This whole sockets conversation has wandered way off topic. PostgreSQL
runs into high-connection scaling issues due to memory limitations (on
Windows in particular, as noted in the FAQ entry I suggested), shared
resource contention, and general per-connection overhead long before
socket issues matter.
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Greg Smith 2ndQuadrant US Baltimore, MD
PostgreSQL Training, Services and Support
greg(at)2ndQuadrant(dot)com www.2ndQuadrant.us