From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: rolf.freitag@email.de
Cc: r t <linux-rt-users@vger.kernel.org>
Subject: Re: Variance, Standard Deviation, Skewness and Kurtosis for cyclictest results?
Date: Mon, 26 Jun 2017 16:30:35 +0200 [thread overview]
Message-ID: <20170626143035.kir3ym6so6yifrza@linutronix.de> (raw)
In-Reply-To: <trinity-bc729c2f-fd82-4804-bc70-99fab82bf762-1498257529316@3capp-webde-bs65>
On 2017-06-24 00:38:49 [+0200], rolf.freitag@email.de wrote:
> Hi,
Hi,
> many programs, e. g. ping also print the standard deviation of the measured times, so i would like get the standard deviation(s) also from cyclictest.
> It's easy to also calculate Variance, Skewness and Kurtosis in the same pass: https://www.johndcook.com/blog/skewness_kurtosis/
> Has someone planned to implement this in cyclictest?
cyclictest prints min/avg/max. min and avg are nice to look at. The
important part is the max value. If you have avg at 30us and max at
500us then you know, that you can't meet your deadline for a cycle of
400us.
> Regards,
>
> Rolf
Sebastian
next prev parent reply other threads:[~2017-06-26 14:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-23 22:38 Variance, Standard Deviation, Skewness and Kurtosis for cyclictest results? rolf.freitag
2017-06-26 14:30 ` Sebastian Andrzej Siewior [this message]
2017-06-26 15:59 ` Piotr Gregor
2017-06-26 16:20 ` Sebastian Andrzej Siewior
2017-06-26 17:12 ` rolf.freitag
2017-06-27 8:18 ` Nicholas Mc Guire
2017-06-27 10:33 ` Piotr Gregor
2017-06-27 11:39 ` Nicholas Mc Guire
2017-06-27 12:33 ` Piotr Gregor
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