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Date: Fri, 20 Feb 2026 09:45:01 +0100
From: Peter Zijlstra <peterz@infradead.org>
To: Qais Yousef <qyousef@layalina.io>
Cc: Tim Chen <tim.c.chen@linux.intel.com>, Ingo Molnar <mingo@redhat.com>,
	K Prateek Nayak <kprateek.nayak@amd.com>,
	"Gautham R . Shenoy" <gautham.shenoy@amd.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Juri Lelli <juri.lelli@redhat.com>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
	Valentin Schneider <vschneid@redhat.com>,
	Madadi Vineeth Reddy <vineethr@linux.ibm.com>,
	Hillf Danton <hdanton@sina.com>,
	Shrikanth Hegde <sshegde@linux.ibm.com>,
	Jianyong Wu <jianyong.wu@outlook.com>,
	Yangyu Chen <cyy@cyyself.name>,
	Tingyin Duan <tingyin.duan@gmail.com>,
	Vern Hao <vernhao@tencent.com>, Vern Hao <haoxing990@gmail.com>,
	Len Brown <len.brown@intel.com>, Aubrey Li <aubrey.li@intel.com>,
	Zhao Liu <zhao1.liu@intel.com>, Chen Yu <yu.chen.surf@gmail.com>,
	Chen Yu <yu.c.chen@intel.com>,
	Adam Li <adamli@os.amperecomputing.com>,
	Aaron Lu <ziqianlu@bytedance.com>, Tim Chen <tim.c.chen@intel.com>,
	Josh Don <joshdon@google.com>, Gavin Guo <gavinguo@igalia.com>,
	Libo Chen <libchen@purestorage.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 00/21] Cache Aware Scheduling
Message-ID: <20260220084501.GE2995752@noisy.programming.kicks-ass.net>
References: <cover.1770760558.git.tim.c.chen@linux.intel.com>
 <20260219140828.a7pyzupun7lsdw34@airbuntu>
 <20260219144108.GI1282955@noisy.programming.kicks-ass.net>
 <20260219194845.jqu5ydhid7csukpk@airbuntu>
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In-Reply-To: <20260220034127.ptmnnoisgg3vnxj4@airbuntu>

On Fri, Feb 20, 2026 at 03:41:27AM +0000, Qais Yousef wrote:

> IMHO I see people are constantly tripping over task placement being too simple
> and need smarter decision making process.

So at the same time we're always having trouble because its too
expensive for some.