From: Shrikanth Hegde <sshegde@linux.ibm.com>
To: Srikar Dronamraju <srikar@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 19:44:32 +0530 [thread overview]
Message-ID: <b03786e6-28f3-4fad-bd32-33803ea2fd8c@linux.ibm.com> (raw)
In-Reply-To: <aszQR3jtdzE0OeB-@linux.ibm.com>
On 10/12/26 5:49 PM, Srikar Dronamraju wrote:
> * 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.
>
Ah yes. will add it.
It is this one.
https://lore.kernel.org/all/1617341874-1205-1-git-send-email-ego@linux.vnet.ibm.com/
But I couldn't find an email id of Gautham which won't bounce. Based on what i know :)
next prev parent reply other threads:[~2026-10-12 14:15 UTC|newest]
Thread overview: 13+ 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 ` [PATCH 0/4] powerpc/topology: Introduce llc_override debugfs Srikar Dronamraju
2026-10-12 14:14 ` Shrikanth Hegde [this message]
2026-10-12 21:15 ` Tim Chen
2026-10-13 9:58 ` Shrikanth Hegde
2026-10-13 20:44 ` Tim Chen
2026-10-13 10:05 ` Chen, Yu C
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