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Why is our ClickHouse analytical query running three times slower than yesterday and which system tables should I query right now to identify the blocking processes?

ChatGPTgpt-61 query10/31/2026
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Why is our ClickHouse analytical query running three times slower than yesterday and which system tables should I query right now to identify the blocking processes?
1 real search · 1 real-search pass
ClickHouse official documentation system.processes system.query_log system.merges system.mutations system.replicas system.metricsGoogle ↗
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Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

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Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

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ChatGPT1 real searches · gpt-6
ClickHouse official documentation system.processes system.query_log system.merges system.mutations system.replicas system.metrics Google ↗

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Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
ClickHouse official documentation system.processes system.query_log system.merges system.mutations system.replicas system.metrics
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Google ↗
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