Dashboards & Visualizations

Sparkline maximum data points?

MonkeyK
Builder

I recently noticed that my sparklines may appear to lose data when I make the resolution too fine. For example over the course of a days data, sparkline(sum(count),1h) as countTrend1h will represent the trend OK, but sparkline(sum(count),5m) as countTrend5m will show only part of the results. I think that this is because at a resolution of 1hour, I have only 24 datapoints, while a resolution of 5m has 288.

What is the maximum number of datapoints that Splunk can reasonable handler in a sparkline? Also, is there a way to deal with it if I inadvertently exceed that number of data points? alt text

0 Karma
1 Solution

gergelybata
Explorer

Sparklines can have 101 data points maximum.
In fact, sparkline generates a multivalue field with a special "header", something like this:

##__SPARKLINE__##,113,322,275,334,314,284,...

So you can use every mv.... command on these fields, e.g. mvcount(countTrend5m)

View solution in original post

lstewart_splunk
Splunk Employee
Splunk Employee

You can generate sparkline charts with the tstats command only if you specify the _time field in the BY clause and use the stats command to generate the actual sparkline.

For example:

| tstats count from datamodel=Authentication.Authentication BY _time, Authentication.src span=1h | stats sparkline(sum(count),1h) AS sparkline, sum(count) as count BY Authentication.src

Also, I don't know if the limit suggested is accurate. When you run the following command, you get many more data points than 101 which are charted:

index=_internal | chart sparkline count by sourcetype
0 Karma

gergelybata
Explorer

Sparklines can have 101 data points maximum.
In fact, sparkline generates a multivalue field with a special "header", something like this:

##__SPARKLINE__##,113,322,275,334,314,284,...

So you can use every mv.... command on these fields, e.g. mvcount(countTrend5m)

Get Updates on the Splunk Community!

Using Machine Learning for Hunting Security Threats

WATCH NOW Seeing the exponential hike in global cyber threat spectrum, organizations are now striving more for ...

New Learning Videos on Topics Most Requested by You! Plus This Month’s New Splunk ...

Splunk Lantern is a customer success center that provides advice from Splunk experts on valuable data ...

How I Instrumented a Rust Application Without Knowing Rust

As a technical writer, I often have to edit or create code snippets for Splunk's distributions of ...