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On 04/09/2015 02:40 PM, Timur Sufiev wrote:
> Hello!
> 
> While analyzing Horizon behavior on a large scale we faced some performance
> issues which are most probably caused by inefficient calls to Nova API from
> Horizon, more specifically described at
> https://bugs.launchpad.net/nova/+bug/1442310
> 
> Since my knowledge of Nova existing APIs is not very comprehensive I am not
> quite sure whether current Nova API indeed doesn't support requesting the
> details of a multiple instances limited by their <instance_id>-s (passed as
> part of `search_opts` parameter) or I just failed to find the proper REST
> call at http://developer.openstack.org/api-ref-compute-v2.1.html
> 
> Nova developers, could you please help me on that matter?

I recommend not trying to do any of that - but instead doing a 'list' to
get the entire set of data and then filtering out the things you don't
want client side.