From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rodrigo Rubira Branco Subject: Re: Why is Linux not RTOS? Date: Tue, 29 May 2007 21:47:35 -0300 Message-ID: <1180486056.5473.28.camel@localhost.localdomain> References: <7783925d0704040521q3755394uf774884b5298eec2@mail.gmail.com> <7783925d0704040605s4590d421y39ae5b13a020a8a@mail.gmail.com> <200704051236.29847.Tzahi.ML2@gmail.com> Reply-To: rrbranco@br.ibm.com Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-iayHCDsRV7cAhLA2fYKN" Return-path: In-Reply-To: Sender: linux-newbie-owner@vger.kernel.org List-Id: To: Raseel Bhagat Cc: kernelnewbies@nl.linux.org, linux-newbie@vger.kernel.org --=-iayHCDsRV7cAhLA2fYKN Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Ok, let's clarify somethings ;) First of all I really recommend this links: http://www.linuxjournal.com/article/9361 http://rt.wiki.kernel.org/ The real-time implementations previously commented in the list relies on "interrupt shielding" (forcing interrupts to run on a reserved CPU) and "CPU pinning" (forcing real-time tasks to only run on a CPU which doesn't run any other tasks), so we can't say it's a 'real' real-time ;) (it does not take the best advantage of multiple cpu's for example and needs more than just one in anyway). Legal notice: It's just my personal contribution. P.S.: Sorry my delay to answer that ;) On Thu, 2007-04-05 at 15:37 +0530, Raseel Bhagat wrote: > Hi Tzahi, >=20 > On 4/5/07, Tzahi Fadida wrote: > > What is this i hear about PREEMT_RT from VirtualLogix: > > http://www.wirelessiq.com/content/newsfeed/9867.html >=20 > I think the author is trying to mention the different innovative > solutions to the latency issue in the GPOS Linux Kernel. PREEMPT_RT , > IIRC was a Real Time patch by Ingo Molar. > VirtualLogix's Virtual OS is another such solution, etc. >=20 > Thanks, > Raseel > - > To unsubscribe from this list: send the line "unsubscribe linux-newbie" i= n > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.linux-learn.org/faqs --=20 Rodrigo Rubira Branco Software Engineer=20 Advanced Linux Response Team (ALRT) / Linux on Power Toolchain IBM Linux Technology Center (IBM/LTC) rrbranco@br.ibm.com GPG KeyID: 1FCEDEA1 --=-iayHCDsRV7cAhLA2fYKN Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) iD8DBQBGXMmnRpuC3B/O3qERAlHJAJ4lYdqW4xSPQlXoA/rK7ESGAH4XrgCfVd2k 45jib0ZJ5WP5IM7oZ35lIio= =iXbf -----END PGP SIGNATURE----- --=-iayHCDsRV7cAhLA2fYKN-- - To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs