H5P_SET_LINK_PHASE_CHANGE sets the maximum number of entries for a compact group and the minimum number of links to allow before converting a dense group to back to the compact format. max_compact is the maximum number of links to store as header messages in the group header as before converting the group to the dense format. Groups that are in compact format and in which the exceed this number of links rises above this threshold are automatically converted to dense format.
min_dense is the minimum number of links to store in the dense format. Groups which are in dense format and in which the number of links falls below this threshold are automatically converted to compact format.
See Group implementations in HDF5 in the H5G API introduction for a discussion of the available types of HDF5 group structures. |