[one-users] Opennebula response time increasing

[Carlos Martín Sánchez]

Hi,

Can you share some more information about your scenario? Are you using
sqlite, or mysql? MySQL can drastically improve the performance over sqlite.

How are you querying OpenNebula, are you using the CLI, our ruby/java OCA?
The response time can be affected by the xml processing that the OCA has to
do. If you are using Ruby, it is crucial that you have the nokogiri gem
installed

Does the response time increase always over time, or is it related to the
number of existing VMs? If so, how many VMs does it take to make it
irresponsive?

Can you still see the xml-rpc requests in oned.log each second?

I'm trying to reproduce the problem, having over a 1000 running VMs. I'm
doing a onevm create & shutdown every 5 seconds while checking the time it
takes to do a onevm list each second, but can't see any response taking
more than one or two seconds.

Regards
--
Carlos Martín, MSc
Project Engineer
OpenNebula - The Open-source Solution for Data Center Virtualization
www.OpenNebula.org | cmartin at opennebula.org |
@OpenNebula<http://twitter.com/opennebula><cmartin at opennebula.org>



On Tue, Aug 28, 2012 at 1:40 PM, Christoph Robbert <chrobbert at googlemail.com
> wrote:

> Hello,
>
> I'm working on project with Opennebula 3.6 as cloudcontroller. We start
> and stop VMs via xml-rpc nearly every 15 seconds. To monitor the actions in
> realtime, i implemented a gui, which calls Opennebula every second via
> xml-rpc. Now i notice a real big increase of the response time after 10
> minutes. The response time increases from nearly 1 second to 5 Minutes.
> Some time i have to restart Opennebula because the response time increase
> to infinity.
> Could you give me a hind where i should start to trace the bottleneck in
> Opennebula?
>
>
> Best Regards,
>
> Christoph Robbert
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