As noted [1] they are configurable. ingester: chunk_retain_period: 30s chunk_idle_period: 5m0s chunk_block_size: 262144 chunk_target_size: 15

As noted [1] they are configurable. ingester: chunk_retain_period: 30s chunk_idle_period: 5m0s chunk_block_size: 262144 chunk_target_size: 1572864 chunk_encoding: gzip max_chunk_age: 2h0m0s [1] https://grafana.com/docs/loki/latest/operations/storage/filesystem/ https://grafana.com/docs/loki/latest/operations/storage/file...