Misc. bug: Metric names are invalid

[xfalcox]

Name and Version

Current docker version of llamacpp server

Operating systems

Linux

Which llama.cpp modules do you know to be affected?

llama-server

Command line

docker run ghcr.io/ggml-org/llama.cpp:server --metrics

Problem description & steps to reproduce

The metrics initially added at #5708 are using the format

llamacpp:metric_name_goes_here

which is invalid per https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels, in particular:

Note: The colons are reserved for user defined recording rules. They should not be used by exporters or direct instrumentation.

they should use the format

llamacpp_metric_name_goes_here

First Bad Commit

No response

Relevant log output

[github-actions]

This issue was closed because it has been inactive for 14 days since being marked as stale.