Use PHP7.

root/etc/php7/php-fpm.conf

@@ -0,0 +1,19 @@
+[global]
+daemonize = no
+
+[www]
+user = www-data
+listen.owner = www-data
+listen.group = www-data
+listen = /tmp/php-fpm.sock
+pm = dynamic
+pm.max_children = 15
+pm.start_servers = 2
+pm.min_spare_servers = 1
+pm.max_spare_servers = 6
+chdir = /var/www/ttrss/
+request_terminate_timeout = 0
+env[PATH] = /usr/local/bin:/usr/bin:/bin
+php_admin_value[max_execution_time] = 10800
+php_admin_value[max_input_time] = 3600
+php_admin_value[expose_php] = Off