linux-kernel - Re: [PATCH] cpufreq: longhaul: Set transition_delay

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Message-ID: <alpine.LRH.2.21.1712070714190.11844@math.ut.ee>
Date:   Thu, 7 Dec 2017 07:14:53 +0200 (EET)
From:   Meelis Roos <mroos@...ux.ee>
To:     Viresh Kumar <viresh.kumar@...aro.org>
cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Rafael Wysocki <rjw@...ysocki.net>,
        Linux PM <linux-pm@...r.kernel.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        "4 . 14+" <stable@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cpufreq: longhaul: Set transition_delay_us to 20 ms

> > 30000 was not reliable.
> > 
> > I created root cron job
> > @reboot sleep 120; /sbin/reboot
> > 
> > and by the evening it was dead again.
> > 
> > Will try 50000 tomorrow.
> 
> Lets make it similar to what it was before my original patch modified
> it, to avoid all corner cases.
> 
> Please test against 200 ms, 200000 value here.

20000 was the first one tested, after it was unreliable, I tested 30000 
and that was unreliable too.

-- 
Meelis Roos (mroos@...ux.ee)