No INP data found in this project

[reactor-copilot-007]

Is there an existing issue for this?

• I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
• I have reviewed the documentation https://docs.sentry.io/
• I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/react

SDK Version

8.15.0

Framework Version

React 18.2.0

Link to Sentry event

No response

SDK Setup/Reproduction Example

import * as Sentry from "@sentry/react";

Sentry.init({
    dsn: DSN,
    integrations: [
      Sentry.browserTracingIntegration(),
      Sentry.replayIntegration(),
    ],
    tracesSampleRate: 0.001,
    tracePropagationTargets: ["https://www.my-site.com", /^\/api\//],
    replaysSessionSampleRate: 0,
    replaysOnErrorSampleRate: 0.001,
    release: `react@${packageFile.version}`,
});

Steps to Reproduce

Project: PHP site with embedded react.js on all pages via defer script.

When debug is enabled and Browser->Performance->CPU->20x slowdown + interaction with complex filters in UI, I saw INP mentioned in the logs only once (all other times there were no logs about INP - about 20 tests in production).

Expected Result

Expecting to receive INP data

Actual Result

[AbhiPrasad]

@reactor-copilot-007 INP is only flushed when you navigate to another tab or minimize the browser window.

The reason why INP is probably not showing up is because the sample rate is just too low, tracesSampleRate: 0.001 means 0.1%, which means you only sample 1 out of every 1000 instances of INP. I recommend increasing your sample rate.

[reactor-copilot-007]

@AbhiPrasad I understand this, but our site is visited by many users, so we have to set tracesSampleRate: 0.001 to fit within the 10M span limits. Given the number of page views, the INP should be counted accurately.

[AbhiPrasad]

I see

@reactor-copilot-007 are you able to share a link to the site that is running the sentry sdk? That will help us dive in further.

[reactor-copilot-007]

@AbhiPrasad https://www.work.ua/en/
There are sentry logs enabled

[AbhiPrasad]

@reactor-copilot-007 you don't have a lot of interaction elements on your pages, so the likelihood of an interaction even happening is very low, which explains the lack of INP in our app.

Most of your interactable elements navigate to another page, which kicks off a separate set of web vitals to be recorded. And it judging by your relative pageload volume, the vast majority of your users are not interacting with any of the dropdowns or similar elements.

I was able to trigger INP on this page: https://www.work.ua/en/news/ukraine/2674/

@edwardgou-sentry any advice on what to do in these scenarios?

[reactor-copilot-007]

@AbhiPrasad for example, we have very popular job pages with a lot of filters that are used and we want to improve - https://www.work.ua/en/jobs-kyiv-accounting/

Before that, we used the web-vitals library and collected INP manually on our server.

There was a lot of data. This is the amount of poor INP data:

[AbhiPrasad]

Sentry is recording INP for the interactions on this page when sampled:

[AbhiPrasad]

@reactor-copilot-007 we've escalated this internally, this might actually be a server-side issue on our end. Thanks for the help in the meantime, we'll update this issue as soon as we get more details.

[edwardgou-sentry]

Hey @reactor-copilot-007 thanks for reporting this issue. We made an internal fix and the issue should now be resolved. I took a quick look at your org and can see INP now appearing. Please let us know if you have any further questions or issues! Closing this issue for now, thanks!

[duhaime]

@edwardgou-sentry what version number do we need to bump to to get INP data into sentry?

We're still seeing "No INP data found in this project" despite the fact that there are many traces for users on pages with lots of interaction elements that update the DOM.

[edwardgou-sentry]

Hi @duhaime, I recommend updating to the latest version available since that will include the most up to date fixes and improvements to INP and other performance features. At this time, 8.37.1 seems to be the most recent.

[duhaime]

Thank you @edwardgou-sentry, that did it :)