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 F0FD373189; Tue, 26 Mar 2024 23:03:12 +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=1711494193; cv=none; b=OditIgr5UEDrusKWrRo76H7HLs60EiR4E++BBmCPMOHGWhGN4iMfv2JXGXbGVV7kpgz9BPqWfidzqX9iR2GeFZq+0qA4YNkm29Wa3661u+PoDVacEtAIuQIjTk5MaxWlPtcmjv7Y1K8H0zMukizA1Qsbf3kh/oF7kDZvUYXvZ30= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711494193; c=relaxed/simple; bh=y8X4CghROntNwx0hRkVczdZ/8zLwN37++zC1IctRuYA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=EhmkeTir13emHZXlH69r+X//rX60egMw9/ine93OmkiUButpHXWSjoGfS6oXb6F9S9G3x9TKLdRNp4+uvKlgcFpmrtMlvXIXbMKRA8nbeoek7rmOqj4FoROh27foNRH1YjFF1hIEE3Kxn7Iq/OyiD38Qwc0yc1DEviVrYq2CVUs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PRczeLk5; 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="PRczeLk5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 00AD0C433F1; Tue, 26 Mar 2024 23:03:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711494192; bh=y8X4CghROntNwx0hRkVczdZ/8zLwN37++zC1IctRuYA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PRczeLk5OZ3BfuojZQxwA+5eVan09Z5hQoK1oU4ySRx0TU+IStqtoeyZUDspMapc0 IpRJMQC1IRySBQIRtFaQAwGI0aAQDzdflzYf4q66fgYI+xpoRjcjBygpfpuSKUfqDQ yNqDLPpU+q34TlbIg9feAYuCShRSJXA6IcJYwP/MacU/rj30n3+ilmp+s7TKvr48wz XVSZT5JOfdgtJnLff7Yvgc+7FpuWgVMz81HlrDqXcqqahUTdxEnUKufHFYA++KH9Jd XM2NWQv9+Sz2xmNckN+sCD7uyfDO5RbGaD4T52lJ7o7KYdyeRkqx9MQjPo2YmvioU8 iM8aSKaB73J8w== From: SeongJae Park To: SeongJae Park Cc: Honggyu Kim , damon@lists.linux.dev, linux-mm@kvack.org, akpm@linux-foundation.org, apopple@nvidia.com, baolin.wang@linux.alibaba.com, dave.jiang@intel.com, hyeongtak.ji@sk.com, kernel_team@skhynix.com, linmiaohe@huawei.com, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, mathieu.desnoyers@efficios.com, mhiramat@kernel.org, rakie.kim@sk.com, rostedt@goodmis.org, surenb@google.com, yangx.jy@fujitsu.com, ying.huang@intel.com, ziy@nvidia.com, 42.hyeyoo@gmail.com Subject: Re: [RFC PATCH v2 0/7] DAMON based 2-tier memory management for CXL memory Date: Tue, 26 Mar 2024 16:03:09 -0700 Message-Id: <20240326230309.47079-1-sj@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240325225304.235736-1-sj@kernel.org> References: Precedence: bulk X-Mailing-List: damon@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Mon, 25 Mar 2024 15:53:03 -0700 SeongJae Park wrote: > On Mon, 25 Mar 2024 21:01:04 +0900 Honggyu Kim wrote: [...] > > On Fri, 22 Mar 2024 09:32:23 -0700 SeongJae Park wrote: > > > On Fri, 22 Mar 2024 18:02:23 +0900 Honggyu Kim wrote: [...] > > > > I would like to hear how you think about this. > > So, to summarize my humble opinion, > > 1. I like the idea of having two actions. But I'd like to use names other than > 'promote' and 'demote'. > 2. I still prefer having a filter for the page granularity access re-check. > [...] > > I will join the DAMON Beer/Coffee/Tea Chat tomorrow as scheduled so I > > can talk more about this issue. > > Looking forward to chatting with you :) We met and discussed about this topic in the chat series yesterday. Sharing the summary for keeping the open discussion. Honggyu thankfully accepted my humble suggestions on the last reply. Honggyu will post the third version of this patchset soon. The patchset will implement two new DAMOS actions, namely MIGRATE_HOT and MIGRATE_COLD. Those will migrate the DAMOS target regions to a user-specified NUMA node, but will have different prioritization score function. As name implies, they will prioritize more hot regions and cold regions, respectively. Honggyu, please feel free to fix if there is anything wrong or missed. And thanks to Honggyu again for patiently keeping this productive discussion and their awesome work. Thanks, SJ [...]