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Slavi Pantaleev
73a52c8a24
With workers enabled, every Synapse process (the main one and each worker) maintains its own database connection pool of up to matrix_synapse_database_cp_max (default: 10) connections. The previous fixed limit of 500 left little headroom on setups running many workers, where exhausting it manifests as degraded performance and, reportedly, E2EE misbehavior. Size the limit as a 200-connection baseline (for everything else that talks to Postgres) plus cp_max connections per Synapse process, never going below the previous value of 500. The stock worker presets stay at 500; setups that raise worker counts (or cp_max) get a limit that grows accordingly. The new matrix_synapse_workers_total_count variable reflects what the matrix_synapse_workers_*_count variables ask for; it does not reflect a manually populated matrix_synapse_workers_enabled_list, and such setups should override postgres_max_connections themselves. Fixes #4442 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>