tweak fpm config

templates/fpm/php-fpm-www.conf.twig

@@ -24,6 +24,12 @@ group = docker
 ; Note: This value is mandatory.
 listen = [::]:9000
 
+; The number of requests each child process should execute before respawning.
+; This can be useful to work around memory leaks in 3rd party libraries. For
+; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS.
+; Default Value: 0
+pm.max_requests = 500
+
 ; Clear environment in FPM workers
 ; Prevents arbitrary environment variables from reaching FPM worker processes
 ; by clearing the environment in workers before env vars specified in this

templates/fpm/php-fpm.conf.twig

@@ -22,4 +22,25 @@ error_log = /var/log/php/php-fpm.log
 ; Default Value: notice
 log_level = notice
 
+; If this number of child processes exit with SIGSEGV or SIGBUS within the time
+; interval set by emergency_restart_interval then FPM will restart. A value
+; of '0' means 'Off'.
+; Default Value: 0
+emergency_restart_threshold = 10
+
+; Interval of time used by emergency_restart_interval to determine when
+; a graceful restart will be initiated.  This can be useful to work around
+; accidental corruptions in an accelerator's shared memory.
+; Available Units: s(econds), m(inutes), h(ours), or d(ays)
+; Default Unit: seconds
+; Default Value: 0
+emergency_restart_interval = 1m
+
+; Time limit for child processes to wait for a reaction on signals from master.
+; Available units: s(econds), m(inutes), h(ours), or d(ays)
+; Default Unit: seconds
+; Default Value: 0
+process_control_timeout = 10s
+
+
 {{ comment }}