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Interact with charts

While charts that update every second with new metrics are helpful for understanding the immediate state of a node, deep troubleshooting and root cause analysis begins by manipulating the default charts. To help you troubleshoot, Netdata synchronizes every chart every time you interact with one of them.

Here's what synchronization looks like:

Animated GIF of the standard Netdata dashboard being manipulated and synchronizing
charts

Once you understand all the interactions available to you, you'll be able to quickly move around the dashboard, search for anomalies, and find root causes using per-second metrics.

Pause or stop#

InteractionKeyboard/mouseTouchpad/touchscreen
Pause a charthovern/a
Stop a chartclicktap

By hovering over any chart, you temporarily pause it so that you can hover over a specific timeframe and see the exact values presented as dimensions. Click on the chart to lock it to this timeframe, which is useful if you want to jump to a different chart to look for possible correlations.

Animated GIF of hovering over a chart to see
values

Pan#

InteractionKeyboard/mouseTouchpad/touchscreen
Panclick + dragswipe

Drag your mouse/finger to the right to pan backward through time, or drag to the left to pan forward in time. Think of it like pushing the current timeframe off the screen to see what came before or after.

Zoom#

InteractionKeyboard/mouseTouchpad/touchscreen
Zoom in or outShift + mouse scrollwheeltwo-finger pinch
Shift + two-finger scroll
Zoom to a specific timeframeShift + mouse selectionn/a

Zooming in helps you see metrics with maximum granularity, which is useful when you're trying to diagnose the root cause of an anomaly or outage. Zooming out lets you see metrics within the larger context, such as the last hour, day, or week, which is useful in understanding what "normal" looks like, or to identify long-term trends, like a slow creep in memory usage.

Select#

InteractionKeyboard/mouseTouchpad/touchscreen
Select a specific timeframeAlt + mouse selection or โŒ˜ + mouse selection (macOS)n/a

Selecting timeframes is useful when you see an interesting spike or change in a chart and want to investigate further.

Select a timeframe, then move to different charts/sections of the dashboard. Each chart shows the same selection to help you immediately identify the timeframe and look for correlations.

Reset a chart to its default state#

InteractionKeyboard/mouseTouchpad/touchscreen
Reset a chartdouble-clickn/a

Double-check on a chart to restore it to the default auto-updating state, with a timeframe based on your browser viewport.

Resize#

Click-and-drag the icon on the bottom-right corner of any chart. To restore the chart to its original height, double-click the same icon.

Animated GIF of resizing a chart and resetting it to the default
height

Show and hide dimensions#

InteractionKeyboard/mouseTouchpad/touchscreen
Show one dimension and hide othersclicktap
Toggle (show/hide) one dimensionShift + clickn/a

Hiding dimensions simplifies the chart and can help you better discover exactly which aspect of your system might be behaving strangely.

See the context#

Hover your mouse over the date that appears just beneath the chart itself. A tooltip will tell you the context for that chart. Below, the context is apps.cpu.

See a chart's
context

See the resolution and update frequency#

Hover your mouse over the timestamp just to the right of the date. resolution is the number of seconds between each "tick" in the chart. collection every is how often Netdata collects and stores that metric.

If the resolution value is higher than collection every, such as resolution 5 secs, collected every 1 sec, this means that each tick is calculating represents the average values across a 5-second period. You can zoom in to increase the resolution to resolution 1 sec to see the exact values.

Chart controls#

Many of the above interactions can also be triggered using the icons on the bottom-right corner of every chart. They are, respectively, Pan Left, Reset, Pan Right, Zoom In, and Zoom Out.

What's next?#

We recommend you read up on the differences between chart dimensions, contexts, and families to complete your understanding of how Netdata organizes its dashboards. Another valuable way to interact with charts is to use the timeframe selector, which helps you visualize specific moments of historical metrics.

If you feel comfortable with the dashboard and interacting with charts, we recommend moving on to learning about configuration. While Netdata doesn't require a complicated setup process or a query language to create charts, there are a lot of ways to tweak the experience to match your needs.

Reach out

If you need help after reading this doc, feel free to create an issue in the netdata/netdata repo or join our community forum to search for an answer. There's a good chance someone else has already found a solution to the same issue.

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