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From: Srikar Dronamraju <srikar@linux.ibm.com>
To: Shrikanth Hegde <sshegde@linux.ibm.com>
Cc: maddy@linux.ibm.com, linuxppc-dev@lists.ozlabs.org,
	peterz@infradead.org, tim.c.chen@linux.intel.com,
	christophe.leroy@csgroup.eu, linux-kernel@vger.kernel.org,
	ritesh.list@gmail.com, kprateek.nayak@amd.com,
	yu.c.chen@intel.com, vineethr@linux.ibm.com,
	vincent.guittot@linaro.org, npiggin@gmail.com,
	mpe@ellerman.id.au
Subject: Re: [PATCH 0/4] powerpc/topology: Introduce llc_override debugfs
Date: Mon, 12 Oct 2026 17:49:19 +0530	[thread overview]
Message-ID: <aszQR3jtdzE0OeB-@linux.ibm.com> (raw)
In-Reply-To: <20261012102037.2477378-1-sshegde@linux.ibm.com>

* Shrikanth Hegde <sshegde@linux.ibm.com> [2026-10-12 15:50:33]:


Hi Shrikanth,

> There is a new feature in scheduler called as Cache Aware Scheduling [1].
> It tries to keep related tasks within the same LLC domain while
> keeping the system reasonably balanced.
> 
> Cache Aware Scheduling assumes that the scheduler LLC domain is large enough
> to be a useful placement target. This is true on many systems where an LLC spans
> several cores, but not on PowerPC systems where the scheduler-visible LLC is at
> the SMT level. In that case, sd_llc_size is effectively the SMT width.
> 

Can we add a reference to the earlier attempt to try MCLLC a few years back.

-- 
Thanks and Regards
Srikar Dronamraju

  parent reply	other threads:[~2026-10-12 12:19 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-12 10:20 Shrikanth Hegde
2026-10-12 10:20 ` [PATCH 1/4] powerpc/topology: Introduce llc_override debug knob Shrikanth Hegde
2026-10-12 12:14   ` Srikar Dronamraju
2026-10-12 14:10     ` Shrikanth Hegde
2026-10-12 10:20 ` [PATCH 2/4] powerpc/topology: Add docs for llc_override Shrikanth Hegde
2026-10-12 10:20 ` [PATCH 3/4] powerpc/topology: Update mc/pkg flags based on llc_override Shrikanth Hegde
2026-10-12 10:20 ` [PATCH 4/4] powerpc/topology: Rebuild sched domains on llc_override change Shrikanth Hegde
2026-10-12 12:19 ` Srikar Dronamraju [this message]
2026-10-12 14:14   ` [PATCH 0/4] powerpc/topology: Introduce llc_override debugfs Shrikanth Hegde

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