Experience of Pragmatically Combining RE Methods for Performance Requirements in Industry. Proceedings of the 22nd IEEE International Requirements Engineering Conference (RE), 344--353, August 2014. [PUMA: engineering;performance domain;software specification;Adaptation specifications;industrial factors architecture;PROPRE;RE methods;architecture engineering methods;performance performance testing;software specification;program formal automation expectations;functional development;system setting;nonfunctional elicitation;performance context models;end-user requirements testing;process models;Context;Documentation;Measurement;Testing;Throughput;Time]