1. An apparatus comprising:one or more data unpacker components, each data unpacker component configured to:
receive packed field data for data units;
receive compression profiles associated with the data units, each particular compression profile of the compression profiles identifying a particular set of fields and particular packed value lengths for at least some of the fields;
unpack the packed field data into values based on the compression profiles associated with the data units; and
output unpacked field data for the data units, the outputting comprising, for each particular data unit of the data units, outputting particular values unpacked for the particular set of fields identified by the particular compression profile associated with the particular data unit.