[openstack-dev] [Ceilometer] "Infinite" values for "sum" and "average" fields in statistics query

Srikanth Vavilapalli srikanth.vavilapalli at ericsson.com
Tue Oct 20 16:22:21 UTC 2015


Hi

I am using MongoDB backend.

Thanks
Srikanth

-----Original Message-----
From: gord chung [mailto:gord at live.ca] 
Sent: Tuesday, October 20, 2015 9:20 AM
To: openstack-dev at lists.openstack.org
Subject: Re: [openstack-dev] [Ceilometer] "Infinite" values for "sum" and "average" fields in statistics query

which backend are you using? this potentially may be a bug where we're hitting some size limit restricted by datatype.

On 19/10/2015 4:02 PM, Srikanth Vavilapalli wrote:
> Hi
>
> I have observed "inf" values for "sum" and "average" fields in a ceilometer statistics query on one of my custom meter as shown below. I have also verified the samples query for this meter and there are 1544 samples (output shown below) with all of them having value as "150.0". So ideally the "Avg" filed should be "150.0" in this scenario. Could anyone tell me in what scenario we will see these two fields as "inf" in the meter statistics query? Plz let me know if you need more details or logs here. Appreciate your help.
>
> Thanks
> Srikanth
>
>
> svavilap at ctl:/usr/lib/python2.7/dist-packages/ceilometer$ ceilometer 
> statistics --meter=vcpe.dns.cache.size
> +--------+----------------------------+----------------------------+-------+-------+-----+-----+-------+------------+----------------------------+----------------------------+
> | Period | Period Start               | Period End                 | Max   | Min   | Avg | Sum | Count | Duration   | Duration Start             | Duration End               |
> +--------+----------------------------+----------------------------+-------+-------+-----+-----+-------+------------+----------------------------+----------------------------+
> | 0      | 2015-10-17T01:30:24.999000 | 2015-10-19T17:47:20.587000 | 150.0 | 150.0 | inf | inf | 1544  | 231415.588 | 2015-10-17T01:30:24.999000 | 2015-10-19T17:47:20.587000 |
> +--------+----------------------------+----------------------------+-------+-------+-----+-----+-------+------------+----------------------------+----------------------------+
>
>
> svavilap at ctl:/usr/lib/python2.7/dist-packages/ceilometer$ ceilometer 
> sample-list --meter=vcpe.dns.cache.size
> +-------------+---------------------+-------+--------+---------+----------------------------+
> | Resource ID | Name                | Type  | Volume | Unit    | Timestamp                  |
> +-------------+---------------------+-------+--------+---------+----------------------------+
> | vcpe-170    | vcpe.dns.cache.size | gauge | 150.0  | entries | 2015-10-19T17:47:20.587000 |
> | vcpe-170    | vcpe.dns.cache.size | gauge | 150.0  | entries | 2015-10-19T17:47:00.048000 |
> | vcpe-170    | vcpe.dns.cache.size | gauge | 150.0  | entries | 2015-10-19T17:42:20.470000 |
> | vcpe-170    | vcpe.dns.cache.size | gauge | 150.0  | entries | 2015-10-19T17:41:59.921000 |
> | vcpe-170    | vcpe.dns.cache.size | gauge | 150.0  | entries | 2015-10-19T17:37:20.362000 |
> .
> .
> .
> | vcpe-170    | vcpe.dns.cache.size | gauge | 150.0  | entries | 2015-10-17T01:50:25.499000 |
> | vcpe-170    | vcpe.dns.cache.size | gauge | 150.0  | entries | 2015-10-17T01:45:46.255000 |
> | vcpe-170    | vcpe.dns.cache.size | gauge | 150.0  | entries | 2015-10-17T01:45:25.374000 |
> | vcpe-170    | vcpe.dns.cache.size | gauge | 150.0  | entries | 2015-10-17T01:40:46.131000 |
>
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--
gord


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