From: Mel Gorman <mgorman@suse.de>
To: Linux-MM <linux-mm@kvack.org>
Cc: Nathan Zimmer <nzimmer@sgi.com>, Daniel Rahn <drahn@suse.com>,
Davidlohr Bueso <dbueso@suse.com>,
Dave Hansen <dave.hansen@intel.com>, Tom Vaden <tom.vaden@hp.com>,
Scott Norton <scott.norton@hp.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 0/14] Parallel memory initialisation
Date: Mon, 13 Apr 2015 11:29:24 +0100 [thread overview]
Message-ID: <20150413102924.GC14842@suse.de> (raw)
In-Reply-To: <1428920226-18147-1-git-send-email-mgorman@suse.de>
On Mon, Apr 13, 2015 at 11:16:52AM +0100, Mel Gorman wrote:
> Memory initialisation had been identified as one of the reasons why large
> machines take a long time to boot. Patches were posted a long time ago
> that attempted to move deferred initialisation into the page allocator
> paths. This was rejected on the grounds it should not be necessary to hurt
> the fast paths to parallelise initialisation. This series reuses much of
> the work from that time but defers the initialisation of memory to kswapd
> so that one thread per node initialises memory local to that node. The
> issue is that on the machines I tested with, memory initialisation was not
> a major contributor to boot times. I'm posting the RFC to both review the
> series and see if it actually helps users of very large machines.
>
Robin Holt's address now bounces so remove the address from any replies.
If anyone has an updated address for him that he wants to use then let
me know. Otherwise, I'll leave the From's and Signed-offs from him as
the old address as it was accurate at the time.
--
Mel Gorman
SUSE Labs
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next prev parent reply other threads:[~2015-04-13 10:29 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-13 10:16 [RFC PATCH 0/14] Parallel memory initialisation Mel Gorman
2015-04-13 10:16 ` [PATCH 01/14] memblock: Introduce a for_each_reserved_mem_region iterator Mel Gorman
2015-04-13 10:16 ` [PATCH 02/14] mm: meminit: Move page initialization into a separate function Mel Gorman
2015-04-13 10:16 ` [PATCH 03/14] mm: meminit: Only set page reserved in the memblock region Mel Gorman
2015-04-13 10:16 ` [PATCH 04/14] mm: page_alloc: Pass PFN to __free_pages_bootmem Mel Gorman
2015-04-13 10:16 ` [PATCH 05/14] mm: meminit: Make __early_pfn_to_nid SMP-safe and introduce meminit_pfn_in_nid Mel Gorman
2015-04-13 10:16 ` [PATCH 06/14] mm: meminit: Inline some helper functions Mel Gorman
2015-04-13 10:16 ` [PATCH 07/14] mm: meminit: Partially initialise memory if CONFIG_DEFERRED_MEM_INIT is set Mel Gorman
2015-04-13 10:17 ` [PATCH 08/14] mm: meminit: Initialise remaining memory in parallel with kswapd Mel Gorman
2015-04-13 10:17 ` [PATCH 09/14] mm: meminit: Minimise number of pfn->page lookups during initialisation Mel Gorman
2015-04-13 10:17 ` [PATCH 10/14] x86: mm: Enable deferred memory initialisation on x86-64 Mel Gorman
2015-04-13 18:21 ` Paul Bolle
2015-04-13 10:17 ` [PATCH 11/14] mm: meminit: Control parallel memory initialisation from command line and config Mel Gorman
2015-04-13 10:17 ` [PATCH 12/14] mm: meminit: Free pages in large chunks where possible Mel Gorman
2015-04-13 10:17 ` [PATCH 13/14] mm: meminit: Reduce number of times pageblocks are set during initialisation Mel Gorman
2015-04-13 10:17 ` [PATCH 14/14] mm: meminit: Remove mminit_verify_page_links Mel Gorman
2015-04-13 10:29 ` Mel Gorman [this message]
2015-04-15 13:15 ` [RFC PATCH 0/14] Parallel memory initialisation Waiman Long
2015-04-15 13:38 ` Mel Gorman
2015-04-15 14:50 ` Waiman Long
2015-04-15 15:44 ` Mel Gorman
2015-04-15 21:37 ` nzimmer
2015-04-16 18:20 ` Waiman Long
2015-04-15 14:27 ` Peter Zijlstra
2015-04-15 14:34 ` Mel Gorman
2015-04-15 14:48 ` Peter Zijlstra
2015-04-15 16:18 ` Waiman Long
2015-04-15 16:42 ` Norton, Scott J
2015-04-16 7:25 ` Andrew Morton
2015-04-16 8:46 ` Mel Gorman
2015-04-16 17:26 ` Andrew Morton
2015-04-16 17:37 ` Mel Gorman
-- strict thread matches above, loose matches on Subject: below --
2015-04-16 7:51 Daniel J Blueman
2015-04-20 3:15 ` Daniel J Blueman
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