Commissioning of the ATLAS high-performance b-tagging algorithms in the 7 TeV collision data

The ability to identify jets containing $b$-hadrons is important for the high-pT physics program of a general-purpose experiment at the LHC such as ATLAS. Building on the success of the swift commissioning of two robust algorithms used already for several analyses of the 2010 data,the commissioning of the more advanced $b$-tagging algorithms with the 2011 data is described, as well as the improvements in performance to expect.