On Tuesday 08 January 2008 17:41, Wolfgang Grandegger wrote: > Robert Schwebel wrote: > > Hi Wolfgang, > > > > On Tue, Jan 08, 2008 at 11:13:11AM +0100, Wolfgang Grandegger wrote: > >> I gave -rt another try on my Icecube-MPC5200 board with > >> patch-2.6.24-rc5-rt1 > > > > Unfortunately, I only have 2.6.23.1-rt5 for the phyCORE-MPC5200B-tiny > > (400 MHz) at the moment, but I can refactor it to match your version. > > You are obviously using a 2.6.23.1 with private patches for MPC5200 as > there is no FEC driver or no clock event support in that version. The > _official_ 2.6.24-rc5 finally builds fine and works for my > Icecube-Eval-Board :-). Yes, it would make sense to add board support > for the phyCORE-MPC5200B-tiny for that version. > > >> and this time I got it working with the attached little patch fixing > >> an oops in the serial driver. Unfortunately, cyclictest reports rather > >> high latencies up to 500 us under load: > > > > Can you elaborate which load you are using? > > "while ls; do ls; done" in a telnet window, "ping -f <host-ip>" and the > cache calibrator. > > >> # ./cyclictest -n -p80 -t1 -i10000 > >> 3.55 2.82 1.55 2/45 9971 > >> > >> T: 0 ( 922) P:80 I:10000 C: 64228 Min: 28 Act: 71 Avg: 78 Max: 502 Please try to run cyclictest with "-q" (=avoid interrupts on serial or network connection) and test if it makes a difference. Juergen -- Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Vertretung Sued/Muenchen, Germany Phone: +49-8766-939 228 | Fax: +49-5121-206917-9 - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
