Hi,<div><br></div><div>Can you share some more information about your scenario? Are you using sqlite, or mysql? MySQL can drastically improve the performance over sqlite.</div><div><br></div><div>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</div>
<div><br></div><div>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?</div><div><br></div><div>Can you still see the xml-rpc requests in oned.log each second?</div>
<div><br></div><div>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.</div>
<div><br></div><div>Regards<br clear="all">--<br>Carlos Martín, MSc<br>Project Engineer<br>OpenNebula - The Open-source Solution for Data Center Virtualization<div><span style="border-collapse:collapse;color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px"><a href="http://www.OpenNebula.org" target="_blank">www.OpenNebula.org</a> | <a href="mailto:cmartin@opennebula.org" target="_blank">cmartin@opennebula.org</a> | <a href="http://twitter.com/opennebula" target="_blank">@OpenNebula</a></span><span style="border-collapse:collapse;color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px"><a href="mailto:cmartin@opennebula.org" style="color:rgb(42,93,176)" target="_blank"></a></span></div>
<br>
<br><br><div class="gmail_quote">On Tue, Aug 28, 2012 at 1:40 PM, Christoph Robbert <span dir="ltr"><<a href="mailto:chrobbert@googlemail.com" target="_blank">chrobbert@googlemail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello,<br>
<br>
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.<br>
Could you give me a hind where i should start to trace the bottleneck in Opennebula?<br>
<br>
<br>
Best Regards,<br>
<br>
Christoph Robbert<br>
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</blockquote></div><br></div>