From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Kim Chuan Lim <lim.kim.chuan@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] configuration scripts doesn't work
Date: Mon, 31 Jul 2006 17:05:00 +0200 [thread overview]
Message-ID: <17614.7196.329385.212915@domain.hid> (raw)
In-Reply-To: <e325d110607310723r18eec657vf1e9bd6d7fdde2a5@domain.hid>
Kim Chuan Lim wrote:
> Hi Gilles,
>
> The error message i get when try to run the latency test program..
> warming up...
> latency: failed to set periodic, code -110
>
> The message you got initially told you that a discrepancy between the
> CPU selected at kernel level and the user-support has been detected.
> To fix this, you need to select a x86 CPU supporting a timestamp
> counter when configuring your kernel, since by default, the configure
> script assumes --enable-x86-tsc.
>
>
> May i know what does it mean by "x86 CPU supporting a timestamp
> counter when configuring your kernel"?
When configuring your kernel, in the menu "Processor type and features",
select a CPU that supports the rdtsc instruction. That is, "pentium
classic" or anything better. In order to know if you have selected a CPU
that supports the rdtsc instruction, look for CONFIG_X86_TSC in the
.config file.
Alternatively, if the CPU you use really does not support the rdtsc
instruction, when you configure xenomai, pass the --disable-x86-tsc
flag.
--
Gilles Chanteperdrix.
next prev parent reply other threads:[~2006-07-31 15:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-31 10:04 [Xenomai-help] configuration scripts doesn't work Kim Chuan Lim
2006-07-31 11:44 ` Gilles Chanteperdrix
2006-07-31 14:23 ` Kim Chuan Lim
2006-07-31 15:05 ` Gilles Chanteperdrix [this message]
2006-08-21 20:05 ` Jim Cromie
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