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Display VCPU affinity with PowerVP
This post introduces two new features that I came across recently and found rather interesting. The first relates to PowerVP (VCPU affinity) and the second to POWER8 (Flexible SMT). I’m particularly impressed by this new feature in PowerVP version 1.1.2 (SP1). You can view CPU and memory affinity information directly from the PowerVP GUI. From the PowerVP Installation and User Guide: “If you go to the View menu and select the Display CPU affinity information, the CPU utilization information will be replaced in... [More]
Tags: flexible powervm 1.1.2 aix vcpu smt powervp gibson power8 chris affinity |
Testing "Scaled Throughput" mode with AIX 7.1 on POWER7.
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 aix vpm_throughput_mode scaled_throughput chris_gibson power7 |
AIX SMT mode on POWER9 with AIX 7.2 TL3 SP1
OK, so you installed AIX 7.2 TL2 SP2 on an LPAR running on your shiny, new POWER9 system. # oslevel -s 7200- 02-02 -1810 # lsconf System Model: IBM,9009-22A Machine Serial Number: 9999999 Processor Type: PowerPC_POWER9 Processor Implementation Mode: No Data Available Processor Version: No Data Available Number Of Processors: 2 Processor Clock Speed: 2500 MHz CPU Type: 64-bit Kernel Type: 64-bit LPAR Info: 48 l0790p046 Memory Size: 4096 MB Good Memory Size: 4096 MB Platform Firmware level: VL910_059 Firmware Version: IBM,FW910.00... [More]
Tags: mode on cgibson with tl3 power9 chris smt 7.2 lparstat gibson sp1 lsconf aix smtctl cgaix |
