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Hi,

I was informed by our QA team, that Ceilometer is currently a single threaded application, so this might impact performance.

https://bugs.launchpad.net/ceilometer/+bug/1257329


-- 
Nick Maslov
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On February 21, 2014 at 1:54:38 PM, Alexander Stellwag (openstack at stellwag.net) wrote:

Hi Nadya,  

On 02/21/2014 12:27 PM, Nadya Privalova wrote:  
> I've investigated this question too. Here is a link on mailing thread  
> https://www.mail-archive.com/openstack-dev@lists.openstack.org/msg11196.html  

First of all, thanks for your reply.  

I've already read the thread you're mentioning above but my concern is  
not about instance creation but about the ceilometer-calls themselves.  

We've seen no negative affect on the creation time for instances (we  
haven't specifically looked at that) but simple calls to ceilometer  
("meter-list", ...) run into timeouts.  

The database itself looks good (performance-wise), it looks as if the  
API takes too long to respond but I'm not sure how to debug this further.  

Best  
Alex  

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