Hi David, I had a weird issue, i think it's related to thread but dont know if it's because of the submission. I use a lot of threads not at the same time but on a long period. It seams the thread i create are not remove from memory, so at the end of day i have 3Gb of virtual memory used. Doing a memory map i can see a lot of memory entry with 8MB and at a given time my program stop to create thread (from a limit i guess). I did not dig enough yet to tell more, but if some of you have an idea or suggestion i will take them.
Cheers, Cedric -- +33 659 598 614 Cedric Pinson mailto:[email protected] http://www.plopbyte.net On Fri, 2009-10-16 at 08:31 -0500, David Fries wrote: > This was against 2.8.1, but I see the trunk is identical. > Any issues with using PTHREAD_STACK_MIN? > http://www.opengroup.org/onlinepubs/9699919799/functions/pthread_attr_getstacksize.html > > > I was trying to create a lot of threads under 32 bit Linux, but could > only create 376, then the program would hang. > 376 * 8MB stack per thread = 3008 MB > The stack size allocated per thread blew the process address stack. > To get more threads you have to specify a smaller per thread stack, > but while the Thread::start says it will limit the stack size to the > smallest allowable stack size, it won't let it be smaller than the > default. I included the limits.h header to use PTHREAD_STACK_MIN as > the minimum stack size. > > As for the deadlock, if the pthread_create failed, the new thread > doesn't exist and doesn't call threadStartedBlock.release(), so the > existing thread deadlocks on threadStartedBlock.block(). Only block > if the thread was started. > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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