Actually the 2 backends are collocated on the same machine with the controller precisely because I'm in testing mode. My final goal is to compare the performance of different cluster architecture without being impacted by some external noise.
With my sequoia architecture, as I explained, I still noticed very slow responses, even if all my nodes are located on the same machine. So I don't think it will be better through the network... That's why I would like to improve it now before involving myself into a much more complex architecture. Thanks and Regards, gaël On Thu, Jun 26, 2008 at 5:41 PM, Emmanuel Cecchet <[EMAIL PROTECTED]> wrote: > Hi Gael, > >> 1 controller, 2 backends (MySQL 5.1) and 1 recovery (MySQL 5.1) >> > You don't need group communication with a single controller. The > performance might be altered by the way the group communication handles > loopback delivery. > >> I can start the controller and enable the backends. I can also access the >> cluster and perform some queries. Items appeared on the backends. Everything >> seems to work fine. >> >> However, I noticed bad performances, especially for insertion queries. A >> simple insertion in a virtual database takes about 0.500 s. >> >> Does anybody already notice that kind of measures? I'm looking for a way >> to optimize these queries. I tried different appia configurations, but I >> wasn't able to find one which correspond to what I expected. >> > From your config file it looks like the 2 backends are collocated on the > same machine with the controller. This probably defeats the purpose of both > performance scalability and availability, so I don't know how relevant > performance measurements on such configuration could be. We usually use such > config for testing only (mostly functional) but not for performance. > > Don't hesitate to keep us posted with your findings, > Emmanuel > > -- > Emmanuel Cecchet > FTO @ Frog Thinker Open Source Development & Consulting > -- > Web: http://www.frogthinker.org > email: [EMAIL PROTECTED] > Skype: emmanuel_cecchet > > _______________________________________________ > Sequoia mailing list > [email protected] > https://forge.continuent.org/mailman/listinfo/sequoia >
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