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From: Alex Shi <alex.shi@linux.alibaba.com>
To: Rong Chen <rong.a.chen@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	cgroups@vger.kernel.org, mgorman@techsingularity.net,
	tj@kernel.org, hughd@google.com, khlebnikov@yandex-team.ru,
	daniel.m.jordan@oracle.com, yang.shi@linux.alibaba.com,
	willy@infradead.org, hannes@cmpxchg.org, lkp@intel.com,
	Michal Hocko <mhocko@kernel.org>,
	Vladimir Davydov <vdavydov.dev@gmail.com>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH v9 07/20] mm/lru: introduce TestClearPageLRU
Date: Wed, 4 Mar 2020 17:37:31 +0800	[thread overview]
Message-ID: <60d253bb-33d0-4328-bfde-3b7c26435cde@linux.alibaba.com> (raw)
In-Reply-To: <20200304090301.GB5972@shao2-debian>



在 2020/3/4 下午5:03, Rong Chen 写道:
>> Hi Andrew,
>>
>> Thanks a lot for comments!
>> Yes, this patch is essential for all next.
>>
>> Consider the normal memory testing would focus on user page, that probabably with PageLRU. 
>>
>> Fengguang's vm-scalibicase-small-allocs which used a lots vm_area_struct slab, which may
>> got some impact. 0day/Cheng Rong is working on the test. In my roughly testing, it may drop 5% on my
>> 96threads/394GB machine.
>>
>> Thanks
>> Alex
> Hi,
> 
> We only tested one case and found a slight regression of vm-scalability.median from this patch set:
> 
> Test case: small allocs
> =========================================================================================
> compiler/cpufreq_governor/kconfig/rootfs/runtime/tbox_group/test/testcase/ucode:
>   gcc-7/performance/x86_64-rhel-7.6/debian-x86_64-20191114.cgz/300s/lkp-ivb-d02/small-allocs/vm-scalability/0x21

It's a very acceptable result!

Thanks a lot for so quick testing! I believe your results would be far more stable than me. :)

(My testing show quit different result in 2 reboot(1.3% or 6.6% drop). Maybe sth wrong for me in this case.)

Thanks for your report!
Alex


  reply	other threads:[~2020-03-04  9:37 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1583146830-169516-1-git-send-email-alex.shi@linux.alibaba.com>
2020-03-02 11:00 ` [PATCH v9 01/20] mm/vmscan: remove unnecessary lruvec adding Alex Shi
2020-03-02 11:00 ` [PATCH v9 02/20] mm/memcg: fold lock_page_lru into commit_charge Alex Shi
2020-03-02 11:00 ` [PATCH v9 03/20] mm/page_idle: no unlikely double check for idle page counting Alex Shi
2020-03-02 11:00 ` [PATCH v9 04/20] mm/thp: move lru_add_page_tail func to huge_memory.c Alex Shi
2020-03-04  7:47   ` Kirill A. Shutemov
2020-03-04  8:13     ` Alex Shi
2020-03-02 11:00 ` [PATCH v9 05/20] mm/thp: clean up lru_add_page_tail Alex Shi
2020-03-02 11:00 ` [PATCH v9 06/20] mm/thp: narrow lru locking Alex Shi
2020-03-04  8:02   ` Kirill A. Shutemov
2020-03-04  8:51     ` Alex Shi
2020-03-02 11:00 ` [PATCH v9 07/20] mm/lru: introduce TestClearPageLRU Alex Shi
2020-03-02 22:11   ` Andrew Morton
2020-03-03  4:11     ` Alex Shi
2020-03-04  0:46       ` Andrew Morton
2020-03-04  7:06         ` Alex Shi
2020-03-04  9:03           ` Rong Chen
2020-03-04  9:37             ` Alex Shi [this message]
2020-03-02 11:00 ` [PATCH v9 08/20] mm/lru: add page isolation precondition in __isolate_lru_page Alex Shi
2020-03-02 11:00 ` [PATCH v9 09/20] mm/mlock: ClearPageLRU before get lru lock in munlock page isolation Alex Shi
2020-03-02 11:00 ` [PATCH v9 10/20] mm/lru: take PageLRU first in moving page between lru lists Alex Shi
2020-03-02 11:00 ` [PATCH v9 11/20] mm/memcg: move SetPageLRU out of lru_lock in commit_charge Alex Shi
2020-03-02 11:00 ` [PATCH v9 12/20] mm/mlock: clean up __munlock_isolate_lru_page Alex Shi
2020-03-02 11:00 ` [PATCH v9 13/20] mm/lru: replace pgdat lru_lock with lruvec lock Alex Shi
2020-03-02 11:00 ` [PATCH v9 14/20] mm/lru: introduce the relock_page_lruvec function Alex Shi
2020-03-02 11:00 ` [PATCH v9 15/20] mm/mlock: optimize munlock_pagevec by relocking Alex Shi
2020-03-02 11:00 ` [PATCH v9 16/20] mm/swap: only change the lru_lock iff page's lruvec is different Alex Shi
2020-03-02 11:00 ` [PATCH v9 17/20] mm/pgdat: remove pgdat lru_lock Alex Shi
2020-03-02 11:00 ` [PATCH v9 18/20] mm/lru: revise the comments of lru_lock Alex Shi
2020-03-02 11:00 ` [PATCH v9 19/20] mm/lru: add debug checking for page memcg moving Alex Shi
2020-03-02 11:00 ` [PATCH v9 20/20] mm/memcg: add debug checking in lock_page_memcg Alex Shi
2020-03-04  3:13 ` [PATCH v9 02/20] mm/memcg: fold lock_page_lru into commit_charge Hillf Danton
2020-03-04  7:19   ` Alex Shi

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