Measuring the performance of a library’s services is one of the most crucial parts of providing good services. The main objective of the study is to examine the perceptions of the DU residential hall library users as they relate to quality service and to determine how far the DU residential hall libraries have succeeded in delivering such service to its users. The primary data were directly collected from residential students of DU in three segments (desired service, minimum service, and perception) using the modified SERVQUAL questionnaire. Different types of measures were calculated as necessitated by the study. The outcome of the study shows that maximum service items fall short of meeting the user’s need. The study recommended also some exploratory guidelines for improving the present library performance.