2008
年作性能測試的時候,新進7臺 lenovo
4核4G 服務器用於性能測試。Nginx
作了一系列測試,印象很深的是:在這批機器上,Nginx狀態頁面的壓測。短鏈接的話最佳QPS約4萬,長鏈接的話最高QPS約13萬。javascript
lenovo
服務器已經沒人瞧得上了,只能作肉雞。服務器資源使用率很低,然而響應就是不夠快。css
Nginx
監控多個IP來突破瓶頸(多虛擬幾個IP
),維護成本略高。LVS
的NAT
方式來作轉發,然而NAT
對網絡的要求你懂的。本來10多臺服務器的壓力,全壓到1臺服務器的10多個端口上。竟然抗住了html
reuse_port
後,你會發現有不少進程同時監聽80
端口:reuse_port
的效果,小夥伴們驚呆了(短鏈接QPS過了24萬)!測試過程當中因爲壓大 TCP: Possible SYN flooding on port 80.
,出大量錯誤 。java
因而將併發量降到了6萬 net.core.somaxconn = 65535
。node
再關閉 reuse_port 後,咱們看下 perf top
的狀況:
linux
而後再打開 reuse_port ,對比 perf top
的狀況:
nginx
此時再放大 Nginx 監聽的 back_log
,看下資源使用狀況:
git
咱們來看看些時的隊列狀況(有入隊過萬了):
redis
而後咱們再來挑戰30萬併發(MTT是平均響應時間(ms)):json
通過一系列調優,相同環境相同併發量,沒有再出現 TCP: Possible SYN flooding on port 80.
。但出現了少許鏈接超時的狀況:
2015-11-29 01:31:54,779 ERROR Connection timed out java.net.ConnectException: Connection timed out at HTTPClient.HTTPConnection$EstablishConnection.run(HTTPConnection.java:4082) ~[grinder-httpclient-3.9.1.jar:na]
Dell PowerEdge M620 Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz Linux 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u3 (2015-08-04) x86_64 GNU/Linux Ethernet controller: Broadcom Corporation NetXtreme II BCM57810 10 Gigabit Ethernet (rev 10)
Tengine version: Tengine/2.1.1 (nginx/1.6.2) built by gcc 4.9.2 (Debian 4.9.2-10) TLS SNI support enabled configure arguments: --user=www-data --group=www-data --with-pcre-jit --prefix=/usr/share/nginx --sbin-path=/usr/sbin/nginx --dso-tool-path=/usr/sbin/dso_tool --dso-path=/usr/share/nginx/modules --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-syslog --with-jemalloc --with-mail --with-file-aio --with-mail_ssl_module --with-http_ssl_module --with-google_perftools_module --with-http_auth_request_module --with-http_dav_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_spdy_module --with-http_stub_status_module --with-http_realip_module --with-http_addition_module --with-http_xslt_module --with-http_image_filter_module --with-http_geoip_module --with-http_sub_module --with-http_flv_module --with-http_slice_module --with-http_mp4_module --with-http_concat_module --with-http_random_index_module --with-http_secure_link_module --with-http_sysguard_module --with-http_split_clients_module=shared --with-http_referer_module=shared --with-http_uwsgi_module=shared --with-http_scgi_module=shared --with-http_memcached_module=shared --with-http_limit_conn_module=shared --with-http_limit_req_module=shared --with-http_empty_gif_module=shared --with-http_browser_module=shared --with-http_user_agent_module=shared --with-http_upstream_ip_hash_module=shared --with-http_upstream_least_conn_module=shared --with-http_upstream_session_sticky_module=shared --with-http_reqstat_module=shared --with-http_lua_module --with-luajit-inc=/usr/include/luajit-2.0 --with-luajit-lib=/usr/lib/x86_64-linux-gnu --with-cpu-opt=amd64 --with-ld-opt=-Wl,-z,relro --with-cc-opt='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2' --add-module=../echo-nginx-module-0.58 --add-module=../headers-more-nginx-module-0.261 --add-module=../redis2-nginx-module-0.12 --add-module=../ngx_cache_purge-2.3 --add-module=../ngx_cache_path_status-1.0 loaded modules: ngx_core_module (static) ngx_errlog_module (static) ngx_conf_module (static) ngx_dso_module (static) ngx_syslog_module (static) ngx_events_module (static) ngx_event_core_module (static) ngx_epoll_module (static) ngx_procs_module (static) ngx_proc_core_module (static) ngx_openssl_module (static) ngx_regex_module (static) ngx_http_module (static) ngx_http_core_module (static) ngx_http_log_module (static) ngx_http_upstream_module (static) ngx_http_spdy_module (static) ngx_http_static_module (static) ngx_http_gzip_static_module (static) ngx_http_dav_module (static) ngx_http_autoindex_module (static) ngx_http_index_module (static) ngx_http_random_index_module (static) ngx_http_concat_module (static) ngx_http_upstream_ip_hash_module (shared, 3.1) ngx_http_upstream_least_conn_module (shared, 3.1) ngx_http_auth_request_module (static) ngx_http_auth_basic_module (static) ngx_http_limit_conn_module (shared, 3.1) ngx_http_access_module (static) ngx_http_limit_req_module (shared, 3.1) ngx_http_realip_module (static) ngx_http_geo_module (static) ngx_http_geoip_module (static) ngx_http_split_clients_module (shared, 3.1) ngx_http_map_module (static) ngx_http_reqstat_module (shared, 3.1) ngx_http_user_agent_module (shared, 3.1) ngx_http_referer_module (shared, 3.1) ngx_http_rewrite_module (static) ngx_http_ssl_module (static) ngx_http_proxy_module (static) ngx_http_uwsgi_module (shared, 3.1) ngx_http_fastcgi_module (static) ngx_http_scgi_module (shared, 3.1) ngx_http_empty_gif_module (shared, 3.1) ngx_http_memcached_module (shared, 3.1) ngx_http_browser_module (shared, 3.1) ngx_http_secure_link_module (static) ngx_http_sysguard_module (static) ngx_http_flv_module (static) ngx_http_slice_module (static) ngx_http_mp4_module (static) ngx_http_upstream_consistent_hash_module (static) ngx_http_upstream_check_module (static) ngx_http_upstream_keepalive_module (static) ngx_http_upstream_dynamic_module (static) ngx_http_stub_status_module (static) ngx_http_redis2_module (static) ngx_http_cache_purge_module (static) ngx_http_slowfs_module (static) ngx_cache_path_status_module (static) ngx_http_write_filter_module (static) ngx_http_header_filter_module (static) ngx_http_chunked_filter_module (static) ngx_http_spdy_filter_module (static) ngx_http_range_header_filter_module (static) ngx_http_gzip_filter_module (static) ngx_http_postpone_filter_module (static) ngx_http_ssi_filter_module (static) ngx_http_charset_filter_module (static) ngx_http_xslt_filter_module (static) ngx_http_image_filter_module (static) ngx_http_sub_filter_module (static) ngx_http_addition_filter_module (static) ngx_http_gunzip_filter_module (static) ngx_http_userid_filter_module (static) ngx_http_footer_filter_module (static) ngx_http_upstream_session_sticky_module (shared, 3.1) ngx_http_trim_filter_module (static) ngx_http_headers_filter_module (static) ngx_http_echo_module (static) ngx_http_headers_more_filter_module (static) ngx_http_lua_module (static) ngx_http_copy_filter_module (static) ngx_http_range_body_filter_module (static) ngx_http_not_modified_filter_module (static) ngx_mail_module (static) ngx_mail_core_module (static) ngx_mail_ssl_module (static) ngx_mail_pop3_module (static) ngx_mail_imap_module (static) ngx_mail_smtp_module (static) ngx_mail_auth_http_module (static) ngx_mail_proxy_module (static) ngx_google_perftools_module (static)
Nginx
配置以下:user www-data; worker_processes auto; pid /run/nginx.pid; events { use epoll; multi_accept off; reuse_port on; worker_connections 1048576; } dso { # 動態加載功能模塊 /usr/share/nginx/modules load ngx_http_memcached_module.so; load ngx_http_limit_conn_module.so; load ngx_http_empty_gif_module.so; load ngx_http_scgi_module.so; load ngx_http_upstream_session_sticky_module.so; load ngx_http_user_agent_module.so; load ngx_http_referer_module.so; load ngx_http_upstream_least_conn_module.so; load ngx_http_uwsgi_module.so; load ngx_http_reqstat_module.so; load ngx_http_browser_module.so; load ngx_http_limit_req_module.so; load ngx_http_split_clients_module.so; load ngx_http_upstream_ip_hash_module.so; } http { include /etc/nginx/mime.types; default_type text/plain; access_log off; sendfile on; tcp_nopush on; tcp_nodelay on; server_tokens off; keepalive_timeout 120; server_names_hash_bucket_size 512; server_name_in_redirect off; fastcgi_connect_timeout 3s; fastcgi_send_timeout 3s; fastcgi_read_timeout 3s; fastcgi_buffer_size 128k; fastcgi_buffers 8 128k; fastcgi_busy_buffers_size 256k; fastcgi_temp_file_write_size 256k; variables_hash_max_size 1024; set_real_ip_from 10.0.0.0/8; set_real_ip_from 172.28.0.0/16; set_real_ip_from 192.168.0.0/16; real_ip_header X-Forwarded-For; gzip off; gzip_disable "msie6"; gzip_min_length 1k; gzip_buffers 16 64k; gzip_http_version 1.1; gzip_comp_level 6; gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript; gzip_vary on; ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE ssl_prefer_server_ciphers on; access_log /var/log/nginx/access.log; error_log /var/log/nginx/error.log; server { listen 80 backlog=65535; charset utf-8; location / { # 打印Tengine狀態頁 stub_status on; # 開啓狀態頁,依賴 http_stub_status_module 模塊 access_log off; #訪問過程不記日誌 } location ~ ^(.*)\/\.(svn|git|hg|bzr|cvs)\/ { # 屏蔽這些目錄 deny all; access_log off; log_not_found off; } location ~ /\. { # 屏蔽.開頭的目錄或文件,好比 .htaccess .bash_history deny all; access_log off; log_not_found off; } location /do_not_delete.html { access_log off; empty_gif; } } }