Registry / devops / node-red-contrib-msg-speed

node-red-contrib-msg-speed

library2.1.0jsnpmunverified

A Node-RED node (v2.1.0) that measures the rate at which messages arrive using a moving window. It counts messages over a configurable interval (seconds, minutes, or hours) and outputs speed stats every second. Supports topic-dependent statistics and message chaining for performance. Ideal for monitoring flow throughput. Maintained by bartbutenaers with regular updates.

devops

npm install node-red-contrib-msg-speed

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · NODE-RED-CONTRIB-M

node-red-contrib-msg-speed

devopsjavascriptv2.1.0

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

node-red-contrib-msg-speed

✓ Install via npm: npm install node-red-contrib-msg-speed (in ~/.node-red)

✗ Global install: npm install -g node-red-contrib-msg-speed

Must be installed inside the Node-RED user directory (~/.node-red) for proper discovery.

Shows how to install and configure the msg-speed node in Node-RED to measure message rate with a moving window.

// This node is used via the Node-RED editor, not programmatically. // After installation, add a 'msg-speed' node from the palette. // Configure the interval (e.g., 5) and frequency (e.g., 'sec') in the node's settings. // Connect input messages; the node outputs speed stats to the first output and passes the original message to the second output. // Example flow JSON can be found in the package's examples. // See https://github.com/bartbutenaers/node-red-contrib-msg-speed for details.

Debug

Known issues

breakingIn versions < 0.0.5, message chaining was done via parallel wires, causing cloning overhead. Upgrade to 0.0.5+ for performance via second output.

fix

Update to latest version: npm install node-red-contrib-msg-speed@latest in ~/.node-red

affects: <0.0.5

gotchaThe node outputs speed every second based on a moving window; intermediate messages are not output until the next tick.

fix

Design flows assuming one output per second, not per message.

affects: >=0.0.5

gotchaTopic-dependent statistics require enabling the option in node config; otherwise msg.topic is not set.

fix

Enable 'topic dependent statistics' in node properties to get per-topic speed.

affects: >=1.0.0

deprecatedThe msg.topic field for aggregated statistics uses value 'all_topics'; this may change in future.

fix

Check for 'all_topics' string; adapt if upstream changes.

affects: >=1.0.0

Errors

Common errors & fixes

Error: Cannot find module 'node-red-contrib-msg-speed'

Module installed globally instead of in Node-RED user directory.

fix

Run: cd ~/.node-red && npm install node-red-contrib-msg-speed

TypeError: Cannot read property 'frequency' of undefined

Accessing msg.frequency in a node that is not the msg-speed output.

fix

Ensure you are reading from the first output of the msg-speed node.

Node not found in palette

Node-RED not restarted after install, or installed wrong directory.

fix

Restart Node-RED; verify install in ~/.node-red/node_modules

Upgrade

Version history

2.1.0latest on npm

Audit

Dependencies

node-redoptionalRuntime dependency for Node-RED nodes

Agent activity

2 hits · last 30 days

node

Resources

githubhttps://github.com/bartbutenaers/node-red-contrib-msg-speed ↗

packagenode-red-contrib-msg-speed ↗

homepagehttps://github.com/bartbutenaers/node-red-contrib-msg-speed ↗