mm: meminit: Initialise a subset of struct pages if CONFIG_DEFERRED_STRUCT_PAGE_INIT is set Mel Gorman
2015-04-29 21:19 ` Andrew Morton
2015-04-30 8:45 ` Mel Gorman
2015-05-01 9:21 ` [PATCH] mm: meminit: Initialise a subset of struct pages if CONFIG_DEFERRED_STRUCT_PAGE_INIT is set -fix Mel Gorman
2015-07-14 15:54 ` 4.2-rc2: hitting "file-max limit 8192 reached" Dave Hansen
2015-07-14 16:15 ` Andrew Morton
2015-07-15 10:45 ` Mel Gorman
2015-04-28 14:37 ` [PATCH 08/13] mm: meminit: Initialise remaining struct pages in parallel with kswapd Mel Gorman
2015-04-28 14:37 ` [PATCH 09/13] mm: meminit: Minimise number of pfn->page lookups during initialisation Mel Gorman
2015-04-28 14:37 ` [PATCH 10/13] x86: mm: Enable deferred struct page initialisation on x86-64 Mel Gorman
2015-04-28 14:37 ` [PATCH 11/13] mm: meminit: Free pages in large chunks where possible Mel Gorman
2015-04-28 14:37 ` [PATCH 12/13] mm: meminit: Reduce number of times pageblocks are set during struct page init Mel Gorman
2015-05-01 9:23 ` [PATCH] mm: meminit: Reduce number of times pageblocks are set during struct page init -fix Mel Gorman
2015-04-28 14:37 ` [PATCH 13/13] mm: meminit: Remove mminit_verify_page_links Mel Gorman
2015-04-28 16:06 ` [PATCH 0/13] Parallel struct page initialisation v4 Pekka Enberg
2015-04-28 18:38 ` nzimmer
2015-04-30 16:10 ` Daniel J Blueman
2015-04-30 17:12 ` nzimmer
2015-04-30 17:28 ` Mel Gorman
2015-05-02 11:52 ` Elliott, Robert (Server Storage)
2015-04-29 1:16 ` Waiman Long
2015-05-01 22:02 ` Waiman Long
2015-05-02 0:09 ` Waiman Long
2015-05-02 8:52 ` Daniel J Blueman
2015-05-02 16:05 ` Daniel J Blueman
2015-05-04 21:30 ` Andrew Morton
2015-05-05 3:32 ` Waiman Long
2015-05-05 10:45 ` Mel Gorman
2015-05-05 13:55 ` Waiman Long
2015-05-05 14:31 ` Mel Gorman
2015-05-05 15:01 ` Waiman Long
2015-05-06 3:39 ` Waiman Long
2015-05-06 0:55 ` Waiman Long
2015-05-05 20:02 ` Andrew Morton
2015-05-05 22:13 ` Mel Gorman
2015-05-05 22:25 ` Andrew Morton
2015-05-06 7:12 ` Mel Gorman
2015-05-06 10:22 ` Mel Gorman
2015-05-06 12:05 ` Mel Gorman
2015-05-06 17:58 ` Waiman Long
2015-05-07 2:37 ` Waiman Long
2015-05-07 7:21 ` Mel Gorman
2015-05-06 1:21 ` Waiman Long
2015-05-06 2:01 ` Andrew Morton
2015-05-07 7:25 ` [PATCH] mm: meminit: Finish initialisation of struct pages before basic setup Mel Gorman
2015-05-07 22:09 ` Andrew Morton
2015-05-07 22:52 ` Mel Gorman
2015-05-07 23:02 ` Andrew Morton
2015-05-13 15:53 ` nzimmer
2015-05-13 16:31 ` Mel Gorman
2015-05-14 10:03 ` Daniel J Blueman [this message]
2015-05-14 15:47 ` nzimmer
2015-05-19 18:31 ` nzimmer
2015-05-19 19:06 ` Mel Gorman
2015-05-22 6:30 ` Daniel J Blueman
2015-05-22 9:33 ` Mel Gorman
2015-05-22 17:14 ` Waiman Long
2015-05-22 21:43 ` Davidlohr Bueso
2015-05-23 3:49 ` Daniel J Blueman
2015-06-24 22:50 ` Nathan Zimmer
2015-06-25 20:48 ` Mel Gorman
2015-06-25 20:57 ` Mel Gorman
2015-06-25 21:37 ` Nathan Zimmer
2015-06-25 21:34 ` Nathan Zimmer
2015-06-26 10:16 ` Mel Gorman
2015-07-06 17:45 ` Daniel J Blueman
2015-07-09 17:49 ` Nathan Zimmer
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for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).