From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <26440461.1166445600596.JavaMail.ngmail@domain.hid> Date: Mon, 18 Dec 2006 13:40:00 +0100 (CET) From: "M. Koehrer" MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Subject: [Xenomai-help] rtnet / Xenomai: Kernel 2.6.19.1 hangs, 2.6.17.7 works List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: rtnet-users@domain.hid, xenomai@xenomai.org Hi rtnet and Xenomai users, I have an issue with the latest Xenomai (svn #1962) and rtnet (svn #1095) v= ersions using kernel 2.6.19.1. The very same application worked fine on 2.6.17.7 (s= ame Xenomai/rtnet). My application does the following steps in user space: 1) I open one UDP socket to an embedded device. 2) The timeout of the socket is set to 5 seconds. 3) I send out one UDP message A via rt_dev_send() to the device. 4) Then I wait for the response for A in rt_dev_recv() 5) Directly after the return of rt_dev_recv() I send message B via rt_dev_= send() 6) Then I wait for the response for B in rt_dev_recv() Here my PC freezes. I am no longer able to access it, I have to press the r= eset button on the PC. I have connected the PC and the embedded device with a hub. This allows me = to monitor the network traffic using a second PC. Ethereal shows me, that message B is sent to the= embedded device and the response of B is sent back to the PC. Whenever I place a printf() directly after the rt_dev_recv() statements to = see what happens, everything works fine and the PC no longer freezes. As mentioned above, when I use the very same application with 2.6.17.7 (sam= e Xenomai, rtnet version) everything is perfect! I have a Pentium 4 Dual core, SMP enabled. Any idea on this strange behaviour? Thanks for any feedback Regards Mathias --=20 Mathias Koehrer mathias_koehrer@domain.hid Viel oder wenig? Schnell oder langsam? Unbegrenzt surfen + telefonieren ohne Zeit- und Volumenbegrenzung? DAS TOP ANGEBOT JETZT bei Arcor: g=FCnsti= g und schnell mit DSL - das All-Inclusive-Paket f=FCr clevere Doppel-Sparer, nur 44,85 =80 inkl. DSL- und ISDN-Grundgeb=FChr! http://www.arcor.de/rd/emf-dsl-2