From: Dave Hansen <dave.hansen@intel.com>
To: Abhishek Goel <huntbag@linux.vnet.ibm.com>,
Dave Hansen <dave.hansen@linux.intel.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Zi Yan <ziy@nvidia.com>, David Hildenbrand <david@redhat.com>,
Yang Shi <yang.shi@linux.alibaba.com>,
Huang Ying <ying.huang@intel.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH -V11 2/9] mm/migrate: update node demotion order on hotplug events
Date: Wed, 23 Feb 2022 16:05:59 -0800 [thread overview]
Message-ID: <f5edb9dc-8b25-47c2-9905-09e88e41861b@intel.com> (raw)
In-Reply-To: <eb438ddd-2919-73d4-bd9f-b7eecdd9577a@linux.vnet.ibm.com>
On 2/23/22 15:02, Abhishek Goel wrote:
> If needed, I will provide experiment results and traces that were used
> to conclude this.
It would be great if you can provide some more info. Even just a CPU
time profile would be helpful.
It would also be great to understand more about what "hotplug on power
systems" actually means. Is this a synthetic benchmark, or are actual
end-users running into this issue? Are entire nodes of CPUs going
offline? Or is this just doing an offline/online of CPU 22 in a 100-CPU
NUMA node?
next prev parent reply other threads:[~2022-02-24 0:06 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-21 6:39 [PATCH -V11 1/9] mm/numa: automatically generate node migration order Huang Ying
2021-07-21 6:39 ` [PATCH -V11 2/9] mm/migrate: update node demotion order on hotplug events Huang Ying
2022-02-23 23:02 ` Abhishek Goel
2022-02-24 0:05 ` Dave Hansen [this message]
2022-02-24 23:37 ` Abhishek Goel
2022-02-25 0:49 ` Dave Hansen
2022-02-25 2:32 ` Huang, Ying
2022-02-25 20:35 ` Abhishek Goel
2022-03-08 10:27 ` Oscar Salvador
2022-03-08 17:07 ` Dave Hansen
2022-03-08 18:56 ` Oscar Salvador
2022-03-09 0:29 ` Huang, Ying
2021-07-21 6:39 ` [PATCH -V11 3/9] mm/migrate: enable returning precise migrate_pages() success count Huang Ying
2021-07-21 6:39 ` [PATCH -V11 4/9] mm/migrate: demote pages during reclaim Huang Ying
2021-07-21 21:11 ` Zi Yan
2021-07-21 6:39 ` [PATCH -V11 5/9] mm/vmscan: add page demotion counter Huang Ying
2021-07-21 21:13 ` Zi Yan
2021-07-21 6:39 ` [PATCH -V11 6/9] mm/vmscan: add helper for querying ability to age anonymous pages Huang Ying
2021-07-21 21:15 ` Zi Yan
2021-07-21 6:39 ` [PATCH -V11 7/9] mm/vmscan: Consider anonymous pages without swap Huang Ying
2021-07-21 21:21 ` Zi Yan
2021-07-21 6:39 ` [PATCH -V11 8/9] mm/vmscan: never demote for memcg reclaim Huang Ying
2021-07-21 21:38 ` Zi Yan
2021-07-21 21:58 ` Dave Hansen
2021-07-21 21:59 ` Zi Yan
2021-07-21 22:03 ` Yang Shi
2021-07-21 22:03 ` Yang Shi
2021-07-21 6:39 ` [PATCH -V11 9/9] mm/migrate: add sysfs interface to enable reclaim migration Huang Ying
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