See this: http://blog.mudynamics.com/2011/09/05/help-couchdb-break-the-c10k-barrier/ http://blog.mudynamics.com/2011/09/05/help-couchdb-break-the... for various

See this: http://blog.mudynamics.com/2011/09/05/help-couchdb-break-the-c10k-barrier/ http://blog.mudynamics.com/2011/09/05/help-couchdb-break-the... for various server tuning (not really CouchDB-specific). You can change the net.ipv4.ip_local_port_range to "1024 65535" to increase this range.