linux-kernel - RE: [PATCH 4/4] selftests/resctrl: Adjust SNC support messages

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Message-ID: <SJ1PR11MB608303C5E0BEB42CAC5B02BAFC2D2@SJ1PR11MB6083.namprd11.prod.outlook.com>
Date: Mon, 18 Mar 2024 20:47:41 +0000
From: "Luck, Tony" <tony.luck@...el.com>
To: "Chatre, Reinette" <reinette.chatre@...el.com>, James Morse
	<james.morse@....com>
CC: "Wieczor-Retman, Maciej" <maciej.wieczor-retman@...el.com>, "Yu, Fenghua"
	<fenghua.yu@...el.com>, Shuah Khan <shuah@...nel.org>,
	"ilpo.jarvinen@...ux.intel.com" <ilpo.jarvinen@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>
Subject: RE: [PATCH 4/4] selftests/resctrl: Adjust SNC support messages

> What is the use case for needing to expose the individual cluster counts? What if
> resctrl just summed the cluster counts and presented the data as before - per L3
> cache instance? I doubt that resctrl would be what applications would use to verify
> whether they are "well behaved" wrt NUMA.

Reinette,

My (perhaps naïve) belief is that in a cloud server environment there are many
well behaved NUMA applications. Only presenting the sum would lose the detailed
information from each SNC node.

-Tony