We have ganglia on IBM p55 (2x2 CPU) installed (8 lpars, aix5.3). In ganglia this machine is defined as ganglia cluster, lpars are nodes. It works well, but I have doubts about its usefulness on lpars, especially in CPU monitoring.
Metrics like cpu_[user|wait|system|idle] and graph "CPU last our" are wrong both in shared and dedicated environment. I can understand why it's wrong in shared CPU. But I don't know why is that with dedicated CPU ? I can see different values with ganglia and nmon. I.e: LPAR1 : 2 dedicated CPU, usage around 30% of (2) CPU for 2 hours (topas). Ganglia (CPU last hour) shows : 15 % nmon (physical avg) : 25 % - which is true I think . 1. Why is that ? 2. "CPU total" shows 32 . I think it shows 8 (lpar) x 4, but this is not the real number of CPU. Can I change it ? 3. Which metrics do you monitor in shared CPU environment ? Which are reliable ? regards ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Ganglia-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ganglia-general
