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Subject: Re: [failures] mm-vmscan-remove-unnecessary-lruvec-adding.patch
 removed from -mm tree
From:   Qian Cai <cai@lca.pw>
In-Reply-To: <7149d2fb-2ff2-d251-2ed1-b4e6d81748ee@linux.alibaba.com>
Date:   Fri, 6 Mar 2020 22:31:39 -0500
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>, aarcange@redhat.com,
        daniel.m.jordan@oracle.com, hannes@cmpxchg.org, hughd@google.com,
        khlebnikov@yandex-team.ru, kirill@shutemov.name,
        kravetz@us.ibm.com, mhocko@kernel.org, mm-commits@vger.kernel.org,
        tj@kernel.org, vdavydov.dev@gmail.com, willy@infradead.org,
        yang.shi@linux.alibaba.com
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Message-Id: <C10223BC-1156-43FB-B7D9-674076AFDE19@lca.pw>
References: <20200306025041.rERhvnYmB%akpm@linux-foundation.org>
 <211632B1-2D6F-4BFA-A5A0-3030339D3D2A@lca.pw>
 <b123f1d8-eab0-4689-9400-ba1f853728b7@linux.alibaba.com>
 <f37b9b6b-730b-09b0-dd6b-5acba53e71e6@linux.alibaba.com>
 <792CE873-A64B-4FA6-A258-A8B6B951E698@lca.pw>
 <7149d2fb-2ff2-d251-2ed1-b4e6d81748ee@linux.alibaba.com>
To:     Alex Shi <alex.shi@linux.alibaba.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk


> On Mar 6, 2020, at 10:26 PM, Alex Shi <alex.shi@linux.alibaba.com> =
wrote:
>=20
> =E5=9C=A8 2020/3/7 =E4=B8=8A=E5=8D=8810:27, Qian Cai =E5=86=99=E9=81=93:=

>>> Compare to this patch's change, the 'c8cba0cc2a80 mm/thp: narrow lru =
locking' is more
>>> likely bad. Maybe it's due to lru unlock was moved before =
ClearPageCompound() from
>>> before remap_page(head); guess this unlock should be move after =
ClearPageCompound or
>>> move back to origin place.
>> I can only confirmed that after reverted those 6 patches, I am no =
long be able to reproduce it.
>>=20
>=20
> Hi Qian,=20
>=20
> Thanks for response!
> Could you like just try to revert the patch: 'mm/thp: narrow lru =
locking'? or would you like to
> share me info of your tests and let me reproduce it? like kernel =
config, system ENV, machine type.
> I had run hundreds cycle of oom01, but akpm kernel(f2cbd107a99b) still =
survived.

https://raw.githubusercontent.com/cailca/linux-mm/master/x86.config

HPE ProLiant DL385 Gen10
AMD EPYC 7601 32-Core Processor
65536 MB memory, 400 GB disk space

Processors	128
Cores	64
Sockets	2

linux-next 20200306

>=20
> I got my ltp mm testing results, it run total 75 cases, failed 2, skip =
9 and others are success
> and kernel works well after test on yesterday's akmp head: =
f2cbd107a99b.
>=20
> Many Thanks for help!
> Alex
>=20
> =3D=3D=3D=3D=3D
>=20
> Test Start Time: Fri Mar  6 20:49:59 2020
> -----------------------------------------
> Testcase                                           Result     Exit =
Value
> --------                                           ------     =
----------
> mm01                                               PASS       0
> mm02                                               PASS       0
> mtest01                                            PASS       0
> mtest01w                                           PASS       0
> mtest05                                            PASS       0
> mtest06                                            PASS       0
> mtest06_2                                          PASS       0
> mtest06_3                                          PASS       0
> mem01                                              PASS       0
> mem02                                              PASS       0
> mem03                                              PASS       0
> page01                                             PASS       0
> page02                                             PASS       0
> data_space                                         PASS       0
> stack_space                                        PASS       0
> shmt02                                             PASS       0
> shmt03                                             PASS       0
> shmt04                                             PASS       0
> shmt05                                             PASS       0
> shmt06                                             PASS       0
> shmt07                                             PASS       0
> shmt08                                             PASS       0
> shmt09                                             PASS       0
> shmt10                                             PASS       0
> shm_test01                                         PASS       0
> mallocstress01                                     PASS       0
> mmapstress01                                       PASS       0
> mmapstress02                                       PASS       0
> mmapstress03                                       PASS       0
> mmapstress04                                       PASS       0
> mmapstress05                                       PASS       0
> mmapstress06                                       PASS       0
> mmapstress07                                       PASS       0
> mmapstress08                                       PASS       0
> mmapstress09                                       PASS       0
> mmapstress10                                       PASS       0
> mmap10                                             PASS       0
> mmap10_1                                           PASS       0
> mmap10_2                                           PASS       0
> mmap10_3                                           PASS       0
> mmap10_4                                           PASS       0
> ksm01                                              FAIL       2
> ksm01_1                                            FAIL       1
> ksm02                                              CONF       32
> ksm02_1                                            CONF       32
> ksm03                                              PASS       0
> ksm03_1                                            PASS       0
> ksm04                                              CONF       32
> ksm04_1                                            CONF       32
> ksm05                                              PASS       0
> ksm06                                              CONF       32
> ksm06_1                                            CONF       32
> ksm06_2                                            CONF       32
> oom01                                              PASS       0
> oom02                                              CONF       32
> oom03                                              PASS       0
> oom04                                              PASS       0
> oom05                                              PASS       0
> swapping01                                         PASS       0
> thp01                                              PASS       0
> thp02                                              PASS       0
> thp03                                              PASS       0
> vma01                                              PASS       0
> vma02                                              PASS       0
> vma03                                              CONF       32
> vma04                                              PASS       0
> vma05                                              PASS       0
> overcommit_memory01                                PASS       0
> overcommit_memory02                                PASS       0
> overcommit_memory03                                PASS       0
> overcommit_memory04                                PASS       0
> overcommit_memory05                                PASS       0
> overcommit_memory06                                PASS       0
> max_map_count                                      PASS       0
> min_free_kbytes                                    PASS       0
>=20
> -----------------------------------------------
> Total Tests: 75
> Total Skipped Tests: 9
> Total Failures: 2
> Kernel Version: 5.6.0-rc4-06724-gf2cbd107a99b
> Machine Architecture: x86_64
> Hostname: alexshi-test
>=20