Trying to find "total Log Consumption" in a week, so which one should I use?
IIRC, metrics.log is done by each indexer, and reports what that indexer sees. license_usage.log is only done by the License master, and combines all input, so that would be the better choice.
Hope that helps - if it does I'd be happy if you would upvote/accept this answer, so others could profit from it. 🙂