Make the number fgci processes configurable

README.md

@@ -35,6 +35,8 @@ to tune it:
 * MS_DEBUGLEVEL: The debug level 0=off 5=verbose
 * MS_ERRORFILE: If you want the debug to something other than STDOUT
 * MAX_REQUESTS_PER_PROCESS: To work around memory leaks (defaults to 1000)
+* MIN_PROCESSES: The minimum number of fcgi processes to keep (defaults to 1)
+* MAX_PROCESSES: The maximum number of fcgi processes to keep (defaults to 5)
 * MAPSERVER_CATCH_SEGV: Set to 1 to have the stacktraces in case of crash
 * LISTEN_PORT_80: When running the container as an unprivileged user, apache 
 will listen to port 8080 instead of 80. Set to 1 force listening to port 80

server/Dockerfile

@@ -44,7 +44,9 @@ COPY target /usr/local/
 
 ENV MS_DEBUGLEVEL=0 \
     MS_ERRORFILE=/var/log/mapserver.log \
-    MAX_REQUESTS_PER_PROCESS=1000
+    MAX_REQUESTS_PER_PROCESS=1000 \
+    MIN_PROCESSES=1 \
+    MAX_PROCESSES=5
 
 RUN adduser www-data root && \
     chmod -R g+w ${APACHE_CONFDIR} ${APACHE_RUN_DIR} ${APACHE_LOCK_DIR} ${APACHE_LOG_DIR} /etc/confd /etc/mapserver /var/lib/apache2/fcgid /var/log && \

server/runtime/etc/apache2/conf-enabled/mapserver.conf

@@ -1,5 +1,7 @@
 # mapserver has memory leaks, this limit should improve long term memory usage
 FcgidMaxRequestsPerProcess ${MAX_REQUESTS_PER_PROCESS}
+FcgidMinProcessesPerClass ${MIN_PROCESSES}
+FcgidMaxProcessesPerClass ${MAX_PROCESSES}
 
 ScriptAliasMatch "^/.*" /usr/local/bin/mapserv_wrapper
 <Location />