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Charts

Memfault charts allow you to proactively monitor any smart device, anywhere. Monitor your releases and view data-driven device and fleet-level metrics, like battery health, connectivity, and more in real-time dashboards.

Overview Dashboard#

The Overview Dashboard offers a selection of charts that provide an outlook of the state of your fleet at a glance. To open it, go to Dashboards -> Overview.

Active Devices and Software Versions of your fleet in the Memfault Overview Dashboard Active Devices and Software Versions of your fleet in the Memfault Overview Dashboard.

You can filter the data in the Overview Dashboard by Cohort by selecting one in the drop-down menu in the top-right corner of the page. You can also toggle the scope of the data between Weekly and Daily on the top-right corner of each chart.

Drilldown#

Overview Dashboard charts that have a Drilldown badge on them can be clicked on sections of the chart (and sometimes also on labels) to go to a filtered-down list of Devices that make up the data for that interval.

The drilldown feature of some Memfault Overview Dashboard charts Clicking on this section will give you a list of devices that rebooted on November 12th due to a user reset.

The drilldown feature of some Memfault Overview Dashboard charts Clicking on the label will give you a list of devices that rebooted on November 12th for any reason.

Metric Charts#

Memfault indexes and aggregates the metrics collected by your devices to provide you not only with insights of how individual devices are performing, but also the emergent behavior of your entire fleet.

You can add charts to visualize these aggregated, fleet-wide metrics by navigating to the sidebar and selecting Dashboards and then Metrics.

Creating a new chart is as simple as clicking Create Chart, selecting your metric of interest, and choosing the desired aggregation type. Note that only metrics configured as Timeseries can be used in Metric Charts.

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The list of metrics available in your project is automatically created from the metrics collected by your devices. For that reason, at least one device must upload data for a given metric before a chart for that metric can be created.

The aggregation of the metrics is done periodically, usually every few hours. To refresh the data inside a chart immediately, click the refresh button in the chart itself.

For more information about adding metrics to your devices:

Filtering Metric Charts#

You can filter the values visible in the charts by selecting from the available filters on the top-right area of the page:

Metric Chart Comparison Mode#

To compare the values of different sets of Devices, you can click the Compare button next to the filters section on the top-right area of the page to add a new colorized selection to the filters as well as the charts:

When comparing Metric Charts, bear in mind that the aggregations Count and Sum lead to absolute values that are a function of the number of Devices reporting the given value. When visualizing absolute values for different sets of Devices, the resulting chart could be misleading as the underlying number of Devices per set may vary.