Comment 5 for bug 1479090

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Andrew Woodward (xarses) wrote : Re: UI and API are unreachable during 5 minutes (50 nodes deploy) and for 2.5 hours (if 200 nodes are deployed)

I was able to reproduce non-linear scaling on fake UI with 8 nodes

test with 0 - 8 nodes http://paste.openstack.org/show/406322/

nodes time derivative time per node
0 475 0 0
1 1075 600 600
2 1793 718 659
3 2643 850 722.6666666667
4 3788 1145 828.25
5 4706 918 846.2
6 6313 1607 973
7 8431 2118 1136.5714285714
8 10498 2067 1252.875

(times in msec)

there is a clear coloration in the number of nodes, and how long the serializer takes to finish returning the data.