does agent uses compression for sending metrics/logs?

[mvadu]

I see a config use_gzip_compression under grpc_client_config: section, but nothing about using compression for the final remote write call. Does the agent uses any compression algorithms to its outbound remote write calls for metrics and logs (bound to remote Prometheus and Loki end points respectively).

[mvadu]

I think I am going to answer my own question, at least for metric part..
Based on Prometheus Remote Write spec the write is snappy compressed. Looks like the data while being saved to wal gets compressed, and same gets sent over.

https://github.com/prometheus/prometheus/blob/6aaa6dbb59fa3870f2c6b10a0d9b834812df7f73/tsdb/wal/wal.go#L627

Similarly promtail uses the same snappy compression