From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Thu, 16 Apr 2015 18:18:19 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Message-ID: <20150416161819.GG1589@hermes.click-hack.org>
References: <CACreCVJiKuVmA5cnH7sLxK=3-nCJwo=Q-bJFugLgoM8LTDdYWQ@mail.gmail.com>
 <20150416132316.GD1589@hermes.click-hack.org>
 <552FBC6B.4070402@siemens.com>
 <CACreCVLZwXhFiWzpFewR+a6ab6+SyKQnPLFA7=mP5BcwEFzugA@mail.gmail.com>
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Subject: Re: [Xenomai] CLOCK_HOST_REALTIME failure on Xenomai 3
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To: GP Orcullo <kinsamanka@gmail.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>, "xenomai@xenomai.org" <xenomai@xenomai.org>

On Fri, Apr 17, 2015 at 12:12:01AM +0800, GP Orcullo wrote:
> On Thu, Apr 16, 2015 at 9:43 PM, Jan Kiszka <jan.kiszka@siemens.com> wrote:
> > On 2015-04-16 15:23, Gilles Chanteperdrix wrote:
> >> On Thu, Apr 16, 2015 at 07:20:09PM +0800, GP Orcullo wrote:
> >>> Hi,
> >>>
> >>> I'm trying to run Xenomai 3 on my Cubieboard2 but it fails the clocktest:
> >>>
> >>> # /usr/xenomai/bin/clocktest -C 42
> >>> clock_gettime failed for clock id == Tested clock: 42 (<unknown>)
> >>> CPU      ToD offset [us] ToD drift [us/s]      warps max delta [us]
> >>> --- -------------------- ---------------- ---------- --------------42
> >>>
> >>>   0                  0.0            0.000          0            0.0
> >>>   1                  0.0            0.000          0            0.0
> >>> clock_gettime failed for clock id 42
> >>>
> >>> The clock test runs fine on Xenomai 2:
> >>>
> >>> # clocktest -C 42
> >>> == Tested clock: 42 (CLOCK_HOST_REALTIME)
> >>> CPU      ToD offset [us] ToD drift [us/s]      warps max delta [us]
> >>> --- -------------------- ---------------- ---------- --------------
> >>>   0                  1.0            0.093          0            0.0
> >>>   1                  0.8            0.000          0            0.0
> >>> ^C
> >>
> >> CLOCK_HOST_REALTIME is no longer 42 in Xenomai 3 (which is why
> >> clocktest tells you that the clockid 42 is unknown, it really is).
> >>
> >
> > CLOCK_HOST_REALTIME is an extension clock, thus you need
> >
> > clocktest -E -C 42
> >
> > in Xenomai 3.
> >
> > Jan
> >
> > --
> > Siemens AG, Corporate Technology, CT RTC ITP SES-DE
> > Corporate Competence Center Embedded Linux
> 
> The answer is 32 :)
> 
> # /usr/xenomai/bin/clocktest -D -C 32
> hostrt data area is live
> sequence counter : 261312
> wall_time_sec    : 3698
> wall_time_nsec   : 660000622
> wall_to_monotonic_sec    : -2392
> wall_to_monotonic_nsec   : 103430917
> cycle_last       : 31565440899
> mask             : 0xffffffffffffffff
> mult             : 699050667
> shift            : 24
> 
> == Tested clock: 32 (CLOCK_HOST_REALTIME)
> CPU      ToD offset [us] ToD drift [us/s]      warps max delta [us]
> --- -------------------- ---------------- ---------- --------------
>   0                  1.4           -0.034          0            0.0
>   1                  1.4            0.134          0            0.0
> 
> 
> BTW, any idea on how to diagnose the switchtest issue? The test is
> running but it is not generating any output. It looks like "-q -Q"
> switches are enabled.

It probably failed, then failed to report the error and is just
hanging there blocked. You can try and pass command line arguments
to reduce the (insane by default) number of tasks it creates, in
order to try and reduce the failure to a simple one. The first tasks
to avoid are probably kernel tasks.

-- 
					    Gilles.