Nginx main page long loading: "Primary script unknown"?

Question

PHP

Hello! After recent updates, WordPress began to notice that the main page took a very long time to load (maybe it was like this before, but I didn’t notice). By turning off plugins, I found evil - Crayon Syntax Highlighter. With the plug-in enabled, the page is generated in 2.5 seconds, with it disabled - 600 ms
. I use the nginx + php-fpm bundle, Ubuntu 12.04 LTS OS. Get into the nginx logs:

2014/04/19 08:23:14 [error] 852#0: *47798 FastCGI sent in stderr:
"Primary script unknown" while reading response header from upstream, client: 195.122.252.29, server: master.virmandy.net, request: "GET
//engine/init.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "master.virmandy.net"
2014/04/19 11:44:27 [error]
855#0: *48379 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 195.122.252.29, server:
master.virmandy.net, request: "GET //engine/init.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host:
"master.virmandy.net"

2014/04/19 21:10:56 [error] 856#0: *52391 FastCGI sent in stderr: "PHP message: PHP Warning: touch(): Unable to
create file /home/wollk/master/www/wp-content/plugins/crayon-syntax-highlighter/log.txt because Permission denied in
/home/wollk/master/www/wp-content/plugins/crayon-syntax-highlighter/crayon_settings_w" while reading upstream, client: 195.88.72.203,
server: master.virmandy.net, request: "GET /wp-admin/options-general.php?page=crayon_settings HTTP/1.1", upstream:
"fastcgi://unix:/var/run/php5-fpm.sock:", host: "master.virmandy.net", referrer: "http://master.virmandy.net/wp-admin/plugins.php"

2014/04/19 21:10:56 [error] 856#0: *52391 FastCGI sent in stderr: "p.class.php on line 1180" while reading upstream, client: 195.88.72.203,
server: master.virmandy.net, request: "GET /wp-admin/options-general.php?page=crayon_settings HTTP/1.1", upstream:
"fastcgi://unix:/var/run/php5-fpm.sock:", host: "master.virmandy.net", referrer: "http://master.virmandy.net/wp-admin/plugins.php"

2014/04/19 23:50:47 [error] 856#0: *54136 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream,
client: 94.23.204.157, server: master.virmandy.net, request: "GET /nosuichfile.php HTTP/1.1", upstream:
"fastcgi://unix:/var/run/php5-fpm.sock:", host: "185.22.60.25"

2014/04/19 23:50:47 [error] 856#0: *54136 FastCGI sent in stderr: "Primary
script unknown" while reading response header from upstream, client: 94.23.204.157, server: master.virmandy.net, request: "GET
/noxdir/nosuichfile.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "185.22.60.25"

I see only one suspicious thing, there is no such file "....crayon-syntax-highlighter/crayon_settings_w" while reading...", there is crayon_settings_wp.class.php
Here is the settings file itself:

server {
        listen   80;
        server_name master.virmandy.net; 
        client_max_body_size 16M;
        root /home/wollk/master/www;
        index index.html index.htm index.php;

        location / {
                try_files $uri $uri/ /index.php;
                location ~ \.php$ {
                        fastcgi_split_path_info ^(.+\.php)(/.+)$;
                        fastcgi_pass unix:/var/run/php5-fpm.sock;
                        fastcgi_index index.php;
                        include fastcgi_params;
                        fastcgi_param   SCRIPT_FILENAME         $document_root$fastcgi_script_name;

                }
        }
}

Answer 1

include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;

Put after

fastcgi_split_path_info ^(.+\.php)(/.+)$;