Hi Philippe, I have sent the forwarded e-mail to the rtai-dev mailing list but it didn't arrive yet (maybe there is still a problem with switching to GNA). Maybe you can help?
Furthermore, I'm not that far from checking the ARTI-PPC port in. Currently I'm using RTAI 3.0 (kilauea) but I assume it's better to switch immediately to RTAI 3.1 (vesuvio). Wolfgang. On 07/01/2004 05:07 PM Wolfgang Grandegger wrote: > Hi, > > I have now a very first version of RTAI over ADEOS on PowerPC working on > my Icecube board and I can run sucessfully the tests in "rtai-testing". > Nevertheless, I'm a bit puzzled about the figures reported by the task > switching test "switches". With the old RTAI 24.1.12 I get: > > FOR 30 TASKS: TIME 2177 (ms), SUSP/RES SWITCHES 600000, > SWITCH TIME (INCLUDING FULL FP SUPPORT) 3628 (ns) > > > FOR 30 TASKS: TIME 2296 (ms), SEM SIG/WAIT SWITCHES 600000, > SWITCH TIME (INCLUDING FULL FP SUPPORT) 3827 (ns) > > and with the new ARTI: > > FOR 30 TASKS: TIME 1086 (ms), SUSP/RES SWITCHES 600000, > SWITCH TIME (INCLUDING FULL FP SUPPORT) 1810 (ns) > > > FOR 30 TASKS: TIME 2061 (ms), SEM SIG/WAIT SWITCHES 600000, > SWITCH TIME (INCLUDING FULL FP SUPPORT) 3436 (ns) > > Any ideas where the difference comes from. Especially why a suspend/ > resume is much faster? > > Wolfgang.
