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From: Wenchao Hao <haowenchao22@gmail.com>
To: Barry Song <21cnbao@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>,
	Andrew Morton <akpm@linux-foundation.org>,
	David Hildenbrand <david@redhat.com>,
	Ryan Roberts <ryan.roberts@arm.com>,
	Baolin Wang <baolin.wang@linux.alibaba.com>,
	Usama Arif <usamaarif642@gmail.com>,
	Lance Yang <ioworker0@gmail.com>,
	Matthew Wilcox <willy@infradead.org>,
	Peter Xu <peterx@redhat.com>,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org
Subject: Re: [PATCH] mm: add per-order mTHP swap-in fallback counters
Date: Fri, 22 Nov 2024 10:25:07 +0800	[thread overview]
Message-ID: <2c641b7a-4114-4cc1-b87b-052e973b33bb@gmail.com> (raw)
In-Reply-To: <CAGsJ_4yA-jaeUG-4i7eWwnrv1=P7ujivYq37btOFg8LwnhQAmw@mail.gmail.com>

On 2024/11/22 06:32, Barry Song wrote:
> On Fri, Nov 22, 2024 at 5:28 AM Wenchao Hao <haowenchao22@gmail.com> wrote:
>>
>> Now large folio swap-in is supported, but we do not have a method
>> to analyze the success ratio of large folio swap-ins. Similar to
>> anon_fault_fallback, we add a per-order mTHP swpin_fallback to help
>> calculate the success ratio. The new counter is located at:
>>
>> /sys/kernel/mm/transparent_hugepage/hugepages-<size>/stats/swpin_fallback
> 
> Well,  this could be useful for profiling, but why not also add
> MTHP_STAT_SWPIN_FALLBACK_CHARGE ?
> 

Hi, since my current testing scenario does not involve
MTHP_STAT_SWPIN_FALLBACK_CHARGE, I will soon resend a V2 version
to add it.

Thanks.

      reply	other threads:[~2024-11-22  2:25 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-11-21 16:27 Wenchao Hao
2024-11-21 22:32 ` Barry Song
2024-11-22  2:25   ` Wenchao Hao [this message]

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