From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: "Wolz, Troy" <Troy.Wolz@domain.hid>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai-help] Xenomai Periodic Latency Spikes
Date: Fri, 18 May 2012 00:15:53 +0200 [thread overview]
Message-ID: <4FB57899.7080704@domain.hid> (raw)
In-Reply-To: <E2AB2206BF591546A1931EA4E7A9FBC841502023@domain.hid>
On 05/17/2012 09:12 PM, Wolz, Troy wrote:
> Hello,
>
> When running the latency program provided in the Xenomai source, my
> latency numbers for 'max latency' is consistently over 30 us. I have
> installed Xenomai 2.6.0 using Linux kernel 2.6.38.8. I have attached
> my config for my linux kernel. SMI is disabled, legacy USB support is
> disabled in the BIOS, and the other obvious latency killers provided
> in the troubleshooting guide have been checked.
Oly CONFIG_ACPI_PROCESSOR should be turned off. It is recommended to
keep CONFIG_ACPI on.
CONFIG_XENO_OPT_DEBUG_XNLOCK has some impact on latencies, if you want
to reduce latencies, you should turn it off.
--
Gilles.
prev parent reply other threads:[~2012-05-17 22:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-17 19:12 [Xenomai-help] Xenomai Periodic Latency Spikes Wolz, Troy
2012-05-17 19:16 ` Gilles Chanteperdrix
[not found] ` <E2AB2206BF591546A1931EA4E7A9FBC841502090@domain.hid>
2012-05-17 19:55 ` Gilles Chanteperdrix
2012-05-17 22:15 ` Gilles Chanteperdrix [this message]
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