memory leak in CasaCore.Measures

Question

memory leak in CasaCore.Measures

mweastwood opened this issue 8 years ago · comments

Do the following a 100,000 times and I'm seeing ~1GB memory usage. Oops.

frame = ReferenceFrame()
set!(frame, Epoch(epoch"UTC", 1.0seconds))
set!(frame, Position(pos"ITRF", 0.0, 0.0, 1.0))

Michael Eastwood · Answer 1 · Thu Feb 09 2017 07:42:10 GMT+0800 (China Standard Time)

This seems to be at least partly due to the fact that the Julia GC doesn't truly understand how large some of these objects are. All it sees is a pointer so there isn't ever any memory pressure to call the finalizer. I possibly need to rethink how I am doing things here...

Michael Eastwood · Answer 2 · Thu Feb 09 2017 07:44:03 GMT+0800 (China Standard Time)

It would be great actually if I never had any types with Ptr{Void} fields that are deleted only when the finalizer gets called.

Michael Eastwood · Answer 3 · Thu Oct 12 2017 08:55:14 GMT+0800 (China Standard Time)

Fixed by #65

There is still a Ptr{Void} field in Table, so I think there will also be memory problems if you're opening thousands of tables, but I think that's a fix for another time.