From: Mel Gorman <mgorman@suse.de>
To: Zlatko Calusic <zcalusic@bitsync.net>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
Andrew Morton <akpm@linux-foundation.org>,
Dave Hansen <dave.hansen@intel.com>,
Rik van Riel <riel@redhat.com>, Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 0/7] Configurable fair allocation zone policy v2r6
Date: Tue, 17 Dec 2013 21:23:27 +0000 [thread overview]
Message-ID: <20131217212327.GL11295@suse.de> (raw)
In-Reply-To: <52B068B7.4070304@bitsync.net>
On Tue, Dec 17, 2013 at 04:07:35PM +0100, Zlatko Calusic wrote:
> On 13.12.2013 15:10, Mel Gorman wrote:
> >Kicked this another bit today. It's still a bit half-baked but it restores
> >the historical performance and leaves the door open at the end for playing
> >nice with distributing file pages between nodes. Finishing this series
> >depends on whether we are going to make the remote node behaviour of the
> >fair zone allocation policy configurable or redefine MPOL_LOCAL. I'm in
> >favour of the configurable option because the default can be redefined and
> >tested while giving users a "compat" mode if we discover the new default
> >behaviour sucks for some workload.
> >
>
> I'll start a 5-day test of this patchset in a few hours, unless you
> can send an updated one in the meantime. I intend to test it on a
> rather boring 4GB x86_64 machine that before Johannes' work had lots
> of trouble balancing zones. Would you recommend to use the default
> settings, i.e. don't mess with tunables at this point?
>
For me at least I would prefer you tested v3 of the series with the
default settings of not interleaving file-backed pages on remote nodes
by default. Johannes might request testing with that knob enabled if the
machine is NUMA although I doubt it is with 4G of RAM.
Thanks.
--
Mel Gorman
SUSE Labs
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next prev parent reply other threads:[~2013-12-17 21:23 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-13 14:10 [RFC PATCH 0/7] Configurable fair allocation zone policy v2r6 Mel Gorman
2013-12-13 14:10 ` [PATCH 1/7] mm: page_alloc: exclude unreclaimable allocations from zone fairness policy Mel Gorman
2013-12-13 15:45 ` Rik van Riel
2013-12-13 14:10 ` [PATCH 2/7] mm: page_alloc: Break out zone page aging distribution into its own helper Mel Gorman
2013-12-13 15:46 ` Rik van Riel
2013-12-16 20:16 ` Johannes Weiner
2013-12-13 14:10 ` [PATCH 3/7] mm: page_alloc: Use zone node IDs to approximate locality Mel Gorman
2013-12-16 13:20 ` Rik van Riel
2013-12-16 20:25 ` Johannes Weiner
2013-12-17 11:13 ` Mel Gorman
2013-12-17 15:38 ` Johannes Weiner
2013-12-17 16:08 ` Mel Gorman
2013-12-17 20:11 ` Johannes Weiner
2013-12-17 21:03 ` Mel Gorman
2013-12-17 22:31 ` Johannes Weiner
2013-12-13 14:10 ` [PATCH 4/7] mm: Annotate page cache allocations Mel Gorman
2013-12-16 15:20 ` Rik van Riel
2013-12-13 14:10 ` [PATCH 5/7] mm: page_alloc: Make zone distribution page aging policy configurable Mel Gorman
2013-12-16 19:25 ` Rik van Riel
2013-12-16 20:42 ` Johannes Weiner
2013-12-17 15:29 ` Mel Gorman
2013-12-17 15:54 ` Johannes Weiner
2013-12-17 16:14 ` Mel Gorman
2013-12-17 17:43 ` Johannes Weiner
2013-12-17 21:22 ` Mel Gorman
2013-12-17 22:57 ` Johannes Weiner
2013-12-17 23:24 ` Mel Gorman
2013-12-13 14:10 ` [PATCH 6/7] mm: page_alloc: Only account batch allocations requests that are eligible Mel Gorman
2013-12-16 20:52 ` Johannes Weiner
2013-12-17 11:20 ` Mel Gorman
2013-12-17 15:43 ` Johannes Weiner
2013-12-17 16:06 ` Mel Gorman
2013-12-13 14:10 ` [PATCH 7/7] mm: page_alloc: Default allow file pages to use remote nodes for fair allocation policy Mel Gorman
2013-12-13 17:04 ` Johannes Weiner
2013-12-13 19:20 ` Mel Gorman
2013-12-13 22:15 ` Johannes Weiner
2013-12-17 16:04 ` Mel Gorman
2013-12-16 19:26 ` Rik van Riel
2013-12-17 15:07 ` [RFC PATCH 0/7] Configurable fair allocation zone policy v2r6 Zlatko Calusic
2013-12-17 21:23 ` Mel Gorman [this message]
2013-12-21 16:03 ` Zlatko Calusic
2013-12-23 10:26 ` Mel Gorman
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