Thanks, my actual strategy is using SolrMeter to test with real Virtualized hardware and real result set to gain some number. The customer definitively wants virtualization, and probably we will not test on bare metal installation.
As I state in previous mail, the question arise because in some books / blog, people suggest to avoid virtualization, and even if I know that a virtualized hardware is slower than bare metal, usually the loss of performance is negligible, so I wander if there are some proof of concepts to back up these hypothesis. As I suspected, probably that is a general advice, but it is always safer to have a proof of concept on your hardware and data. Thanks. -- Gian Maria Ricci Cell: +39 320 0136949 -----Original Message----- From: Davis, Daniel (NIH/NLM) [C] [mailto:daniel.da...@nih.gov] Sent: giovedì 21 gennaio 2016 16:32 To: solr-user@lucene.apache.org Subject: RE: Couple of question about Virtualization and Load Balancer > The first one is about virtualization, I'd like to know if there are > any official test on loss of performance in virtualization > environment. I think that the loss of performance is negligible, and > quick question on test infrastructure is confirming this, but I'd like to know if there is some official numbers on this. I think any "official" test would run into the very reasonable problem of which schema, indexed data, and queries to test. This problem is well summarized by https://lucidworks.com/blog/2012/07/23/sizing-hardware-in-the-abstract-why-w e-dont-have-a-definitive-answer/. However, there is a Solr performance test tool with a track record - SolrMeter<https://github.com/tflobbe/solrmeter/blob/wiki/Usage.md>. You can also do a lot with good old JMeter. From: outlook_288fbf38c031d...@outlook.com [mailto:outlook_288fbf38c031d...@outlook.com] On Behalf Of Gian Maria Ricci - aka Alkampfer Sent: Thursday, January 21, 2016 6:38 AM To: solr-user@lucene.apache.org Subject: Couple of question about Virtualization and Load Balancer Hi, I've a coupl e of quick question about production setup. The second question is about Load Balancer: any clue on how to automatically change the configuration on the load balancer if some of the node goes down? I'm looking to advices on what to monitor, the simplest solution could be issuing some test query and verify if the node is able to answer, but it would be nice to know if there are some standard metrics to monitor to proactively alert. (Es. Heap size almost full, so it would be probably better to remove the node from the balancer and alert a human to have a look at the status of the node). Many thanks. -- Gian Maria Ricci Cell: +39 320 0136949 [https://ci5.googleusercontent.com/proxy/5oNMOYAeFXZ_LDKanNfoLRHC37mAZkVVhkP N7QxMdA0K5JW2m0bm8azJe7oWZMNt8fKHNX1bzrUTd-kIyE40CmwT2Mlf8OI=s0-d-e1-ft#http ://www.codewrecks.com/files/signature/mvp.png]<http://mvp.microsoft.com/en-u s/mvp/Gian%20Maria%20Ricci-4025635> [https://ci3.googleusercontent.com/proxy/f-unQbmk6NtkHFspO5Y6x4j lIf_xrmGLUT3fU9y_7VUHSFUjLs7aUIMdZQYTh3eWIA0sBnvNX3WGXCU59chKXLuAHi2ArWdAcBc lKA=s0-d-e1-ft#http://www.codewrecks.com/files/signature/linkedin.jpg] <http://www.linkedin.com/in/gianmariaricci> [https://ci3.googleusercontent.com/proxy/gjapMzu3KEakBQUstx_-cN7gHJ_GpcIZNEP jCzOYMrPl-r1DViPE378qNAQyEWbXMTj6mcduIAGaApe9qHG1KN_hyFxQAIkdNSVT=s0-d-e1-ft #http://www.codewrecks.com/files/signature/twitter.jpg] <https://twitter.com/alkampfer> [https://ci5.googleusercontent.com/proxy/iuDOD2sdaxRDvTwS8MO7-CcXchpNJX96uaW uvagoVLcjpAPsJi88XeOonE4vHT6udVimo7yL9ZtdrYueEfH7jXnudmi_Vvw=s0-d-e1-ft#http ://www.codewrecks.com/files/signature/rss.jpg] <http://feeds.feedburner.com/AlkampferEng> [https://ci6.googleusercontent.com/proxy/EBJjfkBzcsSlAzlyR88y86YXcwaKfn3x7yd AObL1vtjJYclQr_l5TvrFx4PQ5qLNYW3yp7Ig66DJ-0tPJCDbDmYAFcamPQehwg=s0-d-e1-ft#h ttp://www.codewrecks.com/files/signature/skype.jpg]
