Re: [RFC PATCH v4 2/3] sched: Avoid placing RT threads on cores handling long softirqs

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

To: John Stultz <jstultz@xxxxxxxxxx>
Subject: Re: [RFC PATCH v4 2/3] sched: Avoid placing RT threads on cores handling long softirqs
From: Hillf Danton <hdanton@xxxxxxxx>
Date: Wed, 5 Oct 2022 08:21:49 +0800
Cc: LKML <linux-kernel@xxxxxxxxxxxxxxx>, linux-mm@xxxxxxxxx, "Connor O'Brien" <connoro@xxxxxxxxxx>, Qais Yousef <qais.yousef@xxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>
In-reply-to: <CANDhNCoVzJ_MSyAigMkE-TMgfRQRkiK=G0_S3OwPfnXPuKu1iA@mail.gmail.com>
References: <20221003232033.3404802-3-jstultz@google.com> <20221004013611.1822-1-hdanton@sina.com>

On 3 Oct 2022 19:29:36 -0700 John Stultz <jstultz@xxxxxxxxxx>
> 
> Why would ksoftirqd preempt the rt task?
> 
For example the kthread becomes sensitive to latency.

Follow-Ups:
- Re: [RFC PATCH v4 2/3] sched: Avoid placing RT threads on cores handling long softirqs
  - From: John Stultz

References:
- Re: [RFC PATCH v4 2/3] sched: Avoid placing RT threads on cores handling long softirqs
  - From: Hillf Danton
- Re: [RFC PATCH v4 2/3] sched: Avoid placing RT threads on cores handling long softirqs
  - From: John Stultz

Prev by Date: Re: [PATCH v2 01/39] Documentation/x86: Add CET description
Next by Date: Re: [PATCH v2 04/39] x86/cpufeatures: Enable CET CR4 bit for shadow stack
Previous by thread: Re: [RFC PATCH v4 2/3] sched: Avoid placing RT threads on cores handling long softirqs
Next by thread: Re: [RFC PATCH v4 2/3] sched: Avoid placing RT threads on cores handling long softirqs
Index(es):
- Date
- Thread

[Index of Archives] [Linux ARM Kernel] [Linux ARM] [Linux Omap] [Fedora ARM] [IETF Annouce] [Bugtraq] [Linux OMAP] [Linux MIPS] [eCos] [Asterisk Internet PBX] [Linux API]

Powered by Linux