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Date: Tue, 05 Sep 2006 16:49:42 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
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Subject: [Xenomai-core] Re: RTAI Vs Xenomai performance
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To: somshekar kadam <som_kadam@domain.hid>
Cc: xenomai@xenomai.org

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Hi Neelu,

please start a new thread when switching the topic, don't reply to
existing ones (CC'ing people who may not want this).

somshekar kadam wrote:
> HI Jan,
>=20
> I am runnng the testsuite given by RTAI and Xenomai,
>=20
> I need to this figures to compare on performance for
> the doc to port XENOMAI on MIPS.
>=20
> I see RTAI gives results in nanoseconds and XENOMAI in
> microsecond, so i should say latency with Xenomai is
> 3000 micrsecond where as RTAI its 3000 Nanosecond ,
> correct me if I am wrong.=20

RTAI is in nanoseconds as Xenomai used to be in early days, but its
results are as broken as Xenomai's (watch out for the maximum!).

> I have attached both testsuite reults=20

You likely have a SMI problem, see TROUBLESHOOTING for details.

This makes me wonder if some simple test ("dmesg | grep
CONFIG_XENO_HW_SMI_WORKAROUND") in latency or at least in xeno_test to
detect this may make this FAQ less frequent... :)

Jan


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