From: Philippe Gerum <rpm@xenomai.org>
To: Jeroen Van den Keybus <jeroen.vandenkeybus@domain.hid>
Cc: xenomai-core <xenomai@xenomai.org>
Subject: Re: [Xenomai-core] PRNG not seeded on AMD K7
Date: Sun, 12 Mar 2006 16:55:21 +0100 [thread overview]
Message-ID: <44144469.5060508@domain.hid> (raw)
In-Reply-To: <fd6a47a90603120709k2dcc2a4h@domain.hid>
Jeroen Van den Keybus wrote:
> When I try to open an ssh connection to or from a PC running Xenomai, I
> get a 'PRNG not seeded' error. However, it only occurs when an RT
> application is running (such as 'latency'). The computer on which this
> occurs is an AMD K7-650. I've tested on a Pentium III 500 as well
> (nearly same .config) and this error doesn't show up then.
>
> Any idea of where I should start debugging ? I assume that PRNG stands
> for 'Programmable Random Number Generator' or something like that.
First guess: something might be perturbated by Xeno's FPU management on AMD; the
fact that /dev/random might be involved in the issue would tend to confirm this.
Does disabling CONFIG_XENO_HW_FPU on the AMD box change anything?
>
> Jeroen.
>
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Xenomai-core mailing list
> Xenomai-core@domain.hid
> https://mail.gna.org/listinfo/xenomai-core
--
Philippe.
prev parent reply other threads:[~2006-03-12 15:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-12 15:09 [Xenomai-core] PRNG not seeded on AMD K7 Jeroen Van den Keybus
2006-03-12 15:50 ` Gilles Chanteperdrix
2006-03-12 16:32 ` Gilles Chanteperdrix
2006-03-12 15:55 ` Philippe Gerum [this message]
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