From: Michal Hocko <mhocko@kernel.org>
To: Pengfei Li <fly@kernel.page>
Cc: akpm@linux-foundation.org, mgorman@techsingularity.net,
vbabka@suse.cz, cl@linux.com, iamjoonsoo.kim@lge.com,
guro@fb.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [RFC v1 00/19] Modify zonelist to nodelist v1
Date: Mon, 25 Nov 2019 09:40:58 +0100 [thread overview]
Message-ID: <20191125084058.GD31714@dhcp22.suse.cz> (raw)
In-Reply-To: <20191122230543.2f106c80.fly@kernel.page>
On Fri 22-11-19 23:05:43, Pengfei Li wrote:
> On Thu, 21 Nov 2019 19:04:01 +0100
> Michal Hocko <mhocko@kernel.org> wrote:
>
> > On Thu 21-11-19 23:17:52, Pengfei Li wrote:
> > [...]
> > > Since I don't currently have multiple node NUMA systems, I would be
> > > grateful if anyone would like to test this series of patches.
> >
> > I didn't really get to think about the actual patchset. From a very
> > quick glance I am wondering whether we need to optimize as there are
> > usually only small amount of numa nodes. But I am quite busy so I
> > cannot really do any claims.
>
> Thanks for your comments.
>
> I think it's time to modify the zonelist to nodelist because the
> zonelist is always in node order and the page reclamation is based on
> node.
>
> I will do more performance testing to show that multi-node systems will
> benefit from this series of patches.
Sensible performance numbers on multiple workloads (ideally some real
world ones rather than artificial microbenchmarks) is essential for a
performance optimization that is this large.
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2019-11-25 8:41 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-21 15:17 [RFC v1 00/19] Modify zonelist to nodelist v1 Pengfei Li
2019-11-21 15:17 ` [RFC v1 01/19] mm, mmzone: modify zonelist to nodelist Pengfei Li
2019-11-21 15:17 ` [RFC v1 02/19] mm, hugetlb: use for_each_node in dequeue_huge_page_nodemask() Pengfei Li
2019-11-21 15:17 ` [RFC v1 03/19] mm, oom_kill: use for_each_node in constrained_alloc() Pengfei Li
2019-11-21 15:17 ` [RFC v1 04/19] mm, slub: use for_each_node in get_any_partial() Pengfei Li
2019-11-21 15:17 ` [RFC v1 05/19] mm, slab: use for_each_node in fallback_alloc() Pengfei Li
2019-11-21 15:17 ` [RFC v1 06/19] mm, vmscan: use for_each_node in do_try_to_free_pages() Pengfei Li
2019-11-21 15:17 ` [RFC v1 07/19] mm, vmscan: use first_node in throttle_direct_reclaim() Pengfei Li
2019-11-21 15:18 ` [RFC v1 08/19] mm, vmscan: pass pgdat to wakeup_kswapd() Pengfei Li
2019-11-21 15:18 ` [RFC v1 09/19] mm, vmscan: use for_each_node in shrink_zones() Pengfei Li
2019-11-21 15:18 ` [RFC v1 10/19] mm, page_alloc: use for_each_node in wake_all_kswapds() Pengfei Li
2019-11-21 15:18 ` [RFC v1 11/19] mm, mempolicy: use first_node in mempolicy_slab_node() Pengfei Li
2019-11-21 15:18 ` [RFC v1 12/19] mm, mempolicy: use first_node in mpol_misplaced() Pengfei Li
2019-11-21 15:18 ` [RFC v1 13/19] mm, page_alloc: use first_node in local_memory_node() Pengfei Li
2019-11-21 15:18 ` [RFC v1 14/19] mm, compaction: rename compaction_zonelist_suitable Pengfei Li
2019-11-21 15:18 ` [RFC v1 15/19] mm, mm_init: rename mminit_verify_zonelist Pengfei Li
2019-11-21 15:18 ` [RFC v1 16/19] mm, page_alloc: cleanup build_zonelists Pengfei Li
2019-11-21 15:18 ` [RFC v1 17/19] mm, memory_hotplug: cleanup online_pages() Pengfei Li
2019-11-21 15:18 ` [RFC v1 18/19] kernel, sysctl: cleanup numa_zonelist_order Pengfei Li
2019-11-21 15:18 ` [RFC v1 19/19] mm, mmzone: cleanup zonelist in comments Pengfei Li
2019-11-21 18:04 ` [RFC v1 00/19] Modify zonelist to nodelist v1 Michal Hocko
2019-11-22 15:05 ` Pengfei Li
2019-11-25 8:40 ` Michal Hocko [this message]
2019-11-25 14:46 ` Pengfei Li
2019-11-25 15:46 ` Michal Hocko
2019-11-22 10:03 ` David Hildenbrand
2019-11-22 15:49 ` Pengfei Li
2019-11-22 15:53 ` Christopher Lameter
2019-11-22 16:06 ` David Hildenbrand
2019-11-22 17:36 ` Pengfei Li
2019-11-22 18:24 ` Christopher Lameter
[not found] ` <2019112215245905276118@gmail.com>
2019-11-22 10:14 ` David Hildenbrand
2019-11-22 15:28 ` Pengfei Li
2019-11-22 15:53 ` Qian Cai
2019-11-25 8:39 ` Michal Hocko
2019-11-26 15:30 ` Qian Cai
2019-11-26 15:41 ` Michal Hocko
2019-11-26 19:04 ` Qian Cai
2019-11-27 8:50 ` Michal Hocko
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