[input.file] Limit read data

[tguenneguez]

Relevant telegraf.conf

[[inputs.filestat]]
  files = ["/tmp/test.log"]

Logs from Telegraf

2025-12-16T16:34:53Z I! [outputs.prometheus_client] Listening on https://0.0.0.0:4493/metrics
2025-12-16T16:35:55Z W! [inputs.file] Collection took longer than expected; not complete after interval of 31s
2025-12-16T16:36:26Z W! [inputs.file] Collection took longer than expected; not complete after interval of 31s
2025-12-16T16:36:57Z W! [inputs.file] Collection took longer than expected; not complete after interval of 31s
2025-12-16T16:37:28Z W! [inputs.file] Collection took longer than expected; not complete after interval of 31s

System info

Telegraf 1.37.0

Docker

RAS

Steps to reproduce

1. Add file supervision
2. Put big content in file (for example 1.7 Go)
3. CPU used by agent is very height

Expected behavior

It will be greate to be abble to limit read size of file content to protect agent.

Actual behavior

Agent never read all content of file and use a lot of CPU.

Additional info

No response