From: "Christoph Lameter (Ampere)" <cl@gentwo.org>
To: Shuah Khan <skhan@linuxfoundation.org>
Cc: Dev Jain <dev.jain@arm.com>,
akpm@linux-foundation.org, shuah@kernel.org, david@redhat.com,
willy@infradead.org, ryan.roberts@arm.com,
anshuman.khandual@arm.com, catalin.marinas@arm.com,
vbabka@suse.cz, mhocko@suse.com, apopple@nvidia.com,
osalvador@suse.de, baolin.wang@linux.alibaba.com,
dave.hansen@linux.intel.com, will@kernel.org, baohua@kernel.org,
ioworker0@gmail.com, gshan@redhat.com, mark.rutland@arm.com,
kirill.shutemov@linux.intel.com, hughd@google.com,
aneesh.kumar@kernel.org, yang@os.amperecomputing.com,
peterx@redhat.com, broonie@kernel.org,
mgorman@techsingularity.net,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH 2/2] selftests/mm: Do not fail test for a single migration failure
Date: Fri, 9 Aug 2024 14:10:14 -0700 (PDT) [thread overview]
Message-ID: <aead8fc9-c60a-9ac6-280e-b2b9de85727c@gentwo.org> (raw)
In-Reply-To: <e3bf3d2b-eb19-4678-916e-7a7f572b2936@linuxfoundation.org>
On Fri, 9 Aug 2024, Shuah Khan wrote:
> "Given that migration is a best-effort service, it is wrong to fail the
> test for just a single failure; hence, fail the test after 100 consecutive
> failures (where 100 is still a subjective choice)."
>
> You do want to mention the above here.
>
> The reason being, I would like to know what this does to the run-time of
> this test if migration fails and retried 100 times.
If we backoff earlier without engaging too much with the page then we can
in turn affort to retry more times.
next prev parent reply other threads:[~2024-08-09 21:33 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-09 10:31 [PATCH 0/2] Improve migration by backing off earlier Dev Jain
2024-08-09 10:31 ` [PATCH 1/2] mm: Retry migration earlier upon refcount mismatch Dev Jain
2024-08-09 13:47 ` David Hildenbrand
2024-08-09 21:09 ` Christoph Lameter (Ampere)
2024-08-10 18:42 ` Dev Jain
2024-08-10 18:52 ` David Hildenbrand
2024-08-11 6:06 ` Dev Jain
2024-08-11 9:08 ` David Hildenbrand
2024-08-12 5:35 ` Dev Jain
2024-08-12 9:30 ` David Hildenbrand
2024-08-10 21:05 ` Zi Yan
2024-08-12 5:34 ` Huang, Ying
2024-08-12 6:01 ` Dev Jain
2024-08-12 6:15 ` Huang, Ying
2024-08-12 6:52 ` Dev Jain
2024-08-12 7:31 ` Huang, Ying
2024-08-12 12:08 ` Dev Jain
2024-08-13 5:00 ` Dev Jain
2024-08-13 7:22 ` Dev Jain
2024-08-16 11:31 ` Dev Jain
2024-08-19 6:58 ` Huang, Ying
2024-08-20 7:16 ` Dev Jain
2024-09-02 6:42 ` Huang, Ying
2024-08-12 6:13 ` Dev Jain
2024-08-12 6:20 ` Huang, Ying
2024-08-12 6:32 ` Dev Jain
2024-08-09 10:31 ` [PATCH 2/2] selftests/mm: Do not fail test for a single migration failure Dev Jain
2024-08-09 17:13 ` Shuah Khan
2024-08-09 21:10 ` Christoph Lameter (Ampere) [this message]
2024-08-12 6:19 ` Dev Jain
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