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Re: Softirq priority inversion from "softirq: reduce latencies"

From David Miller <davem@davemloft.net>
Newsgroups linux.kernel
Subject Re: Softirq priority inversion from "softirq: reduce latencies"
Date 2016-02-29 21:30 +0100
Message-ID <r7CC6-7NL-9@gated-at.bofh.it> (permalink)
References <r7AJY-6Ab-9@gated-at.bofh.it> <r7Bd1-6NF-41@gated-at.bofh.it> <r7Bwm-79s-13@gated-at.bofh.it>
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From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 29 Feb 2016 20:14:36 +0100 (CET)

> On Mon, 29 Feb 2016, Peter Hurley wrote:
>> Or flipping your argument on its head, why not just _always_ execute
>> softirq in ksoftirqd?
> 
> Which is what that change effectivley does. And that makes a lot of sense,
> because you get the softirq load under scheduler control and do not let the
> softirq run as a context stealing entity which is completely uncontrollable by
> the scheduler.

+1

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Thread

Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-27 19:20 +0100
  Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-27 21:20 +0100
    Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-27 21:40 +0100
      Re: Softirq priority inversion from "softirq: reduce latencies" David Miller <davem@davemloft.net> - 2016-02-28 00:10 +0100
        Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-28 00:40 +0100
          Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-28 03:10 +0100
            Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-28 03:20 +0100
              Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-28 03:20 +0100
              Re: Softirq priority inversion from "softirq: reduce latencies" David Miller <davem@davemloft.net> - 2016-02-28 05:50 +0100
  Re: Softirq priority inversion from "softirq: reduce latencies" Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-02-28 07:00 +0100
    Re: Softirq priority inversion from "softirq: reduce latencies" Francois Romieu <romieu@fr.zoreil.com> - 2016-02-28 18:10 +0100
      Re: Softirq priority inversion from "softirq: reduce latencies" Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-02-29 06:00 +0100
        Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-29 16:10 +0100
          Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-29 16:30 +0100
            Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-29 17:00 +0100
              Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-29 17:30 +0100
                Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-29 19:10 +0100
                Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-29 19:30 +0100
                Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-29 20:00 +0100
                Re: Softirq priority inversion from "softirq: reduce latencies" Thomas Gleixner <tglx@linutronix.de> - 2016-02-29 20:20 +0100
                Re: Softirq priority inversion from "softirq: reduce latencies" David Miller <davem@davemloft.net> - 2016-02-29 21:30 +0100
                Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-03-01 00:10 +0100
          Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-29 16:30 +0100
            Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-29 20:20 +0100
              Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-29 20:50 +0100
          Re: Softirq priority inversion from "softirq: reduce latencies" Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-02-29 16:50 +0100
            Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-29 17:00 +0100
              Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-29 17:30 +0100
          Re: Softirq priority inversion from "softirq: reduce latencies" David Miller <davem@davemloft.net> - 2016-02-29 18:20 +0100

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