Sentence:  a long <WSD>time</WSD>;  Record the individual <WSD>times</WSD> for the processes in each batch.   Only your best <WSD>time</WSD> is compared with the other competitors.   The algorithm runs in O(n2) <WSD>time</WSD>. 
Meaning of the word marked with <WSD> tags:  A measurement of a quantity of time; a numerical or general indication of a length of progression.