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From: David Rientjes <rientjes@google.com>
To: Pingfan Liu <kernelfans@gmail.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Michal Hocko <mhocko@suse.com>, Vlastimil Babka <vbabka@suse.cz>,
	Mike Rapoport <rppt@linux.vnet.ibm.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Jonathan Cameron <Jonathan.Cameron@huawei.com>
Subject: Re: [PATCH] mm/alloc: fallback to first node if the wanted node offline
Date: Wed, 5 Dec 2018 11:00:19 -0800 (PST)	[thread overview]
Message-ID: <alpine.DEB.2.21.1812051058440.240991@chino.kir.corp.google.com> (raw)
In-Reply-To: <CAFgQCTttgfuPJZHqGDSF5hLpLWDm2+_+UiyK+ScKgxs6qD-KCQ@mail.gmail.com>

On Wed, 5 Dec 2018, Pingfan Liu wrote:

> > > And rather than using first_online_node, would next_online_node() work?
> > >
> > What is the gain? Is it for memory pressure on node0?
> >
> Maybe I got your point now.  Do you try to give a cheap assumption on
> nearest neigh of this node?
> 

It's likely better than first_online_node, but probably going to be the 
same based on the node ids that you have reported since the nodemask will 
simply wrap around back to the first node.

  reply	other threads:[~2018-12-05 19:00 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-04  3:05 [PATCH] mm/alloc: fallback to first node if the wanted node offline Pingfan Liu
2018-12-04  3:53 ` David Rientjes
2018-12-04  7:16   ` Pingfan Liu
2018-12-05  5:49     ` Pingfan Liu
2018-12-05 19:00       ` David Rientjes [this message]
2018-12-04  6:54 ` Wei Yang
2018-12-04  7:20   ` Pingfan Liu
2018-12-04  8:34     ` Wei Yang
2018-12-04  8:52       ` Pingfan Liu
2018-12-04  9:09         ` Wei Yang
2018-12-05  5:50           ` Pingfan Liu
2018-12-04  7:22 ` Michal Hocko
2018-12-04  8:20   ` Pingfan Liu
2018-12-04  8:40     ` Wei Yang
2018-12-04  8:56       ` Pingfan Liu
2018-12-04  8:56     ` Michal Hocko
2018-12-04 14:42       ` Vlastimil Babka
2018-12-05  5:38       ` Pingfan Liu
2018-12-05  9:21         ` Michal Hocko
2018-12-05  9:29           ` Pingfan Liu
2018-12-05  9:40             ` Vlastimil Babka
2018-12-06  3:07               ` Pingfan Liu
2018-12-06  8:28                 ` Michal Hocko
2018-12-06 10:03                   ` Pingfan Liu
2018-12-06 10:44                     ` Pingfan Liu
2018-12-06 12:11                       ` Michal Hocko
2018-12-07  2:56                         ` Pingfan Liu
2018-12-07  7:53                           ` Michal Hocko
2018-12-07  9:40                             ` Pingfan Liu
2018-12-07 11:30                               ` Michal Hocko
2018-12-07 13:20                                 ` Pingfan Liu
2018-12-07 14:22                                   ` Michal Hocko
2018-12-07 14:27                                     ` Pingfan Liu
2018-12-07 14:50                                       ` Michal Hocko
2018-12-07 15:56                                       ` Michal Hocko
2018-12-10  4:00                                         ` Pingfan Liu
2018-12-10  7:57                                           ` Pingfan Liu
2018-12-10 12:37                                         ` Michal Hocko
2018-12-11  8:05                                           ` Pingfan Liu
2018-12-11  9:44                                             ` Michal Hocko
2018-12-12  8:33                                               ` Pingfan Liu
2018-12-12  8:31                                           ` Pingfan Liu
2018-12-12 11:53                                             ` Michal Hocko
2018-12-13  8:37                                               ` Pingfan Liu
2018-12-13  9:04                                                 ` Pingfan Liu
2018-12-17 13:29                                                   ` Michal Hocko
2018-12-20  7:19                                                     ` Pingfan Liu
2018-12-20  9:19                                                       ` Michal Hocko
2019-01-08 14:34                                                         ` Michal Hocko
2019-01-09  3:13                                                           ` Pingfan Liu
2019-01-11  3:12                                                           ` Pingfan Liu
2019-01-11  9:23                                                             ` Michal Hocko
2018-12-17 12:57                                                 ` Michal Hocko
2018-12-05  9:43             ` Michal Hocko
2018-12-06  3:34               ` Pingfan Liu
2018-12-06  7:23                 ` Michal Hocko

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