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ryan
4b83f91b31
Move performance.xml to config/clickhouse and mount the directory to /etc/clickhouse-server/config.d; update docs and compose paths.
26 lines
1.4 KiB
XML
26 lines
1.4 KiB
XML
<?xml version="1.0"?>
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<!--
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Tuned for small control-plane hosts (e.g. 3c6g).
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background_pool_size * background_merges_mutations_concurrency_ratio must stay
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greater than merge_tree number_of_free_entries_in_pool_to_execute_mutation
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(ClickHouse 25.x refuses to start otherwise). Keep the merge free-entry
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thresholds low so a small pool remains valid.
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-->
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<clickhouse>
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<max_concurrent_queries>20</max_concurrent_queries>
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<background_pool_size>4</background_pool_size>
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<background_merges_mutations_concurrency_ratio>2</background_merges_mutations_concurrency_ratio>
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<background_schedule_pool_size>4</background_schedule_pool_size>
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<background_common_pool_size>2</background_common_pool_size>
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<background_fetches_pool_size>2</background_fetches_pool_size>
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<background_move_pool_size>1</background_move_pool_size>
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<mark_cache_size>268435456</mark_cache_size>
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<uncompressed_cache_size>0</uncompressed_cache_size>
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<merge_tree>
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<number_of_free_entries_in_pool_to_execute_mutation>2</number_of_free_entries_in_pool_to_execute_mutation>
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<number_of_free_entries_in_pool_to_lower_max_size_of_merge>2</number_of_free_entries_in_pool_to_lower_max_size_of_merge>
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<number_of_free_entries_in_pool_to_execute_optimize_entire_partition>2</number_of_free_entries_in_pool_to_execute_optimize_entire_partition>
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</merge_tree>
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</clickhouse>
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