linux-kernel - Re: [PATCH V5 1/6] Sched: Scheduler time slice extension

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Message-ID: <20250610124042.46b54b51@gandalf.local.home>
Date: Tue, 10 Jun 2025 12:40:42 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Prakash Sangappa <prakash.sangappa@...cle.com>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "peterz@...radead.org" <peterz@...radead.org>,
 "mathieu.desnoyers@...icios.com" <mathieu.desnoyers@...icios.com>,
 "tglx@...utronix.de" <tglx@...utronix.de>, "kprateek.nayak@....com"
 <kprateek.nayak@....com>, "vineethr@...ux.ibm.com" <vineethr@...ux.ibm.com>
Subject: Re: [PATCH V5 1/6] Sched: Scheduler time slice extension

On Tue, 10 Jun 2025 16:31:05 +0000
Prakash Sangappa <prakash.sangappa@...cle.com> wrote:

> Ok, adding load also seems to increase the max latency.

Right.

> 
> It is up to Peter to decide if scheduler time extension should be restricted to non RT threads.

Peter was against restricting it to just non RT threads because he said it
wouldn't make a difference. He asked for benchmarks that says otherwise.

I'm now supplying the benchmarks that say it does make a difference.

Hopefully Peter will now change his mind.

-- Steve