Document postmaster's -N switch.

src/man/postmaster.1

 .\" This is -*-nroff-*-
 .\" XXX standard disclaimer belongs here....
-.\" $Header: /cvsroot/pgsql/src/man/Attic/postmaster.1,v 1.13 1998/10/14 02:54:38 momjian Exp $
-.TH POSTMASTER UNIX 11/05/95 PostgreSQL PostgreSQL
+.\" $Header: /cvsroot/pgsql/src/man/Attic/postmaster.1,v 1.14 1999/02/21 03:17:31 tgl Exp $
+.TH POSTMASTER UNIX 02/20/99 PostgreSQL PostgreSQL
 .SH "NAME"
 postmaster - run the Postgres postmaster
 .SH "SYNOPSIS"
@@ -18,6 +18,9 @@ data_dir]
 [\c
 .BR "-a"
 system]
+[\c
+.BR "-N"
+n_backends]
 .br
 .in +5n
 [\c
@@ -105,6 +108,14 @@ connections, use
 .BR "-a nounauth .
 This option no longer has any effect.
 .TP
+.BR "-N" " n_backends"
+.IR "n_backends"
+is the maximum number of backend server processes that this postmaster
+is allowed to start.  In the stock configuration, this value defaults
+to 64, and can be set as high as 1024 if your system will support that
+many processes. Both the default and upper limit values can be altered
+when building Postgres.
+.TP
 .BR "-b" " backend_pathname"
 .IR "backend_pathname"
 is the full pathname of the Postgres backend server executable file that