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[2003:cb:c707:5c00:e650:bcd7:e2a0:54fe]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-36b367d9576sm18990024f8f.31.2024.08.01.00.54.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 01 Aug 2024 00:54:20 -0700 (PDT) Message-ID: Date: Thu, 1 Aug 2024 09:54:19 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [linus:master] [mm] c0bff412e6: stress-ng.clone.ops_per_sec -2.9% regression To: "Yin, Fengwei" , kernel test robot , Peter Xu Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, Andrew Morton , Huacai Chen , Jason Gunthorpe , Matthew Wilcox , Nathan Chancellor , Ryan Roberts , WANG Xuerui , linux-mm@kvack.org, ying.huang@intel.com, feng.tang@intel.com References: <202407301049.5051dc19-oliver.sang@intel.com> <193e302c-4401-4756-a552-9f1e07ecedcf@redhat.com> <439265d8-e71e-41db-8a46-55366fdd334e@intel.com> <90477952-fde2-41d7-8ff4-2102c45e341d@redhat.com> <99a5e8b5-6040-4de7-a185-7a39c16ae0fa@intel.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam03 X-Rspam-User: X-Rspamd-Queue-Id: BFF4A1C000B X-Stat-Signature: dn5ki7zko5rmnrnry1zy5qfxb5w3gg5q X-HE-Tag: 1722498866-453727 X-HE-Meta: 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 TiEa8FhI ScvAgkO3UTf0TOIvvUb8CGE6dP6MzbPA7+K9Bppxjq3bcOv6ThSBWSLVYKh/v3TutyOGLNkWf06DGfQf/pvT/BmWkJZ/ugXFxpMDlBLPnRtjP3pZiRqIXvRjRop4akFxflbyZyNFkceAhLVdUnQSzJqNPKzbYGxmQ5VfkkIfdmV8FYlN+BvkFj230oWpJHFibd4aoAH/co28XC6mzBcyzvf9Y4vStgN5L7ybYk5f5X0+2zUuVEbvarVtqlq1Tg40Gg+4rLbzfVoYL/DmFVJ+K79KtmmJnN+bpayG382tLpkI68NzHPFOAyor/BwAZBz2WomzdxFiXCVWczZ69wwjoWL2Kj8htYjyB3sbdVSPdSOiruA+mYefn3e2pdhGlqRHrfXR92ngaaOtf1SIXvyQIA8UnlA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 01.08.24 09:44, Yin, Fengwei wrote: > Hi David, > > On 8/1/2024 2:49 PM, David Hildenbrand wrote: >> We now have to do a page_folio(page) and then test for hugetlb. >> >>     return folio_test_hugetlb(page_folio(page)); >> >> Nowadays, folio_test_hugetlb() will be faster than at c0bff412e6 times, >> so maybe at least part of the overhead is gone. > This is great. We will check the trend to know whether it's recovered > in some level. Oh, I think d99e3140a4d33e26066183ff727d8f02f56bec64 went upstream before c0bff412e67b781d761e330ff9578aa9ed2be79e, so at the time of c0bff412e6 we already should have had the faster check! -- Cheers, David / dhildenb