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. Jan
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