blocked-at | Detects node eventloop block and reports | Monitoring library

blocked-at is a JavaScript library typically used in Performance Management, Monitoring applications. blocked-at has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can install using 'npm i blocked-at' or download it from GitHub, npm.

The blocked() function reports every value over the configured threshold (defaults to 20ms). Usage is similar to blocked but the detection mechanism is different, to allow pointing to the slow function. It uses Async Hooks to measure the time and generate the stack trace. Stack trace will point to the beginning of an asynchronously called function that contained the long operation. Run tests (npm test) to see examples. There's a performance cost to enabling Async Hooks. It's recommended to detect blocking exists with something without the performance overhead and use blocked-at in testing environment to pinpoint where the slowdown happens. Rule of thumb is you should not be running this in production unless desperate.