From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: "Stéphane ANCELOT" <sancelot@free.fr>,
"xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai] core I5 latency+USB
Date: Mon, 07 Jul 2014 18:24:28 +0200 [thread overview]
Message-ID: <53BAC9BC.7020208@xenomai.org> (raw)
In-Reply-To: <53BAC761.1000602@free.fr>
On 07/07/2014 06:14 PM, Stéphane ANCELOT wrote:
> Hi,
>
> I have got high latencies up to 25us using my usb keyboard,
> which setting in kernel 3.10 should I set ?
Follow the troubleshooting guide:
http://www.xenomai.org/documentation/xenomai-2.6/html/TROUBLESHOOTING/#_the_latency_test_shows_high_latencies
That said, 25us may not be such a high latency. You may also
want to try xenomai 2.6 git, which has a workaround for some
core i* automatic switch to C1E state when idle.
--
Gilles.
prev parent reply other threads:[~2014-07-07 16:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-07 16:14 [Xenomai] core I5 latency+USB Stéphane ANCELOT
2014-07-07 16:24 ` Gilles Chanteperdrix [this message]
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