From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 028EC3AC0E7; Mon, 13 Apr 2026 12:11:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776082317; cv=none; b=hZ4m+BaBKuG+3kESSyPTu5y7N39hmdiNZjv7djDupGaxoibsbUvQs8yTwMuTuxmAmc21485rMH4NK+ysESRDT+xSHbHpEVlrOmo8jQEdqi+eMPmJ/dX70hSWSsK1AoONAYEupBg6bGQ3S2kMgm1bG9K5P1UY3fhApDr+pj7n4zM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776082317; c=relaxed/simple; bh=cPdjbkwgMbN+VgL2rPaXpYq7s7kGzAbIz9UpEqUzzOo=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=SpRvqyzkQxef/XulO4jAPvRfIx/A/IpaF7JYGp/5esSsVUD9S2U1EZXZjruSO71yNBnEOmnZKp5F35L6uh+1rQxdlhT5iOEwnmlubSFlUelbGUyBhPuqtpNztqexwTcn3Bh6mQgiF/anmJ/0E+bo+OJt4cuxJmHdlkgTHzlBXgE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=S0yAr08U; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="S0yAr08U" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C43CDC116C6; Mon, 13 Apr 2026 12:11:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776082316; bh=cPdjbkwgMbN+VgL2rPaXpYq7s7kGzAbIz9UpEqUzzOo=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; 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 Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 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 >