From: Mike Travis <travis@sgi.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nathan Zimmer <nzimmer@sgi.com>, Peter Anvin <hpa@zytor.com>,
Ingo Molnar <mingo@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>, Robin Holt <holt@sgi.com>,
Rob Landley <rob@landley.net>,
Daniel J Blueman <daniel@numascale-asia.com>,
Andrew Morton <akpm@linux-foundation.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Yinghai Lu <yinghai@kernel.org>, Mel Gorman <mgorman@suse.de>
Subject: Re: [RFC v3 0/5] Transparent on-demand struct page initialization embedded in the buddy allocator
Date: Tue, 13 Aug 2013 12:06:24 -0700 [thread overview]
Message-ID: <520A83B0.40607@sgi.com> (raw)
In-Reply-To: <520A7514.9020008@sgi.com>
On 8/13/2013 11:04 AM, Mike Travis wrote:
>
>
> On 8/13/2013 10:51 AM, Linus Torvalds wrote:
>> by the time you can log in. And if it then takes another ten minutes
>> until you have the full 16TB initialized, and some things might be a
>> tad slower early on, does anybody really care? The machine will be up
>> and running with plenty of memory, even if it may not be *all* the
>> memory yet.
>
> Before the patches adding memory took ~45 mins for 16TB and almost 2 hours
> for 32TB. Adding it late sped up early boot but late insertion was still
> very slow, where the full 32TB was still not fully inserted after an hour.
> Doing it in parallel along with the memory hotplug lock per node, we got
> it down to the 10-15 minute range.
>
FYI, the system at this time had 128 nodes each with 256GB of memory.
About 252GB was inserted into the absent list from nodes 1 .. 126.
Memory on nodes 0 and 128 was left fully present.
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next prev parent reply other threads:[~2013-08-13 19:06 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-12 2:03 [RFC 0/4] Transparent on-demand struct page initialization embedded in the buddy allocator Robin Holt
2013-07-12 2:03 ` [RFC 1/4] memblock: Introduce a for_each_reserved_mem_region iterator Robin Holt
2013-07-12 2:03 ` [RFC 2/4] Have __free_pages_memory() free in larger chunks Robin Holt
2013-07-12 7:45 ` Robin Holt
2013-07-13 3:08 ` Yinghai Lu
2013-07-16 13:02 ` Sam Ben
2013-07-23 15:32 ` Johannes Weiner
2013-07-12 2:03 ` [RFC 3/4] Seperate page initialization into a separate function Robin Holt
2013-07-13 3:06 ` Yinghai Lu
2013-07-15 3:19 ` Robin Holt
2013-07-12 2:03 ` [RFC 4/4] Sparse initialization of struct page array Robin Holt
2013-07-13 4:19 ` Yinghai Lu
2013-07-13 4:39 ` H. Peter Anvin
2013-07-13 5:31 ` Yinghai Lu
2013-07-13 5:38 ` H. Peter Anvin
2013-07-15 14:08 ` Nathan Zimmer
2013-07-15 17:45 ` Nathan Zimmer
2013-07-15 17:54 ` H. Peter Anvin
2013-07-15 18:26 ` Robin Holt
2013-07-15 18:29 ` H. Peter Anvin
2013-07-23 8:32 ` Ingo Molnar
2013-07-23 11:09 ` Robin Holt
2013-07-23 11:15 ` Robin Holt
2013-07-23 11:41 ` Robin Holt
2013-07-23 11:50 ` Robin Holt
2013-07-16 10:26 ` Robin Holt
2013-07-25 2:25 ` Robin Holt
2013-07-25 12:50 ` Yinghai Lu
2013-07-25 13:42 ` Robin Holt
2013-07-25 13:52 ` Yinghai Lu
2013-07-15 21:30 ` Andrew Morton
2013-07-16 10:38 ` Robin Holt
2013-07-12 8:27 ` [RFC 0/4] Transparent on-demand struct page initialization embedded in the buddy allocator Ingo Molnar
2013-07-12 8:47 ` boot tracing Borislav Petkov
2013-07-12 8:53 ` Ingo Molnar
2013-07-15 1:38 ` Sam Ben
2013-07-23 8:18 ` Ingo Molnar
2013-07-12 9:19 ` [RFC 0/4] Transparent on-demand struct page initialization embedded in the buddy allocator Robert Richter
2013-07-15 15:16 ` Robin Holt
2013-07-16 8:55 ` Joonsoo Kim
2013-07-16 9:08 ` Borislav Petkov
2013-07-23 8:20 ` Ingo Molnar
2013-07-15 15:00 ` Robin Holt
2013-07-17 5:17 ` Sam Ben
2013-07-17 9:30 ` Robin Holt
2013-07-19 23:51 ` Yinghai Lu
2013-07-22 6:13 ` Robin Holt
2013-08-02 17:44 ` [RFC v2 0/5] " Nathan Zimmer
2013-08-02 17:44 ` [RFC v2 1/5] memblock: Introduce a for_each_reserved_mem_region iterator Nathan Zimmer
2013-08-02 17:44 ` [RFC v2 2/5] Have __free_pages_memory() free in larger chunks Nathan Zimmer
2013-08-02 17:44 ` [RFC v2 3/5] Move page initialization into a separate function Nathan Zimmer
2013-08-02 17:44 ` [RFC v2 4/5] Only set page reserved in the memblock region Nathan Zimmer
2013-08-03 20:04 ` Nathan Zimmer
2013-08-02 17:44 ` [RFC v2 5/5] Sparse initialization of struct page array Nathan Zimmer
2013-08-05 9:58 ` [RFC v2 0/5] Transparent on-demand struct page initialization embedded in the buddy allocator Ingo Molnar
2013-08-12 21:54 ` [RFC v3 " Nathan Zimmer
2013-08-12 21:54 ` [RFC v3 1/5] memblock: Introduce a for_each_reserved_mem_region iterator Nathan Zimmer
2013-08-12 21:54 ` [RFC v3 2/5] Have __free_pages_memory() free in larger chunks Nathan Zimmer
2013-08-12 21:54 ` [RFC v3 3/5] Move page initialization into a separate function Nathan Zimmer
2013-08-12 21:54 ` [RFC v3 4/5] Only set page reserved in the memblock region Nathan Zimmer
2013-08-12 21:54 ` [RFC v3 5/5] Sparse initialization of struct page array Nathan Zimmer
2013-08-13 10:58 ` [RFC v3 0/5] Transparent on-demand struct page initialization embedded in the buddy allocator Ingo Molnar
2013-08-13 17:09 ` Linus Torvalds
2013-08-13 17:23 ` H. Peter Anvin
2013-08-13 17:33 ` Mike Travis
2013-08-13 17:51 ` Linus Torvalds
2013-08-13 18:04 ` Mike Travis
2013-08-13 19:06 ` Mike Travis [this message]
2013-08-13 20:24 ` Yinghai Lu
2013-08-13 20:37 ` Mike Travis
2013-08-13 21:35 ` Nathan Zimmer
2013-08-13 23:10 ` Nathan Zimmer
2013-08-13 23:55 ` Linus Torvalds
2013-08-14 11:27 ` Ingo Molnar
2013-08-14 11:05 ` Ingo Molnar
2013-08-14 22:15 ` Nathan Zimmer
2013-08-16 16:36 ` Dave Hansen
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