Getting Data In

Clarification on metrics.log (on forwarders)

yoho
Contributor

Splunk documentation about metrics.log is nice but not entirely up to date and complete according to me.

  • In section "Tcpout connections messages", we are missing the aggregation parameter for the values. Is the data reported (like _tcp_KBps) by "name", by "destIp" , by something else ... ? I've tried to figure this out by graphing _tcp_KBps over time and use different aggregation parameters but I have never been able to get a continuous line with a growing value (which should be the case).
  • From time to time another field named "one_time_client=1" appears. What does it mean ?
  • When UseACK is true, you get 2 additional metrics : max_ackq_size and current_ackq_size. They are not documented as far as I know, what do they mean ?
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Monitoring AI Agents with Splunk Observability Cloud

Let’s say I’m running a travel planning AI app in production. A user asks for three concise hotel options in ...

[Puzzles] Solve, Learn, Repeat: Tiling

This puzzle (first published here) is based on finding groups of tessellated tiles (inspired by floor tiles I ...

SOK it to Me: Top 3 Benefits of Using Splunk Operator on Kubernetes that’ll Make ...

    Thursday, July 9, 2026  |  11:00AM–12:00PM PDT Duration: 1 hour (includes Q&A) Managing can feel like a ...