Large gaps in sentry traces

[luisvieiragmr]

hey currently when looking at traces for any route in my nextjs app router application i see large gaps in server transactions

For example this whole event took ~150ms but start response started at ~64ms
Also there's a large gap between finishing render route and startresponse

has anybody else faced this?

also i see not-found page is executed for every request to a dynamic route?

[icyJoseph]

I wonder if its just the time it takes to stream the response and close the stream 🤔

• next.js/packages/next/src/server/app-render/app-render.tsx

  Line 1437 in a0de92e

  spanName: `render route (app) ${pagePath}`,

  this is the render route (app) span

• next.js/packages/next/src/server/app-render/app-render.tsx

  Line 1491 in a0de92e

  const stream = await renderToStreamWithTracing(

  the work is awaited
• And this is the work that's awaited,

  next.js/packages/next/src/server/app-render/app-render.tsx

  Line 1634 in a0de92e

  async function renderToStream(

A few moving parts, but I think we can try to debug, learn what happens in those