From: "Michal Nazarewicz" <mina86@mina86.com>
To: "Mel Gorman" <mel@csn.ul.ie>, "sandeep patil" <psandeep.s@gmail.com>
Cc: "Marek Szyprowski" <m.szyprowski@samsung.com>,
"Ohad Ben-Cohen" <ohad@wizery.com>,
"Daniel Walker" <dwalker@codeaurora.org>,
"Russell King" <linux@arm.linux.org.uk>,
"Arnd Bergmann" <arnd@arndb.de>,
"Jesse Barker" <jesse.barker@linaro.org>,
"Jonathan Corbet" <corbet@lwn.net>,
linux-kernel@vger.kernel.org,
"Dave Hansen" <dave@linux.vnet.ibm.com>,
linaro-mm-sig@lists.linaro.org, linux-mm@kvack.org,
"Kyungmin Park" <kyungmin.park@samsung.com>,
"KAMEZAWA Hiroyuki" <kamezawa.hiroyu@jp.fujitsu.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Rob Clark" <rob.clark@linaro.org>,
linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org
Subject: Re: [Linaro-mm-sig] [PATCH 11/15] mm: trigger page reclaim in alloc_contig_range() to stabilize watermarks
Date: Wed, 08 Feb 2012 10:21:18 +0100 [thread overview]
Message-ID: <op.v9cr9sqm3l0zgt@mpn-glaptop> (raw)
In-Reply-To: <CA+K6fF49BQiNer=7Di+gCU_EX4E41q-teXJJUBjEd2xc12-j4w@mail.gmail.com>
On Wed, 08 Feb 2012 03:04:18 +0100, sandeep patil <psandeep.s@gmail.com> wrote:
> There's another problem I am facing with zone watermarks and CMA.
>
> Test details:
> Memory : 480 MB of total memory, 128 MB CMA region
> Test case : around 600 MB of file transfer over USB RNDIS onto target
> System Load : ftpd with console running on target.
> No one is doing CMA allocations except for the DMA allocations done by the
> drivers.
>
> Result : After about 300MB transfer, I start getting GFP_ATOMIC
> allocation failures. This only happens if CMA region is reserved.
[...]
> Total memory available is way above the zone watermarks. So, we ended
> up starving
> UNMOVABLE/RECLAIMABLE atomic allocations that cannot fallback on CMA region.
This looks like something Mel warned me about. I don't really have a good
solution for that yet. ;/
--
Best regards, _ _
.o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o
..o | Computer Science, Michał “mina86” Nazarewicz (o o)
ooo +----<email/xmpp: mpn@google.com>--------------ooO--(_)--Ooo--
next prev parent reply other threads:[~2012-02-08 9:21 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-03 12:18 [PATCHv20 00/15] Contiguous Memory Allocator Marek Szyprowski
2012-02-03 12:18 ` [PATCH 01/15] mm: page_alloc: remove trailing whitespace Marek Szyprowski
2012-02-03 12:18 ` [PATCH 02/15] mm: compaction: introduce isolate_migratepages_range() Marek Szyprowski
2012-02-03 12:18 ` [PATCH 03/15] mm: compaction: introduce map_pages() Marek Szyprowski
2012-02-03 13:30 ` Mel Gorman
2012-02-03 12:18 ` [PATCH 04/15] mm: compaction: introduce isolate_freepages_range() Marek Szyprowski
2012-02-03 12:18 ` [PATCH 05/15] mm: compaction: export some of the functions Marek Szyprowski
2012-02-05 7:40 ` Hillf Danton
2012-02-05 14:34 ` Michal Nazarewicz
2012-02-06 12:46 ` Hillf Danton
2012-02-03 12:18 ` [PATCH 06/15] mm: page_alloc: introduce alloc_contig_range() Marek Szyprowski
2012-02-03 12:18 ` [PATCH 07/15] mm: page_alloc: change fallbacks array handling Marek Szyprowski
2012-02-03 12:18 ` [PATCH 08/15] mm: mmzone: MIGRATE_CMA migration type added Marek Szyprowski
2012-02-03 13:53 ` Mel Gorman
2012-02-03 14:19 ` Hillf Danton
2012-02-03 15:50 ` Michal Nazarewicz
2012-02-04 9:09 ` Hillf Danton
2012-02-05 14:37 ` Michal Nazarewicz
2012-02-03 12:18 ` [PATCH 09/15] mm: page_isolation: MIGRATE_CMA isolation functions added Marek Szyprowski
2012-02-03 12:18 ` [PATCH 10/15] mm: extract reclaim code from __alloc_pages_direct_reclaim() Marek Szyprowski
2012-02-03 12:18 ` [PATCH 11/15] mm: trigger page reclaim in alloc_contig_range() to stabilize watermarks Marek Szyprowski
2012-02-03 14:04 ` Mel Gorman
2012-02-08 2:04 ` [Linaro-mm-sig] " sandeep patil
2012-02-08 9:21 ` Michal Nazarewicz [this message]
2012-02-08 19:26 ` sandeep patil
2012-02-08 15:14 ` Marek Szyprowski
2012-02-10 11:19 ` Mel Gorman
2012-02-10 15:36 ` Marek Szyprowski
2012-02-03 12:18 ` [PATCH 12/15] drivers: add Contiguous Memory Allocator Marek Szyprowski
2012-02-05 4:25 ` Hillf Danton
2012-02-05 14:33 ` Michal Nazarewicz
2012-02-06 12:51 ` Hillf Danton
2012-02-03 12:18 ` [PATCH 13/15] X86: integrate CMA with DMA-mapping subsystem Marek Szyprowski
2012-02-03 12:18 ` [PATCH 14/15] ARM: " Marek Szyprowski
2012-02-03 12:18 ` [PATCH 15/15] ARM: Samsung: use CMA for 2 memory banks for s5p-mfc device Marek Szyprowski
2012-02-03 14:09 ` [PATCHv20 00/15] Contiguous Memory Allocator Mel Gorman
2012-02-07 9:06 ` Contiguous Memory Allocator on HIGHMEM cp.zou
2012-02-07 9:48 ` Marek Szyprowski
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