 "Rock Steady" peaked at number 16 in Italy and spent a total of four weeks in the chart.On 12 November 2006, "Rock Steady" debuted and peaked at number 10 in Spain, spending a total of three weeks on the chart.In Switzerland, it debuted at number 40 on 3 December 2006, later peaking at number 37 for two weeks, spending a total of 11 weeks on the chart.