1<!-- Keep ClickHouse inside its container limit (3 GB) on a small Docker VM. -->2<clickhouse>3 <max_server_memory_usage_to_ram_ratio>0.75</max_server_memory_usage_to_ram_ratio>4 <mark_cache_size>268435456</mark_cache_size>5 <uncompressed_cache_size>0</uncompressed_cache_size>6 <logger>7 <level>warning</level>8 </logger>9</clickhouse>