# Feasability of migrating to dashboard 2.0

**URL:** <https://discourse.nodered.org/t/feasability-of-migrating-to-dashboard-2-0/101298>\
**Category:** Dashboard\
**Created:** [17 June 2026 19:35 UTC](https://discourse.nodered.org/t/feasability-of-migrating-to-dashboard-2-0/101298 "2026-06-17T19:35:13Z")\
**Posts on this page:** 2\
**Page:** 3

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [27 June 2026 08:44 UTC](https://discourse.nodered.org/t/feasability-of-migrating-to-dashboard-2-0/101298/41 "2026-06-27T08:44:26Z")

</div>

I have replicated the problem and submitted an issue.

> <https://github.com/FlowFuse/node-red-dashboard/issues/2151>
>
> \### Current Behavior
> 
> If messages passed to the ui-chart node include significan…t amounts of additional data then the node red process uses an increasing amount of CPU time as the number of data points on the chart increases.
> For the example flow below, running node-red on an Intel i7, initially node-red shows about 2% usage. The flow injects a message each second, and over about 20 mins the CPU slowly increases to around 8%. Stopping the incoming messages immediately drops the CPU usage back to 2%, and releasing them again switches it back to 8%. Obviously, using 6% of an i7 core on just buffering up messages is ridiculous.
> 
> It is not a browser related issue as the symptom can be seen even if there is no browser open.
> 
> The fact that it increases slowly means that it not to do with rolling the message buffer as it is not necessary for the buffer to be full.
> 
> The message is significant but not huge, this is the function generating it
> \`\`\`
> msg = {
> "payload": -433,
> "topic": "M3 (Measured)",
> "mac": "3C1ACCBAA19D",
> "data\_type": "int16",
> "property": "battery\_power",
> "communication\_status": "operational",
> "scale": 1,
> "unit": "W",
> "precision": 1,
> "friendly\_name": "Battery Power",
> "device\_class": "power",
> "state\_class": "measurement",
> "entry\_type": "SENSOR\_DEFINITIONS",
> "\_msgid": "16df34e86e841df2",
> "messageId": "6a3d7abd40cb157a90acc984",
> "modbusRequest": {
> "unitid": 1,
> "fc": 3,
> "address": 30001,
> "quantity": 1,
> "emptyMsgOnFail": true,
> "keepMsgProperties": true,
> "enableDeformedMessages": false,
> "messageId": "6a3d7abd40cb157a90acc984"
> },
> "responseBuffer": {
> "data": \[
> 65103
> \],
> "buffer": \[
> 254,
> 79
> \]
> },
> "parse\_buffer": \[
> 254,
> 79
> \],
> "specification": {
> "options": {
> "byteSwap": false,
> "resultType": "keyvalue",
> "singleResult": true,
> "msgProperty": "translated\_payload",
> "setTopic": true
> },
> "items": \[
> {
> "name": "value",
> "type": "int16be",
> "offset": 0,
> "length": 1,
> "mask": "",
> "scale": "1",
> "offsetbit": 0,
> "id": 0,
> "value": -433
> }
> \]
> },
> "originalPayload": \[
> 65103
> \],
> "values": \[
> -433
> \],
> "objectResults": {
> "value": {
> "name": "value",
> "type": "int16be",
> "offset": 0,
> "length": 1,
> "mask": "",
> "scale": "1",
> "offsetbit": 0,
> "id": 0,
> "value": -433
> }
> },
> "keyvalues": {
> "value": -433
> },
> "arrayResults": \[
> {
> "name": "value",
> "type": "int16be",
> "offset": 0,
> "length": 1,
> "mask": "",
> "scale": "1",
> "offsetbit": 0,
> "id": 0,
> "value": -433
> }
> \],
> "buffer": \[
> 254,
> 79
> \],
> "translated\_payload": {
> "value": -433
> },
> "\_event": "node:53ebc095797a50fc"
> }
> msg.payload = Math.floor(Math.random() \* (2000 - (-1000) + 1)) + (-1000);   
> return msg;
> \`\`\`
> 
> Adding a node in front of the chart which moves just the payload and topic into a new message and passing that to the chart stops the issue from occurring.
> 
> The problem was identified by a user in forum post https://discourse.nodered.org/t/feasability-of-migrating-to-dashboard-2-0/101298.
> 
> I am investigating to find which part of the code is using up the CPU.
> 
> \### Expected Behavior
> 
> \_No response\_
> 
> \### Steps To Reproduce
> 
> Run this flow and watch the node-red CPU usage over about 20 minutes.
> \`\`\`
> \[{"id":"c12532a704294d5c","type":"group","z":"997da33a0beedade","name":"Chart CPU test. Issue #2151","style":{"label":true},"nodes":\["893419d21d52a0f3","392c75611b71aaa9","1a80648df0d6abfd"\],"x":74,"y":4659,"w":692,"h":82},{"id":"893419d21d52a0f3","type":"inject","z":"997da33a0beedade","g":"c12532a704294d5c","name":"","props":\[{"p":"payload"},{"p":"topic","vt":"str"}\],"repeat":"1","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":190,"y":4700,"wires":\[\["392c75611b71aaa9"\]\]},{"id":"392c75611b71aaa9","type":"function","z":"997da33a0beedade","g":"c12532a704294d5c","name":"Create object","func":"msg = {\\n \\"payload\\": -433,\\n \\"topic\\": \\"M3 (Measured)\\",\\n \\"mac\\": \\"3C1ACCBAA19D\\",\\n \\"data\_type\\": \\"int16\\",\\n \\"property\\": \\"battery\_power\\",\\n \\"communication\_status\\": \\"operational\\",\\n \\"scale\\": 1,\\n \\"unit\\": \\"W\\",\\n \\"precision\\": 1,\\n \\"friendly\_name\\": \\"Battery Power\\",\\n \\"device\_class\\": \\"power\\",\\n \\"state\_class\\": \\"measurement\\",\\n \\"entry\_type\\": \\"SENSOR\_DEFINITIONS\\",\\n \\"\_msgid\\": \\"16df34e86e841df2\\",\\n \\"messageId\\": \\"6a3d7abd40cb157a90acc984\\",\\n \\"modbusRequest\\": {\\n \\"unitid\\": 1,\\n \\"fc\\": 3,\\n \\"address\\": 30001,\\n \\"quantity\\": 1,\\n \\"emptyMsgOnFail\\": true,\\n \\"keepMsgProperties\\": true,\\n \\"enableDeformedMessages\\": false,\\n \\"messageId\\": \\"6a3d7abd40cb157a90acc984\\"\\n },\\n \\"responseBuffer\\": {\\n \\"data\\": \[\\n 65103\\n \],\\n \\"buffer\\": \[\\n 254,\\n 79\\n \]\\n },\\n \\"parse\_buffer\\": \[\\n 254,\\n 79\\n \],\\n \\"specification\\": {\\n \\"options\\": {\\n \\"byteSwap\\": false,\\n \\"resultType\\": \\"keyvalue\\",\\n \\"singleResult\\": true,\\n \\"msgProperty\\": \\"translated\_payload\\",\\n \\"setTopic\\": true\\n },\\n \\"items\\": \[\\n {\\n \\"name\\": \\"value\\",\\n \\"type\\": \\"int16be\\",\\n \\"offset\\": 0,\\n \\"length\\": 1,\\n \\"mask\\": \\"\\",\\n \\"scale\\": \\"1\\",\\n \\"offsetbit\\": 0,\\n \\"id\\": 0,\\n \\"value\\": -433\\n }\\n \]\\n },\\n \\"originalPayload\\": \[\\n 65103\\n \],\\n \\"values\\": \[\\n -433\\n \],\\n \\"objectResults\\": {\\n \\"value\\": {\\n \\"name\\": \\"value\\",\\n \\"type\\": \\"int16be\\",\\n \\"offset\\": 0,\\n \\"length\\": 1,\\n \\"mask\\": \\"\\",\\n \\"scale\\": \\"1\\",\\n \\"offsetbit\\": 0,\\n \\"id\\": 0,\\n \\"value\\": -433\\n }\\n },\\n \\"keyvalues\\": {\\n \\"value\\": -433\\n },\\n \\"arrayResults\\": \[\\n {\\n \\"name\\": \\"value\\",\\n \\"type\\": \\"int16be\\",\\n \\"offset\\": 0,\\n \\"length\\": 1,\\n \\"mask\\": \\"\\",\\n \\"scale\\": \\"1\\",\\n \\"offsetbit\\": 0,\\n \\"id\\": 0,\\n \\"value\\": -433\\n }\\n \],\\n \\"buffer\\": \[\\n 254,\\n 79\\n \],\\n \\"translated\_payload\\": {\\n \\"value\\": -433\\n },\\n \\"\_event\\": \\"node:53ebc095797a50fc\\"\\n}\\nmsg.payload = Math.floor(Math.random() \* (2000 - (-1000) + 1)) + (-1000); \\nreturn msg;","outputs":1,"timeout":0,"noerr":0,"initialize":"","finalize":"","libs":\[\],"x":430,"y":4700,"wires":\[\["1a80648df0d6abfd"\]\]},{"id":"1a80648df0d6abfd","type":"ui-chart","z":"997da33a0beedade","g":"c12532a704294d5c","group":"4f87bd59a15b847e","name":"","label":"cpu test","order":9007199254740991,"chartType":"line","category":"topic","categoryType":"msg","xAxisLabel":"","xAxisProperty":"","xAxisPropertyType":"timestamp","xAxisType":"time","xAxisFormat":"","xAxisFormatType":"auto","xmin":"","xmax":"","yAxisLabel":"","yAxisProperty":"payload","yAxisPropertyType":"msg","ymin":"","ymax":"","bins":10,"action":"append","stackSeries":false,"pointShape":"circle","pointRadius":"1","showLegend":true,"removeOlder":1,"removeOlderUnit":"3600","removeOlderPoints":"","colors":\["#0095ff","#ff0000","#ff7f0e","#2ca02c","#a347e1","#d62728","#ff9896","#9467bd","#c5b0d5"\],"textColor":\["#666666"\],"textColorDefault":true,"gridColor":\["#e5e5e5"\],"gridColorDefault":true,"width":6,"height":8,"className":"","interpolation":"step","x":680,"y":4700,"wires":\[\[\]\]},{"id":"4f87bd59a15b847e","type":"ui-group","name":"test","page":"c6ff182a4185f2f2","width":"6","height":"1","order":1,"showTitle":true,"className":"","visible":"true","disabled":"false","groupType":"default"},{"id":"c6ff182a4185f2f2","type":"ui-page","name":"Test page","ui":"ID-BASE-1","path":"/testpage","icon":"home","layout":"grid","theme":"c4cba76c368d7996","breakpoints":\[{"name":"Default","px":"0","cols":"3"},{"name":"Tablet","px":"576","cols":"6"},{"name":"Small Desktop","px":"768","cols":"9"},{"name":"Desktop","px":"1024","cols":"12"}\],"order":10,"className":"","visible":true,"disabled":false},{"id":"ID-BASE-1","type":"ui-base","name":"Dashboard","path":"/dashboard","appIcon":"","includeClientData":true,"acceptsClientConfig":\["ui-control","ui-notification"\],"showPathInSidebar":false,"headerContent":"page","titleBarStyle":"default","showReconnectNotification":false,"notificationDisplayTime":"1","showDisconnectNotification":true,"allowInstall":true},{"id":"c4cba76c368d7996","type":"ui-theme","name":"Test theme","colors":{"surface":"#ffffff","primary":"#0094ce","bgPage":"#eeeeee","groupBg":"#ffffff","groupOutline":"#cccccc"},"sizes":{"density":"default","pagePadding":"12px","groupGap":"12px","groupBorderRadius":"4px","widgetGap":"12px"}},{"id":"02cfc10c5dadf085","type":"global-config","env":\[\],"modules":{"@flowfuse/node-red-dashboard":"1.30.2"}}\]
> \`\`\`
> 
> \### Environment
> 
> \- Dashboard version: 1.30.2 (also checked with 1.28.0)
> \- Node-RED version: 5.0.0
> \- Node.js version: 24.18.0
> \- npm version:
> \- Platform/OS: Ubunto 26.04 on laptop
> \- Browser:
> 
> 
> \### Have you provided an initial effort estimate for this issue?
> 
> I am not a FlowFuse team member

---

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [27 July 2026 08:44 UTC](https://discourse.nodered.org/t/feasability-of-migrating-to-dashboard-2-0/101298/42 "2026-07-27T08:44:37Z")

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