From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4667D008.80109@domain.hid> Date: Thu, 07 Jun 2007 11:29:44 +0200 From: Jan Kiszka MIME-Version: 1.0 References: <7289437c0706060801i299d6881w31cc5ffee3444ace@domain.hid> <1181143109.17978.101.camel@domain.hid> <7289437c0706062254v2a386894oeb498459877d5086@domain.hid> <4667AA4D.6070505@domain.hid> <7289437c0706070042gf4346ddj1c4ee3ac20a068d2@domain.hid> <4667BBBE.1040405@domain.hid> <4667CEF2.2050509@domain.hid> In-Reply-To: <4667CEF2.2050509@domain.hid> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig423B83898B345AF3B5BBF6CB" Sender: jan.kiszka@domain.hid Subject: Re: [Xenomai-help] Cyclictest List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Gilles Chanteperdrix Cc: xenomai-help This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig423B83898B345AF3B5BBF6CB Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Gilles Chanteperdrix wrote: > Jan Kiszka wrote: >> Perrine Martignoni wrote: >> >>> Ok. I'll do this. >>> >>> But I don't understand why the same application compiled without any = links >>> with Xenomai give different results if there is Xenomai in the kernel= =2E >> >> [Looking at your numbers again] Hmm, maybe some rounding issue of tick= s >> due to whatever side-effect of I-pipe. We would first of all need the >> usual set of information (.config, involved versions) and also >> /sys/devices/system/clocksource/clocksource0/current_clocksource. >=20 > Maybe what Perrine is observing is simply the overhead of the I-pipe ? > I mean, Linux is Xenomai idle task, so it is acceptable for Linux > numbers to be a bit worse than when Xenomai is not running. I bit worse is expected. But I think we are seeing 1 or 2 ticks wake-up delays here. As far as I understood, they are not due to Xenomai consuming significant cycles in the background, are they, Perrine? Jan --------------enig423B83898B345AF3B5BBF6CB Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD4DBQFGZ9AIniDOoMHTA+kRAtckAJYgZBm4Q1cenTbPqrmUiV+giemgAJ48EmZR XcCRZPQzrurgirxxPxcxYg== =OYH+ -----END PGP SIGNATURE----- --------------enig423B83898B345AF3B5BBF6CB--