I think this will need some rework to deal with the addition of GetNamedDSA() and GetNamedDSHash() [0]. We probably want to add a "type" column to show whether the entry is for a DSM, DSA, or dshash table. And for DSAs and dshash tables, we probably want to use dsa_get_total_size() for the "size" column.
[0] https://postgr.es/m/flat/aEC8HGy2tRQjZg_8@nathan -- nathan