Great, a nice test case. Should be fixable. I like the shell script approach.
Paul Alfille On Tue, May 26, 2009 at 10:15 AM, Steinar Midtskogen <stei...@latinitas.org>wrote: > Matthias Urlichs <sm...@smurf.noris.de> writes: > > > Hi, > > > > Steinar Midtskogen: > >> In some directory listings for the hubs, I notice that the hub > >> (1F.xxx) and others on hte main bus reappear. Is that an error? > >> > > Yes. That shouldn't happen. > > I'm suspecting that this is another issue, and less harmful. Both of > the other problems, unreadable files and owserver crashing/dying seem > to be unrelated to hubs on closer inspection. I'm now reproducing > both issues on a bus without hubs with only 5 devices. > > The problem seems to be that owserver is relatively fine as long as > the requests come in an orderly fashion, such as in this script: > > #!/bin/sh > > while true; do > owget -s 3000 uncached/10.7F1914000800/temperature > owget -s 3000 20.E0C700000000/volt.ALL > owget -s 3000 uncached/1D.0A5201000000/counters.A > owget -s 3000 10.7F1914000800/temperature > owget -s 3000 26.22FB4F000000/temperature > owget -s 3000 26.22FB4F000000/VDD > sleep 2 > done > > But if I change the script to requesting everything at the same time, > like this: > > #!/bin/sh > > while true; do > owget -s 3000 uncached/10.7F1914000800/temperature & > owget -s 3000 20.E0C700000000/volt.ALL & > owget -s 3000 uncached/1D.0A5201000000/counters.A & > owget -s 3000 10.7F1914000800/temperature & > owget -s 3000 26.22FB4F000000/temperature & > owget -s 3000 26.22FB4F000000/VDD & > sleep 5 > done > > then owserver breaks within seconds, owget processes pile up because > owserver doesn't respond for some files. Eventally owserver might crash. > > In this case it seems to be both temperature and VDD in > 26.22FB4F000000 that become unreadable (owget never finishes). > Everything is fine again for some seconds if I restart owserver. > > This is bad for my logger program, since it intends to leave all > queueing issues to owserver. > > -- > Steinar ; NIL DIFFICILE VOLENTI ; http://latinitas.org ; > http://voksenlia.net > > > ------------------------------------------------------------------------------ > Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT > is a gathering of tech-side developers & brand creativity professionals. > Meet > the minds behind Google Creative Lab, Visual Complexity, Processing, & > iPhoneDevCamp asthey present alongside digital heavyweights like Barbarian > Group, R/GA, & Big Spaceship. http://www.creativitycat.com > _______________________________________________ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers >
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