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From: Dmitry Adamushko <dmitry.adamushko@domain.hid>
To: xenomai@xenomai.org
Subject: [Xenomai-help] [testsuite/latency] intervals are much > than 1 second
Date: Fri, 16 Dec 2005 14:53:02 +0200	[thread overview]
Message-ID: <b647ffbd0512160453w6baa9d4g@domain.hid> (raw)

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Hello all,

I have been out of xeno-scope for a while so maybe I successufy missed
something important
that might be the explanation of a problem described below.

The problem is as follows:

x86-ipipe-1.0.10 && xenomai-2.1 (CVS: ~ November, 21)

testsuite/letency is used as it is by defaulty (nsamples = 1 billion (1
second) / sample (e.g.100000 us))

I am used to getting data with ~1-second-interval on the screen when
"latency" is running and so expected to observe the same behaviour now.

Nevertheless, the interval (with all parameters by default) is ~ 4 seconds,
and it gets up to 16-17 seconds when -p 1000 (sampling period == 1 ms.) is
used.

e.g. it took 1 minute and 30 seconds to get 21 lines of statistics on the
screen (-p 100) but should have been ~22-23 seconds.

And the latency thread really reported the presence of collected data 21
times (through rt_sem_v()) .

So have I missed something important? any ideas are wellcome.

--
Best regards,
Dmitry Adamushko

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             reply	other threads:[~2005-12-16 12:53 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-12-16 12:53 Dmitry Adamushko [this message]
2005-12-16 13:03 ` [Xenomai-help] [testsuite/latency] intervals are much > than 1 second Philippe Gerum
2005-12-16 15:00   ` Gilles Chanteperdrix
2005-12-17 10:11   ` Dmitry Adamushko

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