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From: Daniel Byrne <djbyrne@mtu.edu>
To: Sofia Trinh <sofia.trinh@edi.works>
Cc: "Yu Zhao" <yuzhao@google.com>,
	"Alexandre Frade" <kernel@xanmod.org>,
	"Brian Geffon" <bgeffon@google.com>,
	"Daniel Byrne" <djbyrne@mtu.edu>,
	"Holger Hoffstätte" <holger@applied-asynchrony.com>,
	"Jan Alexander Steffens" <heftig@archlinux.org>,
	"Shuang Zhai" <szhai2@cs.rochester.edu>,
	"Steven Barrett" <steven@liquorix.net>,
	"Suleiman Souhlal" <suleiman@google.com>,
	"Andi Kleen" <ak@linux.intel.com>,
	"Catalin Marinas" <catalin.marinas@arm.com>,
	"Dave Hansen" <dave.hansen@linux.intel.com>,
	"Hillf Danton" <hdanton@sina.com>, "Jens Axboe" <axboe@kernel.dk>,
	"Jesse Barnes" <jsbarnes@google.com>,
	"Johannes Weiner" <hannes@cmpxchg.org>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Matthew Wilcox" <willy@infradead.org>,
	"Mel Gorman" <mgorman@suse.de>,
	"Michael Larabel" <Michael@michaellarabel.com>,
	"Michal Hocko" <mhocko@kernel.org>,
	"Rik van Riel" <riel@surriel.com>,
	"Vlastimil Babka" <vbabka@suse.cz>,
	"Will Deacon" <will@kernel.org>,
	"Ying Huang" <ying.huang@intel.com>,
	linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	page-reclaim@google.com, x86@kernel.org,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Linus Torvalds" <torvalds@linux-foundation.org>
Subject: Re: [PATCH v6 0/9] Multigenerational LRU Framework
Date: Wed, 12 Jan 2022 11:17:50 -0500	[thread overview]
Message-ID: <CA+4-3vksGvKd18FgRinxhqHetBS1hQekJE2gwco8Ja-bJWKtFw@mail.gmail.com> (raw)
In-Reply-To: <CAMwLHrZi0ZGFsuc74Yj3DErT1zyG2DEudS3ZgPEsexj0XfZJyA@mail.gmail.com>

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Tested-by: Daniel Byrne <djbyrne@mtu.edu> with memcached allocating ~100GB
of byte-addressable Optante, performance improvement in terms of throughput
(measured as queries per second) was about 10% for a series of workloads.

On Wed, Jan 12, 2022 at 1:07 AM Sofia Trinh <sofia.trinh@edi.works> wrote:

> On Tue, Jan 11, 2022 at 12:41 AM Yu Zhao <yuzhao@google.com> wrote:
> >
> > On Tue, Jan 04, 2022 at 01:30:00PM -0700, Yu Zhao wrote:
> > > On Tue, Jan 04, 2022 at 01:22:19PM -0700, Yu Zhao wrote:
> > > > TLDR
> > > > ====
> > > > The current page reclaim is too expensive in terms of CPU usage and
> it
> > > > often makes poor choices about what to evict. This patchset offers an
> > > > alternative solution that is performant, versatile and
> > > > straightforward.
> > >
> > > <snipped>
> > >
> > > > Summery
> > > > =======
> > > > The facts are:
> > > > 1. The independent lab results and the real-world applications
> > > >    indicate substantial improvements; there are no known regressions.
> > > > 2. Thrashing prevention, working set estimation and proactive reclaim
> > > >    work out of the box; there are no equivalent solutions.
> > > > 3. There is a lot of new code; nobody has demonstrated smaller
> changes
> > > >    with similar effects.
> > > >
> > > > Our options, accordingly, are:
> > > > 1. Given the amount of evidence, the reported improvements will
> likely
> > > >    materialize for a wide range of workloads.
> > > > 2. Gauging the interest from the past discussions [14][15][16], the
> > > >    new features will likely be put to use for both personal computers
> > > >    and data centers.
> > > > 3. Based on Google's track record, the new code will likely be well
> > > >    maintained in the long term. It'd be more difficult if not
> > > >    impossible to achieve similar effects on top of the existing
> > > >    design.
> > >
> > > Hi Andrew, Linus,
> > >
> > > Can you please take a look at this patchset and let me know if it's
> > > 5.17 material?
> > >
> > > My goal is to get it merged asap so that users can reap the benefits
> > > and I can push the sequels. Please examine the data provided -- I
> > > think the unprecedented coverage and the magnitude of the improvements
> > > warrant a green light.
> >
> > Downstream kernel maintainers who have been carrying MGLRU for more than
> > 3 versions, can you please provide your Acked-by tags?
> >
> > Having this patchset in the mainline will make your job easier :)
> >
> >    Alexandre - the XanMod Kernel maintainer
> >                https://xanmod.org
> >
> >    Brian     - the Chrome OS kernel memory maintainer
> >                https://www.chromium.org
> >
> >    Jan       - the Arch Linux Zen kernel maintainer
> >                https://archlinux.org
> >
> >    Steven    - the Liquorix kernel maintainer
> >                https://liquorix.net
> >
> >    Suleiman  - the ARCVM (Android downstream) kernel memory maintainer
> >
> https://chromium.googlesource.com/chromiumos/third_party/kernel
> >
> > Also my gratitude to those who have helped test MGLRU:
> >
> >    Daniel - researcher at Michigan Tech
> >             benchmarked memcached
> >
> >    Holger - who has been testing/patching/contributing to various
> >             subsystems since ~2008
> >
> >    Shuang - researcher at University of Rochester
> >             benchmarked fio and provided a report
> >
> >    Sofia  - EDI https://www.edi.works
> >             benchmarked the top eight memory hogs and provided reports
>
> Tested-by: Sofia Trinh <sofia.trinh@edi.works>
>


-- 
Daniel Byrne

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  reply	other threads:[~2022-01-12 16:18 UTC|newest]

Thread overview: 223+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-04 20:22 [PATCH v6 0/9] Multigenerational LRU Framework Yu Zhao
2022-01-04 20:22 ` Yu Zhao
2022-01-04 20:22 ` [PATCH v6 1/9] mm: x86, arm64: add arch_has_hw_pte_young() Yu Zhao
2022-01-04 20:22   ` Yu Zhao
2022-01-05 10:45   ` Will Deacon
2022-01-05 10:45     ` Will Deacon
2022-01-05 20:47     ` Yu Zhao
2022-01-05 20:47       ` Yu Zhao
2022-01-06 10:30       ` Will Deacon
2022-01-06 10:30         ` Will Deacon
2022-01-07  7:25         ` Yu Zhao
2022-01-07  7:25           ` Yu Zhao
2022-01-11 14:19           ` Will Deacon
2022-01-11 14:19             ` Will Deacon
2022-01-11 22:27             ` Yu Zhao
2022-01-11 22:27               ` Yu Zhao
2022-01-04 20:22 ` [PATCH v6 2/9] mm: x86: add CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG Yu Zhao
2022-01-04 20:22   ` Yu Zhao
2022-01-04 21:24   ` Linus Torvalds
2022-01-04 21:24     ` Linus Torvalds
2022-01-04 20:22 ` [PATCH v6 3/9] mm/vmscan.c: refactor shrink_node() Yu Zhao
2022-01-04 20:22   ` Yu Zhao
2022-01-04 20:22 ` [PATCH v6 4/9] mm: multigenerational lru: groundwork Yu Zhao
2022-01-04 20:22   ` Yu Zhao
2022-01-04 21:34   ` Linus Torvalds
2022-01-04 21:34     ` Linus Torvalds
2022-01-11  8:16   ` Aneesh Kumar K.V
2022-01-11  8:16     ` Aneesh Kumar K.V
2022-01-12  2:16     ` Yu Zhao
2022-01-12  2:16       ` Yu Zhao
2022-01-04 20:22 ` [PATCH v6 5/9] mm: multigenerational lru: mm_struct list Yu Zhao
2022-01-04 20:22   ` Yu Zhao
2022-01-07  9:06   ` Michal Hocko
2022-01-07  9:06     ` Michal Hocko
2022-01-08  0:19     ` Yu Zhao
2022-01-08  0:19       ` Yu Zhao
2022-01-10 15:21       ` Michal Hocko
2022-01-10 15:21         ` Michal Hocko
2022-01-12  8:08         ` Yu Zhao
2022-01-12  8:08           ` Yu Zhao
2022-01-04 20:22 ` [PATCH v6 6/9] mm: multigenerational lru: aging Yu Zhao
2022-01-04 20:22   ` Yu Zhao
2022-01-06 16:06   ` Michal Hocko
2022-01-06 16:06     ` Michal Hocko
2022-01-06 21:27     ` Yu Zhao
2022-01-06 21:27       ` Yu Zhao
2022-01-07  8:43       ` Michal Hocko
2022-01-07  8:43         ` Michal Hocko
2022-01-07 21:12         ` Yu Zhao
2022-01-07 21:12           ` Yu Zhao
2022-01-06 16:12   ` Michal Hocko
2022-01-06 16:12     ` Michal Hocko
2022-01-06 21:41     ` Yu Zhao
2022-01-06 21:41       ` Yu Zhao
2022-01-07  8:55       ` Michal Hocko
2022-01-07  8:55         ` Michal Hocko
2022-01-07  9:00         ` Michal Hocko
2022-01-07  9:00           ` Michal Hocko
2022-01-10  3:58           ` Yu Zhao
2022-01-10  3:58             ` Yu Zhao
2022-01-10 14:37             ` Michal Hocko
2022-01-10 14:37               ` Michal Hocko
2022-01-13  9:43               ` Yu Zhao
2022-01-13  9:43                 ` Yu Zhao
2022-01-13 12:02                 ` Michal Hocko
2022-01-13 12:02                   ` Michal Hocko
2022-01-19  6:31                   ` Yu Zhao
2022-01-19  6:31                     ` Yu Zhao
2022-01-19  9:44                     ` Michal Hocko
2022-01-19  9:44                       ` Michal Hocko
2022-01-10 15:01     ` Michal Hocko
2022-01-10 15:01       ` Michal Hocko
2022-01-10 16:01       ` Vlastimil Babka
2022-01-10 16:01         ` Vlastimil Babka
2022-01-10 16:25         ` Michal Hocko
2022-01-10 16:25           ` Michal Hocko
2022-01-11 23:16       ` Yu Zhao
2022-01-11 23:16         ` Yu Zhao
2022-01-12 10:28         ` Michal Hocko
2022-01-12 10:28           ` Michal Hocko
2022-01-13  9:25           ` Yu Zhao
2022-01-13  9:25             ` Yu Zhao
2022-01-07 13:11   ` Michal Hocko
2022-01-07 13:11     ` Michal Hocko
2022-01-07 23:36     ` Yu Zhao
2022-01-07 23:36       ` Yu Zhao
2022-01-10 15:35       ` Michal Hocko
2022-01-10 15:35         ` Michal Hocko
2022-01-11  1:18         ` Yu Zhao
2022-01-11  1:18           ` Yu Zhao
2022-01-11  9:00           ` Michal Hocko
2022-01-11  9:00             ` Michal Hocko
     [not found]         ` <1641900108.61dd684cb0e59@mail.inbox.lv>
2022-01-11 12:15           ` Michal Hocko
2022-01-11 12:15             ` Michal Hocko
2022-01-13 17:00             ` Alexey Avramov
2022-01-13 17:00               ` Alexey Avramov
2022-01-11 14:22         ` Alexey Avramov
2022-01-11 14:22           ` Alexey Avramov
2022-01-07 14:44   ` Michal Hocko
2022-01-07 14:44     ` Michal Hocko
2022-01-10  4:47     ` Yu Zhao
2022-01-10  4:47       ` Yu Zhao
2022-01-10 10:54       ` Michal Hocko
2022-01-10 10:54         ` Michal Hocko
2022-01-19  7:04         ` Yu Zhao
2022-01-19  7:04           ` Yu Zhao
2022-01-19  9:42           ` Michal Hocko
2022-01-19  9:42             ` Michal Hocko
2022-01-23 21:28             ` Yu Zhao
2022-01-23 21:28               ` Yu Zhao
2022-01-24 14:01               ` Michal Hocko
2022-01-24 14:01                 ` Michal Hocko
2022-01-10 16:57   ` Michal Hocko
2022-01-10 16:57     ` Michal Hocko
2022-01-12  1:01     ` Yu Zhao
2022-01-12  1:01       ` Yu Zhao
2022-01-12 10:17       ` Michal Hocko
2022-01-12 10:17         ` Michal Hocko
2022-01-12 23:43         ` Yu Zhao
2022-01-12 23:43           ` Yu Zhao
2022-01-13 11:57           ` Michal Hocko
2022-01-13 11:57             ` Michal Hocko
2022-01-23 21:40             ` Yu Zhao
2022-01-23 21:40               ` Yu Zhao
2022-01-04 20:22 ` [PATCH v6 7/9] mm: multigenerational lru: eviction Yu Zhao
2022-01-04 20:22   ` Yu Zhao
2022-01-11 10:37   ` Aneesh Kumar K.V
2022-01-11 10:37     ` Aneesh Kumar K.V
2022-01-12  8:05     ` Yu Zhao
2022-01-12  8:05       ` Yu Zhao
2022-01-04 20:22 ` [PATCH v6 8/9] mm: multigenerational lru: user interface Yu Zhao
2022-01-04 20:22   ` Yu Zhao
2022-01-10 10:27   ` Mike Rapoport
2022-01-10 10:27     ` Mike Rapoport
2022-01-12  8:35     ` Yu Zhao
2022-01-12  8:35       ` Yu Zhao
2022-01-12 10:31       ` Michal Hocko
2022-01-12 10:31         ` Michal Hocko
2022-01-12 15:45       ` Mike Rapoport
2022-01-12 15:45         ` Mike Rapoport
2022-01-13  9:47         ` Yu Zhao
2022-01-13  9:47           ` Yu Zhao
2022-01-13 10:31   ` Aneesh Kumar K.V
2022-01-13 10:31     ` Aneesh Kumar K.V
2022-01-13 23:02     ` Yu Zhao
2022-01-13 23:02       ` Yu Zhao
2022-01-14  5:20       ` Aneesh Kumar K.V
2022-01-14  5:20         ` Aneesh Kumar K.V
2022-01-14  6:50         ` Yu Zhao
2022-01-14  6:50           ` Yu Zhao
2022-01-04 20:22 ` [PATCH v6 9/9] mm: multigenerational lru: Kconfig Yu Zhao
2022-01-04 20:22   ` Yu Zhao
2022-01-04 21:39   ` Linus Torvalds
2022-01-04 21:39     ` Linus Torvalds
2022-01-04 20:22 ` [PATCH v6 0/9] Multigenerational LRU Framework Yu Zhao
2022-01-04 20:30 ` Yu Zhao
2022-01-04 20:30   ` Yu Zhao
2022-01-04 21:43   ` Linus Torvalds
2022-01-04 21:43     ` Linus Torvalds
2022-01-05 21:12     ` Yu Zhao
2022-01-05 21:12       ` Yu Zhao
2022-01-07  9:38   ` Michal Hocko
2022-01-07  9:38     ` Michal Hocko
2022-01-07 18:45     ` Yu Zhao
2022-01-07 18:45       ` Yu Zhao
2022-01-10 15:39       ` Michal Hocko
2022-01-10 15:39         ` Michal Hocko
2022-01-10 22:04         ` Yu Zhao
2022-01-10 22:04           ` Yu Zhao
2022-01-10 22:46           ` Jesse Barnes
2022-01-10 22:46             ` Jesse Barnes
2022-01-11  1:41             ` Linus Torvalds
2022-01-11  1:41               ` Linus Torvalds
2022-01-11 10:40             ` Michal Hocko
2022-01-11 10:40               ` Michal Hocko
2022-01-11  8:41   ` Yu Zhao
2022-01-11  8:41     ` Yu Zhao
2022-01-11  8:53     ` Holger Hoffstätte
2022-01-11  8:53       ` Holger Hoffstätte
2022-01-11  9:26     ` Jan Alexander Steffens (heftig)
2022-01-11 16:04     ` Shuang Zhai
2022-01-11 16:04       ` Shuang Zhai
2022-01-12  1:46     ` Suleiman Souhlal
2022-01-12  1:46       ` Suleiman Souhlal
2022-01-12  6:07     ` Sofia Trinh
2022-01-12  6:07       ` Sofia Trinh
2022-01-12 16:17       ` Daniel Byrne [this message]
2022-01-18  9:21     ` Yu Zhao
2022-01-18  9:21       ` Yu Zhao
2022-01-18  9:36     ` Donald Carr
2022-01-18  9:36       ` Donald Carr
2022-01-19 20:19     ` Steven Barrett
2022-01-19 20:19       ` Steven Barrett
2022-01-19 22:25     ` Brian Geffon
2022-01-19 22:25       ` Brian Geffon
2022-01-05  2:44 ` Shuang Zhai
2022-01-05  2:44   ` Shuang Zhai
2022-01-05  8:55 ` SeongJae Park
2022-01-05  8:55   ` SeongJae Park
2022-01-05 10:53   ` Yu Zhao
2022-01-05 10:53     ` Yu Zhao
2022-01-05 11:12     ` Borislav Petkov
2022-01-05 11:12       ` Borislav Petkov
2022-01-05 11:25     ` SeongJae Park
2022-01-05 11:25       ` SeongJae Park
2022-01-05 21:06       ` Yu Zhao
2022-01-05 21:06         ` Yu Zhao
2022-01-10 14:49 ` Alexey Avramov
2022-01-10 14:49   ` Alexey Avramov
2022-01-11 10:24 ` Alexey Avramov
2022-01-11 10:24   ` Alexey Avramov
2022-01-12 20:56 ` Oleksandr Natalenko
2022-01-12 20:56   ` Oleksandr Natalenko
2022-01-13  8:59   ` Yu Zhao
2022-01-13  8:59     ` Yu Zhao
2022-01-23  5:43 ` Barry Song
2022-01-23  5:43   ` Barry Song
2022-01-25  6:48   ` Yu Zhao
2022-01-25  6:48     ` Yu Zhao
2022-01-28  8:54     ` Barry Song
2022-01-28  8:54       ` Barry Song
2022-02-08  9:16       ` Yu Zhao
2022-02-08  9:16         ` Yu Zhao

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