NginxとOSカーネルの設定をチューニングしてパフォーマンスを上げる

sudo cp /etc/sysctl.conf /etc/sysctl.conf_copy 
sudo nano /etc/sysctl.conf

net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.nf_conntrack_max = 1053616
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.tcp_rmem = 4096 349520 16777216
net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_fin_timeout = 5
net.ipv4.tcp_syn_retries = 3
net.ipv4.tcp_synack_retries = 3
net.ipv4.tcp_syncookies = 1
net.ipv4.ip_local_port_range = 10000 65535
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_rfc1337 = 1
net.ipv4.tcp_fin_timeout = 5
net.ipv4.tcp_max_tw_buckets = 65536
net.ipv4.tcp_orphan_retries = 0
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_slow_start_after_idle = 0
net.core.netdev_max_backlog = 65536
net.ipv4.tcp_max_syn_backlog = 65536
net.ipv4.conf.eth180.arp_ignore = 1
net.ipv4.conf.eth180.arp_announce = 2
net.core.somaxconn = 65535
vm.swappiness = 0
vm.overcommit_memory = 2
vm.overcommit_ratio = 99
kernel.shmall = 68719476736
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.sysrq = 0

sudo sysctl -p

sudo cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf_copy
sudo nano /etc/nginx/nginx.conf

user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

worker_rlimit_nofile 100000; ## 追加

events {
        worker_connections 4000; ## 変更
        multi_accept on; ## 変更
}

http {

        ##
        # Basic Settings
        ##

        sendfile on;
        tcp_nopush on;
        tcp_nodelay on;
        keepalive_timeout 65;
        types_hash_max_size 2048;
        # server_tokens off;

        # server_names_hash_bucket_size 64;
        # server_name_in_redirect off;

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

        ##
        # SSL Settings
        ##

        ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
        ssl_prefer_server_ciphers on;

        ##
        # Logging Settings
        ##

        access_log off; ## 変更
        error_log /var/log/nginx/error.log;

        ##
        # Gzip Settings
        ##

        gzip on;

        # gzip_vary on;
        # gzip_proxied any;
        # gzip_comp_level 6;
        # gzip_buffers 16 8k;
        # gzip_http_version 1.1;
        # gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

        ##
        # Virtual Host Configs
        ##

        include /etc/nginx/conf.d/*.conf;
        include /etc/nginx/sites-enabled/*;
}

#mail {
#       # See sample authentication script at:
#       # http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
# 
#       # auth_http localhost/auth.php;
#       # pop3_capabilities "TOP" "USER";
#       # imap_capabilities "IMAP4rev1" "UIDPLUS";
# 
#       server {
#               listen     localhost:110;
#               protocol   pop3;
#               proxy      on;
#       }
# 
#       server {
#               listen     localhost:143;
#               protocol   imap;
#               proxy      on;
#       }
#}

sudo service nginx restart