Maximum length of a time series in Prometheus

[Abdelouahab Khelifati]

Hello, 

Is there a hard maximum length limit of a time series in Prometheus? 

Best,

Abdel 

[Stuart Clark]

On 2023-03-27 14:07, Abdelouahab Khelifati wrote:
> Hello,
>
> Is there a hard maximum length limit of a time series in Prometheus?
>

There is probably something around 64 bit numbers, but as that is a very
large number I don't think there is anything specific limiting things
other than memory/disk.

--
Stuart Clark

[Abdelouahab Khelifati]

I mean the maximum number of datapoints per time series, not the length of a specific value. 

Thanks!

Abdel 

[Stuart Clark]

On 2023-03-27 14:10, Abdelouahab Khelifati wrote:
> I mean the maximum number of datapoints per time series, not the
> length of a specific value.

Sorry that is what I was meaning.

There will be loads of resource or performance limitations - such as not
being able to load the data for very long periods of time without huge
amounts of memory. However in the normal usage of scrapes around every
30 seconds there are people who have multi-year storage retentions that
work successfully (so that would be around a million datapoints per
year).

--
Stuart Clark

[Ben Kochie]

Prometheus timestamps are in int64 (signed) milliseconds. So the maximum number of data points per series is: 9,223,372,036,854,775,807

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[Ben Kochie]

Although, I haven't actually checked to see if negative timestamps are supported.