linux-kernel - Re: [RFC PATCH] sched/fair: Interleave cfs bandwidth timers for improved single thread performance at low utilization

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Message-ID: <Y/XiKKDLcejSYc6+@hirez.programming.kicks-ass.net>
Date:   Wed, 22 Feb 2023 10:36:40 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Benjamin Segall <bsegall@...gle.com>
Cc:     shrikanth hegde <sshegde@...ux.vnet.ibm.com>, mingo@...hat.com,
        Vincent Guittot <vincent.guittot@...aro.org>,
        dietmar.eggemann@....com, Thomas Gleixner <tglx@...utronix.de>,
        Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        svaidy@...ux.ibm.com, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] sched/fair: Interleave cfs bandwidth timers for
 improved single thread performance at low utilization

On Tue, Feb 21, 2023 at 01:43:27PM -0800, Benjamin Segall wrote:
> The value should never come up, so it's just a question of if it's fine
> to call get_random_* in early contexts, which I don't know offhand.

Should be, scheduler init is quite late as things go and people have
been pushing the random init earlier and earlier.