From: Rik van Riel <riel@redhat.com>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
Dave Hansen <dave.hansen@intel.com>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 0/6] Configurable fair allocation zone policy v3
Date: Wed, 18 Dec 2013 08:47:45 -0500 [thread overview]
Message-ID: <52B1A781.50002@redhat.com> (raw)
In-Reply-To: <20131218061750.GK21724@cmpxchg.org>
On 12/18/2013 01:17 AM, Johannes Weiner wrote:
> Updated version with your tmpfs __GFP_PAGECACHE parts added and
> documentation, changelog updated as necessary. I remain unconvinced
> that tmpfs pages should be round-robined, but I agree with you that it
> is the conservative change to do for 3.12 and 3.12 and we can figure
> out the rest later. I sure hope that this doesn't drive most people
> on NUMA to disable pagecache interleaving right away as I expect most
> tmpfs workloads to see little to no reclaim and prefer locality... :/
Actually, I suspect most tmpfs heavy workloads will be things like
databases with shared memory segments. Those tend to benefit from
having all of the system's memory bandwidth available. The worker
threads/processes tend to live all over the system, too...
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next prev parent reply other threads:[~2013-12-18 13:47 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-17 16:48 [RFC PATCH 0/6] Configurable fair allocation zone policy v3 Mel Gorman
2013-12-17 16:48 ` [PATCH 1/6] mm: page_alloc: exclude unreclaimable allocations from zone fairness policy Mel Gorman
2013-12-17 16:48 ` [PATCH 2/6] mm: page_alloc: Break out zone page aging distribution into its own helper Mel Gorman
2013-12-17 16:48 ` [PATCH 3/6] mm: page_alloc: Use zone node IDs to approximate locality Mel Gorman
2013-12-17 16:48 ` [PATCH 4/6] mm: Annotate page cache allocations Mel Gorman
2013-12-17 16:48 ` [PATCH 5/6] mm: page_alloc: Make zone distribution page aging policy configurable Mel Gorman
2013-12-17 16:48 ` [PATCH 6/6] mm: page_alloc: add vm.pagecache_interleave to control default mempolicy for page cache Mel Gorman
2013-12-17 20:02 ` [RFC PATCH 0/6] Configurable fair allocation zone policy v3 Johannes Weiner
2013-12-18 6:17 ` Johannes Weiner
2013-12-18 13:47 ` Rik van Riel [this message]
2013-12-18 14:17 ` Johannes Weiner
2013-12-18 15:00 ` Mel Gorman
2013-12-18 16:09 ` Mel Gorman
2013-12-18 19:48 ` Johannes Weiner
2013-12-19 11:20 ` Mel Gorman
2013-12-18 14:51 ` Michal Hocko
2013-12-18 15:18 ` Johannes Weiner
2013-12-18 16:20 ` Michal Hocko
2013-12-18 19:20 ` Johannes Weiner
2013-12-19 12:59 ` Michal Hocko
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