[openstack-dev] [Monasca] GridDB repository support

witold.bedyk at est.fujitsu.com witold.bedyk at est.fujitsu.com
Mon Aug 28 13:35:28 UTC 2017


> -----Original Message-----
> From: Julien Danjou [mailto:julien at danjou.info]
> Sent: Dienstag, 22. August 2017 15:50
> To: Bedyk, Witold <witold.bedyk at est.fujitsu.com>
> Cc: OpenStack Development Mailing List (not for usage questions)
> <openstack-dev at lists.openstack.org>
> Subject: Re: [openstack-dev] [Monasca] GridDB repository support

<snip>

> We don't have any recent comparison with InfluxDB but last time we tried,
> Gnocchi was already getting faster than it. And scalable horizontally, so…


Hi Julien,

Can you give some reference to Gnocchi's performance measurements?
I have seen you presentation from the last Summit [1] but I cannot find information about Gnocchi's write throughput. In the issues slide you note the slow post API. The API responsiveness test shows that the API can handle correctly up to 2500 instances. You collect around 60 metrics per instance and use polling interval of 10 minutes. That would translate to:

2500 instances * 60 metrics/instance / 600 s = 250 metrics/s

Are these assumptions correct?

Best greetings
Witek


[1] https://julien.danjou.info/talks/OpenStack_Telemetry_and_the_10000_Instances.pdf


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