Prometheus writes hundreds of GB in one month with few targets on macOS — is this normal?

I’m running Prometheus locally on my Mac, and I’ve noticed something strange. In the Activity Monitor, the “bytes written” value for the Prometheus process is extremely high — nearly 300 GB written within about one month of uptime.

However, my Prometheus setup only scrapes a few simple targets.is this normal?

  • prometheus version: 3.5.0
  • macOS: 15.3