@@ -597,13 +597,13 @@ psql: could not connect to server: No such file or directory
597597 <row>
598598 <entry><varname>SEMMNI</></>
599599 <entry>Maximum number of semaphore identifiers (i.e., sets)</>
600- <entry>at least <literal>ceil((max_connections + autovacuum_max_workers) / 16)</literal></>
600+ <entry>at least <literal>ceil((max_connections + autovacuum_max_workers + 4 ) / 16)</literal></>
601601 </row>
602602
603603 <row>
604604 <entry><varname>SEMMNS</></>
605605 <entry>Maximum number of semaphores system-wide</>
606- <entry><literal>ceil((max_connections + autovacuum_max_workers) / 16) * 17</literal> plus room for other applications</>
606+ <entry><literal>ceil((max_connections + autovacuum_max_workers + 4 ) / 16) * 17</literal> plus room for other applications</>
607607 </row>
608608
609609 <row>
@@ -678,7 +678,7 @@ psql: could not connect to server: No such file or directory
678678 linkend="sysvipc-parameters">). The parameter <varname>SEMMNI</>
679679 determines the limit on the number of semaphore sets that can
680680 exist on the system at one time. Hence this parameter must be at
681- least <literal>ceil((max_connections + autovacuum_max_workers) / 16)</>.
681+ least <literal>ceil((max_connections + autovacuum_max_workers + 4 ) / 16)</>.
682682 Lowering the number
683683 of allowed connections is a temporary workaround for failures,
684684 which are usually confusingly worded <quote>No space