Hi Christiaan, A Friday 03 April 2009, Christiaan Putter escrigué: > Hi guys, > > I'm having some issues with multiple threads and pytables. I have a > single lock attached to the file and use it when both reading and > writing to the file. When I'm only running one thread there aren't > any problems, though several threads cause some strange and > unpredictable behaviour. It seems to be more stable on linux then > windows for some reason. > > Symptoms include: > - program crash. no exceptions. no trace back. app simply > disappears - unexpected exceptions > - write failures > > > It would be nice if someone could advice me on some best practices > for using threads with pytables. What should I consider as an > "atomic" operation from my side?
Yeah. Seems like you are trying to delete objects from the object tree from different threads, and apparently this makes the LRU cache for objects to choke. Mmh, how are you locking your file? It would help a lot if you can provide a small script that exposes the problem. Cheers, -- Francesc Alted "One would expect people to feel threatened by the 'giant brains or machines that think'. In fact, the fightening computer becomes less frightening if it is used only to simulate a familiar noncomputer." -- Edsger W. Dykstra "On the cruelty of really teaching computer science" ------------------------------------------------------------------------------ _______________________________________________ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
