Nginx + php-fpm высокая загрузка процессора

nginx.conf

 # Server globals
user                    nginx;
worker_processes        auto;
worker_rlimit_nofile    65535;
error_log               /var/log/nginx/error.log crit;
pid                     /var/run/nginx.pid;


# Worker config
events {
worker_connections  1024;
use                 epoll;
multi_accept        on;
}


http {
# Main settings
sendfile                        on;
tcp_nopush                      on;
tcp_nodelay                     on;
client_header_timeout           1m;
client_body_timeout             1m;
client_header_buffer_size       2k;
client_body_buffer_size         256k;
client_max_body_size            256m;
large_client_header_buffers     4   8k;
send_timeout                    30;
keepalive_timeout               90 90;
reset_timedout_connection       on;
server_tokens                   off;
server_name_in_redirect         off;
server_names_hash_max_size      512;
server_names_hash_bucket_size   512;


# Log format
log_format  main    '$remote_addr - $remote_user [$time_local] $request '
'"$status" $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
log_format  bytes   '$body_bytes_sent';
#access_log          /var/log/nginx/access.log main;
access_log off;


# Mime settings
include             /etc/nginx/mime.types;
default_type        application/octet-stream;


# Compression
gzip                on;
gzip_comp_level     9;
gzip_min_length     512;
gzip_buffers        8 64k;
gzip_types          text/plain text/css text/javascript text/js text/xml application/json application/javascript application/x-javascript application/xml application/xml+rss application/x-font-ttf application/x-ns-proxy-autoconfig image/svg+xml font/opentype;
gzip_proxied        any;
gzip_disable        "MSIE [1-6]\.";


# Proxy settings
proxy_redirect      off;
proxy_set_header    Host            $host;
proxy_set_header    X-Real-IP       $remote_addr;
proxy_set_header    X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass_header   Set-Cookie;
proxy_connect_timeout   90;
proxy_send_timeout  90;
proxy_read_timeout  90;
proxy_buffers       32 4k;


# Cloudflare https://www.cloudflare.com/ips
set_real_ip_from   103.21.244.0/22;
set_real_ip_from   103.22.200.0/22;
set_real_ip_from   103.31.4.0/22;
set_real_ip_from   104.16.0.0/12;
set_real_ip_from   108.162.192.0/18;
set_real_ip_from   131.0.72.0/22;
set_real_ip_from   141.101.64.0/18;
set_real_ip_from   162.158.0.0/15;
set_real_ip_from   172.64.0.0/13;
set_real_ip_from   173.245.48.0/20;
set_real_ip_from   188.114.96.0/20;
set_real_ip_from   190.93.240.0/20;
set_real_ip_from   197.234.240.0/22;
set_real_ip_from   198.41.128.0/17;
#set_real_ip_from   2400:cb00::/32;
#set_real_ip_from   2606:4700::/32;
#set_real_ip_from   2803:f800::/32;
#set_real_ip_from   2405:b500::/32;
#set_real_ip_from   2405:8100::/32;
#set_real_ip_from   2c0f:f248::/32;
#set_real_ip_from   2a06:98c0::/29;
real_ip_header     CF-Connecting-IP;


# SSL PCI Compliance
ssl_session_cache   shared:SSL:10m;
ssl_protocols       TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_ciphers        "ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:DES-CBC3-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4";


# Error pages
error_page          403          /error/403.html;
error_page          404          /error/404.html;
error_page          502 503 504  /error/50x.html;


# Cache settings
proxy_cache_path /var/cache/nginx levels=2 keys_zone=cache:10m inactive=60m max_size=1024m;
proxy_cache_key "$host$request_uri $cookie_user";
proxy_temp_path  /var/cache/nginx/temp;
proxy_ignore_headers Expires Cache-Control;
proxy_cache_use_stale error timeout invalid_header http_502;
proxy_cache_valid any 1d;


# Cache bypass
map $http_cookie $no_cache {
default 0;
~SESS 1;
~wordpress_logged_in 1;
}


# File cache settings
open_file_cache          max=10000 inactive=30s;
open_file_cache_valid    60s;
open_file_cache_min_uses 2;
open_file_cache_errors   off;


# Wildcard include
include             /etc/nginx/conf.d/*.conf;
}

и это проблема переписать в php файл в моем домене .conf

location / {
location ~* ^.+\.(jpeg|jpg|png|gif|bmp|ico|svg|css|js)$ {
expires     max;
}

location ~ [^/]\.php(/|$) {
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
if (!-f $document_root$fastcgi_script_name) {
return  404;
}

fastcgi_pass    127.0.0.1:9008;
fastcgi_index   index.php;
include         /etc/nginx/fastcgi_params;

}
}

location /config/config.txt {
rewrite ^(.*)$ /config/config.php;
}

Проблема в том, что когда большое количество пользователей подключается к серверу, загрузка процессора процессором nginx worker увеличивается до 100%.

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
20113 nginx     20   0 72204 6156  952 S 65.4  0.2   0:20.69 nginx: worker process
20111 nginx     20   0 72048 6076  956 S 62.1  0.2   0:39.13 nginx: worker process
20110 nginx     20   0 71060 5216  952 S 57.8  0.1   0:19.15 nginx: worker process
20112 nginx     20   0 70996 5152  952 S 44.6  0.1   0:20.91 nginx: worker process
20114 nginx     20   0 70740 4736  964 R 21.5  0.1   0:20.35 nginx: worker process
20109 nginx     20   0 71260 5200  952 S 17.5  0.1   0:22.48 nginx: worker process

Скрипт php использует функцию readfile () и возвращает данные в соответствии с несколькими параметрами (гео, пользовательский агент и т. Д.)

Кто-нибудь может помочь решить проблему с высокой загрузкой процессора nginx?

Обновление — код php:

<?php
$time = 10e6;
$uid = 'uid';

$config_aa    = 'aa/config_aa.js';
$config_bb    = 'bb/config_bb.js';
$config_cc    = 'cc/config_cc.js';
$config_other = 'other/config_other.json';


$COUNTRY_CODE = isset($_SERVER["HTTP_CF_IPCOUNTRY"]) ? $_SERVER["HTTP_CF_IPCOUNTRY"] : $COUNTRY_CODE = 'UNDEFINED';

if ($COUNTRY_CODE == 'AA' || $COUNTRY_CODE == 'UNDEFINED') {
if (round(microtime(true) * 1000) - $_GET[$uid] > $time ) {
header('Content-type: application/javascript');
readfile($config_aa);
readfile($config_bb);
exit;
}
else {
header('Content-type: application/javascript');
readfile($config_cc);
exit;
}
}

if ($COUNTRY_CODE == 'BB') {
if (round(microtime(true) * 1000) - $_GET[$uid] > $time ) {
header('Content-type: application/javascript');
readfile($config_aa);
readfile($config_bb);
exit;
}
else {
header('Content-type: application/javascript');
readfile($config_cc);
exit;
}
}

header('Content-type: no-javascripts-no-custom text/plain');
readfile($config_other);
exit;


?>