linux-kernel - Re: [PATCH] revert: "softirq: Let ksoftirqd do its job"

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Message-ID: <20230509151932.0YIQkuy6@linutronix.de>
Date:   Tue, 9 May 2023 17:19:32 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Paolo Abeni <pabeni@...hat.com>
Cc:     linux-kernel@...r.kernel.org,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>, peterz@...radead.org,
        netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        Jason Xing <kerneljasonxing@...il.com>,
        Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH] revert: "softirq: Let ksoftirqd do its job"

On 2023-05-08 08:17:44 [+0200], Paolo Abeni wrote:
> Due to the mentioned commit, when the ksoftirqd processes take charge
> of softirq processing, the system can experience high latencies.

Yes. RT wise I tried a lot to keep ksoftirqd from getting scheduled.
With this change, it makes the life a lot easier.

Reviewed-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Sebastian