Andras Garzo wrote: > Hi, > > I'm sorry that I've disappeared, but since then I've absolutely no time > to continue this project. > Now I try to patch my xmit rutin, to trigger transmission atomic, but > I'm not sure how it works now...
Well, you placed the timestamp patching outside the lock while your own comment already marks the right location... > Please take a look at that, here's the code: > http://garzoand.web.elte.hu/blackfin/bfport > > Another question: the telnet via rtnetproxy is very slow, and often > freezes my system for 5-6 seconds. > After that, the system continues running, but some times later hangs > again. Do you have any idea, why? Maybe you are loosing packets somewhere. You should first try to analyze the traffic on the wire vs. on RTnet node to check where the problem is. > But there's an another interesting thing: we are using GPS to syncronize > system time. The PPS signal is > connected to one of the pushbuttons, and we are handling the rising irq > via rtdm. When the GPS works, > and we get a PPS signal periodicly in every secounds, the system never > hangs (however telnet and ssh still > slow but useable, FTP and scp works fine). How can it possible? Last time I checked with my stamp board, the Adeos patch for bfin caused some negative side-effects on Linux scheduling. I'm not sure if that issue still persists, but I haven't heard any news regarding this from Philippe. That issue /may/ also bite you here (ie. you aren't actually facing packet drops). However, first check for packets drops / overfull queues. If that is not the problem, it would interesting to try your load on a different architecture, e.g. a standard PC. Jan
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