Actually I made a mistake in my explanation regarding the maximum number of virtual processors... Sorry for that...
Edited: (2) Is the number of online virtual processors. The maximum numer of virtual processors, however, is a specific limitation by the model (and the number of CPUs it contains). F.e. my 570+ has 16 processors and each LPAR can define a maximum of 64 virtual processors. So what ganglia reports does represent the number of allocated/online virtual CPUs. It would be more interesting to show the used entitlements instead. Miguel SANDERS ArcelorMittal Gent UNIX System Administrator | SAP Infrastructure Group John Kennedylaan 51, B-9042 Gent T +32 9 347 3538 | F +32 9 347 4901 | M +32478 805 023 E [EMAIL PROTECTED] www.arcelormittal.com/gent -----Oorspronkelijk bericht----- Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Namens kmet Gazeta.pl Verzonden: dinsdag 17 juni 2008 14:45 Aan: [email protected] Onderwerp: [Ganglia-general] ganglia and IBM power virtualisation 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. We use power awere gmond's (3.0.7) and gmetad (3.0.7) is installed one of lpars. 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 **** This message and any attachment are confidential, intended solely for the use of the individual or entity to whom it is addressed and may be protected by professional secrecy or intellectual property rights. If you have received it by mistake, or are not the named recipient(s), please immediately notify the sender and delete the message. You are hereby notified that any unauthorized use, copying or dissemination of any or all information contained in this message is prohibited. Arcelormittal shall not be liable for the message if altered, falsified, or in case of error in the recipient. This message does not constitute any right or commitment for ArcelorMittal except when expressly agreed otherwise in writing in a separate agreement. **** ------------------------------------------------------------------------- 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
