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b=S0yAr08UViSRm2TYvimSu0pT2PUTswB7jZHWxAVTH2aGoZKOA5MLddB2to0FjYK7h UeV7+4VuvgrXi2LXqIQeT45FD7WpLHBP7tyOxUJUxBBvMHo8jqR9P+GvkeK5AKUCxJ ts/eDEpSuy/TdvX+a7BxJL53TjlShuDPj7v/pyjXe4I9MCn3jUzvO5zMpXadsSYe0g c/UZKQ5GicYWhNI6MdCiEeg6m/o00+tZQgdvIwXf5kFY5vZZTnA81d8CwBSRbj7C58 0crIq7DUnL0fdgfNy7Id3/27v6B/7Oi3Elx7EAkbxnARbTnNcSWry6fyrPeU3ZbM/x 4rpucJ+0EA62w== Message-ID: <918239a4-a759-409e-a9c7-1d8d11912f56@kernel.org> Date: Mon, 13 Apr 2026 14:11:52 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/3] slab: support memoryless nodes with sheaves Content-Language: en-US To: Jon Hunter , Ming Lei Cc: Harry Yoo , Hao Li , Andrew Morton , Christoph Lameter , David Rientjes , Roman Gushchin , linux-mm@kvack.org, linux-kernel@vger.kernel.org, "linux-tegra@vger.kernel.org" References: <20260311-b4-slab-memoryless-barns-v1-0-70ab850be4ce@kernel.org> <8ab58ecb-1fc1-42a1-b67a-c3107de2ece4@kernel.org> From: "Vlastimil Babka (SUSE)" In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: 47A6440003 X-Stat-Signature: wk6qm9c5xq61hz45rn5j6bw8uc1cpkcr X-Rspamd-Server: rspam06 X-HE-Tag: 1776082318-707960 X-HE-Meta: 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 1LYy85fS ix7ZEs81HyeRZEBGdoBF5A1cpGQBeFIvvWfpzmsbzWNsH4Y7ChzxZPZKezuolbsEzut7/pv0Z6A5phzt3YnuyYJCmnAeZZqN3IRi/xzeGz3Ezc5k77/MnWWharyHGacwBJP5MU2lP0ZHVuBFnIN40vGvFpTokWryCcGLMVuuz63fjm5QrNfDkyuNhp5SBoJbveIZSLzu0DaAyw2VFsABTaljT/P1Yrsoj0FsGwvLPUDvIrg0sRazAKgwzT1apruTJGYOeOENmsGgIjUO/2fgiLQCfNvGLx7G9ktsQTNVP4v2ro6w= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 4/8/26 15:04, Jon Hunter wrote: > Hi Vlastimil, > > On 11/03/2026 17:22, Vlastimil Babka (SUSE) wrote: > > > I have also observed a performance regresssion for Linux v7.0-rc for > some graphics related tests we run. I bisected to ... > > # first bad commit: [e47c897a29491ade20b27612fdd3107c39a07357] slab: add > sheaves to most caches > > I came across Ming's report and hence, found this series. I have also > tested the 3 patches in this series and it did appear to help with one > test, but overall I am still seeing a ~25% performance regression (the Hm with the numactl output you posted, such configuration shouldn't be affected by this series at all, so wonder if it's just noise. > tests are taking about 25% longer to run). I am not the owner or author > of these specific tests and I have not dived into see exactly what is > taking longer, but I just know they are taking longer to run. Are the tests available somewhere you can point us to? Thanks, Vlastimil > Anyway, I have not seen any recent updates on this, and so I am not sure > if there are any other updates or what the current status of this is? > > If there are any more patches available I will be happy to test. > > Thanks! > Jon >