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Local, Near & Far Memory part 2 - Virtual Machine CPU & Memory Lay Out
So you know about Power7 Local, Near and Far memory for your actual machine but what is your Virtual Machine (LPAR) actually using? There are three key commands to show you (lssrad, mpstat and topas) and we will look at some example output. First, we need to define an SRAD or a Scheduler Resource Affinity Domain . If you have used Resource Sets with AIX WLM or WPAR then you have a good idea what these are like. An SRAD is a group of resources but in our case CPU/cores and the associated memory that is directly attached to it. As an... [More]
Tags: lssrad topas affinity srad mpstat powervm aix6 power7 resource aix7 domain scheduler |
nmon - new online Physical CPU Graphs arrive for latest AIX 6.1
I have just upgraded my EMEA Power Systems Advanced Technical Support internal Wiki Apache Web-server to the very latest AIX level, which is AIX 6.1 Technology Level 6 Service Pack 5 or AIX6.1TL6sp5 for short! Then I noticed that the nmon at this AIX level has been updated - I worked the code for the internal prototype of this new feature some time ago and it has arrived in the official topas/nmon code at this release - C O O L . The latest release AIX 7.1 service pack has this new options too. The problem: As the numbers of CPU goes up with... [More]
Tags: power6 power7 tl06 6.1 sp5 aix monitoring topas nmon physical cpu |
Over enthusiastic PM for AIX service = could annoy administrators!
We have had the Global Services offering "Performance Management for AIX" server for years (even decades) - it gets shorten to "PM for AIX" or "PM for Power Systems" which sounds like a "Prime Minister for the Electricity Board" to English people! Anyway, briefly this offers: PM collects local AIX stats and configuration details, then sends the information to IBM over a secure Internet link to be analysed. The results includes performance graphs, performance trends, config reports and warnings about... [More]
Tags: management recording performance tl06 topas aix 6.1 smitty pm |
Whole Power Server + Virtual Server Monitoring - Part 3 via topas CEC analyser
We have all probably seen or used the topas CEC on-screen view (topas -C command). This is started while logged into one AIX Virtual Server (LPAR) and shows all the other AIX or VIOS (as it is based on AIX) Virtual Servers of a single Power Server. Here is a reminder - this is on-line, on-screen and updated every 10 seconds or so: Here my Virtual Servers are called purple<something> and below the top machine summary we have a line for each Virtual Server and stats like AIX release, memory use, CPU stats (PhysB is the Physical CPU time... [More]
Tags: power virtual server systems aix lpar power7 monitoring topas performance |
