  To meet the increasing requirements of synchrotron radiation users, the
upgrade project to enhance the performance of Hefei Light Source (HLS), named
HLS-II, was launched in 2010, and in 2014 the first commissioning of HLS-II was
successfully completed. After the commissioning, the main design goals for the
HLS-II storage ring have been achieved, with natural emittance of electron beam
lower than 40 nm-rad at 800 MeV, five insertion devices installed in straight
sections and root mean square (rms) jitter of closed orbit smaller than 4
{\mu}m, making HLS-II at a higher level among the same class of machines in the
world. This paper reports on the results of the commissioning of the HLS-II
storage ring, which includes linear optics correction, compensation of
insertion devices effect and closed orbit feedback.
