Hi,
I’m using a simple MakeClass loop a few simple ntuples. I have replaced the TTree with a TChain to add multiple files. It runs fine with one in the tree, but not two. I ran a profiler on the hanging process and it makes a lot of calls to:
operator new(unsigned long)
malloc
malloc_zone_malloc
szone_malloc_should_clear
_spin_lock$VARIANT$mp (libsystem_c.dylib)
Any ideas?