Comment 16 for bug 1264434

there were additional commits that were not included/backported to icehouse.

in icehouse, we had a fundamental design issue in our sql backend which made read and writes very slow. in juno we worked to simplify the sql backend. some performance values can be found here: https://tank.peermore.com/tanks/cdent-rhat/DatabasePerfTest.

i'm adding python-ceilometerclient because i believe technically, the original performance boost which includes skipping the generation of related meters is not enabled in client and can improve performance further.