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Date:   Tue, 30 Apr 2019 10:09:10 +0200
From:   Peter Zijlstra <>
To:     Feng Tang <>
Cc:     Andrew Morton <>,
        Arjan van de Ven <>,
        Jonathan Corbet <>,
        Ingo Molnar <>,
        Eric W Biederman <>,
        Dmitry Vyukov <>,
        Thomas Gleixner <>,
        Andy Lutomirski <>,
        Ying Huang <>,
Subject: Re: [RFC PATCH 0/3] latencytop lock usage improvement

On Mon, Apr 29, 2019 at 04:03:28PM +0800, Feng Tang wrote:
> Hi All,
> latencytop is a very nice tool for tracing system latency hotspots, and
> we heavily use it in our LKP test suites.

What data does latency-top give that perf cannot give you? Ideally we'd
remove latencytop entirely.

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