Jan Kiszka wrote: > Giammarco Zacheo wrote: >> Hi, >> >> we are currently working with RTnet 0.9.7 and RTAI magma on Debian Etch >> 2.6.17 kernel. >> RTnet works fine until we use the rtnet script to stop the slave host. When >> the script reaches 'rtifconfig rteth0 down' the machine freezes (i.e. does > > Master still running at that point, i.e. are packets arriving? Does > pulling the wire make a difference? > >> not accept any input at all from mouse or keyboard). We have two machines, >> both Pentium 4 with Intel boards (ICH5), they act the same way. We have no >> such problem when stopping them as a master. > > All machines UP, or are they SMP? All standard, means simple rtnet.conf > script? Please provide configuration information for reference, also the > .config of your failing host (either packed or sent to me privately). > What is your irq layout? No conflicts RT/non-RT? > >> We tried also Xenomai 2.2.4, 2.3rc1 and 2.3rc2 with RTnet 0.9.6, too, >> but we >> did not manage to solve the problem. > > Means you observed exactly the same failure? Well, this really sounds > like an RTnet issue. > >> We tried on a Realtek 8169 and a Intel >> E100, nope. > > So it's likely a core issue. > >> But...on my damn slow Duron 1200 without APIC and a R8139 everything seems >> to work fine (currently running with Xenomai 2.3rc1 and RTnet 0.9.6). >> >> ...any ideas about it? > > Any oops visible? Try catching it via a serial console. There are also > soft-watchdogs available under both RTAI and Xenomai. Please arm them to > check if we have a run-away thread. Xenomai additionally has support for > a NMI watchdog (maybe RTAI as well, dunno). That one triggers if not > touched and dumps a backtrace. May help if we are in a tight endless loop. >
Any news on some of the suggested steps? Feel free to ask if something remained unclear. Jan
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