nnection.html#GUC-MAX-CONNECTIONS"
>max_connections</A
>) and allowed autovacuum worker
    process (<A
HREF="runtime-config-autovacuum.html#GUC-AUTOVACUUM-MAX-WORKERS"
>autovacuum_max_workers</A
>), in sets of 16.
    Each such set will
    also contain a 17th semaphore which contains a <SPAN
CLASS="QUOTE"
>"magic
    number"</SPAN
>, to detect collision with semaphore sets used by
    other applications. The maximum number of semaphores in the system
    is set by <TT
CLASS="VARNAME"
>SEMMNS</TT
>, which 