Starting with AIX 6.1 TL08 and AIX 7.1 TL02 there’s a new AIX CPU tuning feature called “ Scaled Throughput ” mode. This is supported on POWER7 and POWER7+ processors only ( do not try this on POWER6!). This new mode has the ability to dispatch workload to more SMT threads per VP, avoiding the need to unfold additional VPs. I’ve heard it described as being more “POWER6 like”. I’m not suggesting that you use this feature. This post simply discusses what this new mode can do.   By default AIX (on POWER7) operates in “ Raw Throughput” mode.... [More]

Tags:  smt chris_gibson scaled_throughput aix power7 vpm_throughput_mode