* Check if the page selection algorithm is working well.
* Check if the page selection algorithm is working well.
* Fix support for large files
* Divide swappability of objects by refcount
* Divide swappability of objects by refcount
* While loading DB from snapshot or AOF, swap objects as needed if maxmemory
is reached, calling swapOneObject().
* vm-swap-file <filename>. The swap file should go where the user wants, and if it's already there and of the right size we can avoid to create it again.
* vm-swap-file <filename>. The swap file should go where the user wants, and if it's already there and of the right size we can avoid to create it again.
* it should be possible to give the vm-max-memory option in megabyte, gigabyte, ..., just using 2GB, 100MB, and so forth.