worker_processes 25; \/\/\u542f\u52a8\u7684\u5b50\u8fdb\u7a0b\u4e2a\u6570\uff08\u4e00\u822c\u7b49\u4e8ecpu\u7684\u4e2a\u6570\uff09\n worker_rlimit_nofile 102400; \/\/\u6bcf\u4e2a\u5b50\u8fdb\u7a0b\u53ef\u4ee5\u6253\u5f00\u7684\u6700\u591a\u6587\u4ef6\u4e2a\u6570\n\n events {\n worker_connections 102400; \/\/\u6bcf\u4e2a\u5b50\u8fdb\u7a0b\u53ef\u540c\u65f6\u7ef4\u62a4\u8fde\u63a5\u7684\u4e2a\u6570 use epoll; #linux best event mode \/\/nginx\u5f53\u524d\u7684IO\u6a21\u578b\uff0c\u5bf9\u4e8elinux2.6\u53ca\u4ee5\u4e0a\uff0cepoll\u7684\u6027\u80fd\u8fdc\u5927\u4e8eselect\n<\/code><\/pre>\n}<\/p>\n
\u53c2\u8003\uff1a http:\/\/blog.csdn.net\/xifeijian\/article\/details\/17385831<\/p>\n
Apache<\/h4>\n
\u5904\u7406\u9759\u6001\u8d44\u6e90\uff0c\u65e0\u6cd5\u5904\u7406\u52a8\u6001\uff08\u9700\u8981\u5e94\u7528\u670d\u52a1\u5668\u652f\u6301\uff09<\/p>\n
\u9759\u6001\u8d44\u6e90\u76f4\u63a5\u4ea4\u7ed9apache\u5904\u7406<\/p>\n
ab \u547d\u4ee4\u8fdb\u884c\u6d4b\u8bd5\uff0c\u8fbe\u52301000\u5e76\u53d1\u5f88easy<\/p>\n
ab -k -c 1000 -n 1000000 http:\/\/hostname:port\/path
\n\u53c2\u8003\uff1ahttp:\/\/httpd.apache.org\/docs\/2.2\/programs\/ab.html<\/p>\n
\u5f00\u542fMPM\u652f\u6301\u5927\u5e76\u53d1<\/h5>\n
prefork\u6a21\u5f0f\uff0c\u591a\u8fdb\u7a0b\uff08\u6bcf\u4e2a\u8fdb\u7a0b\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\uff09\uff0c\u5185\u5b58\u5360\u7528\u9ad8<\/p>\n
\u786e\u5b9aapache\u6a21\u5f0f\u547d\u4ee4\uff1a<\/p>\n
.\/httpd \u2013l \u8f93\u51fa\uff1a<\/p>\n
Compiled in modules:
\ncore.c
\nworker.c
\nhttp_core.c
\nmod_so.c
\n\u4fee\u6539httpd-mpm.conf<\/p>\n
<IfModule mpm_worker_module>\n StartServers 2\n MaxClients 150\n MinSpareThreads 25\n MaxSpareThreads 75\n ThreadsPerChild 25\n MaxRequestsPerChild 0\n<\/IfModule>\n<\/code><\/pre>\n\u4e0a\u9762\u7684\u914d\u7f6e\u9700\u8981\u6ee1\u8db3\u4ee5\u4e0b\u516c\u5f0f\uff1a
\nThreadLimit >= ThreadsPerChild
\nMaxClients <= ServerLimit * ThreadsPerChild \u5fc5\u987b\u662fThreadsPerChild\u7684\u500d\u6570
\nMaxSpareThreads >= MinSpareThreads+ThreadsPerChild<\/p>\n
Linux<\/h4>\ntoo many open files error<\/h5>\n
ulimit -a \u8fdb\u884c\u67e5\u770b \u4fee\u6539vi \/etc\/security\/limits.conf<\/p>\n
\u6dfb\u52a0\uff1a<\/p>\n
\n- \n
\n- nofile 65535
\n\u53c2\u8003\u6587\u6863\uff1a
\nhttp:\/\/kerry.blog.51cto.com\/172631\/300784
\nhttp:\/\/blog.csdn.net\/lifeibo\/article\/details\/5972356<\/li>\n<\/ul>\n<\/li>\n<\/ul>\nHttp\u8fde\u63a5\u662f\u57fa\u4e8eTCP\u7684\uff0c\u8fd9\u4e2a\u65f6\u5019\u9700\u8981\u5bf9linux\u670d\u52a1\u5668\u8fdb\u884c\u4f18\u5316\u3002
\n\u4e09\u6b21\u63e1\u624b<\/strong>
\n![\"\u4e09\u6b21\u63e1\u624b\"](\"http:\/\/www.shenyanchao.cn\/images\/blog\/2013\/three-times-handshake.png\")
<\/p>\n\u56db\u6b21\u6325\u624b<\/strong>
\n![\"\u56db\u6b21\u6325\u624b\"](\"http:\/\/www.shenyanchao.cn\/images\/blog\/2013\/four-wave.png\")
<\/p>\n\u5982\u4f55\u67e5\u770b\u670d\u52a1\u5668TCP\u72b6\u6001\uff1f
\n\u547d\u4ee4\uff1a<\/p>\n
netstat -n | awk '\/^tcp\/ {++S[$NF]} END {for(a in S) print a, S[a]}' \u8f93\u51fa\uff1a \n\n ESTABLISHED 1423\n FIN_WAIT1 1\n FIN_WAIT2 262\n SYN_SENT 1\n TIME_WAIT 962\n<\/code><\/pre>\n\u4f18\u5316TCP\u8fde\u63a5\u76f8\u5173\u53c2\u6570\uff1a<\/p>\n
vi \/etc\/sysctl.conf\n\n net.ipv4.tcp_fin_timeout = 30 \u4fdd\u6301\u5728FIN-WAIT-2\u7684\u65f6\u95f4\u3002\u9ed8\u8ba460\u79d2\u30022.2\u5185\u6838\u662f180\u79d2\n net.ipv4.tcp_keepalive_time = 1200 \u957f\u8fde\u63a5keepalive\u6253\u5f00\uff0c\u53d1\u9001\u7684\u9891\u7387\u3002\u9ed8\u8ba47200\uff082H\uff09\n net.ipv4.tcp_tw_reuse = 1 \u9ed8\u8ba40\uff0c\u5904\u4e8eTIME-WAIT\u72b6\u6001\u7684socket\u53ef\u4ee5\u7528\u4e8e\u65b0\u7684TCP\u8fde\u63a5\n net.ipv4.tcp_tw_recycle = 1 \u9ed8\u8ba40\uff0cTIME-WAIT\u72b6\u6001\u7684sockets\u5feb\u901f\u56de\u6536\n net.ipv4.ip_local_port_range = 1024 65000 \u5411\u5916\u8fde\u63a5\u7684\u7aef\u53e3\u8303\u56f4\uff0c\u9ed8\u8ba432768~61000\n net.ipv4.tcp_max_syn_backlog = 8192 \u9ed8\u8ba41024\/128,\u672a\u83b7\u5f97\u5ba2\u6237\u7aef\u8fde\u63a5\u8bf7\u6c42\u5e76\u4fdd\u5b58\u5728\u961f\u5217\u4e2d\u7684\u6700\u5927\u6570\u76ee\u3002\n net.ipv4.tcp_max_tw_buckets = 5000 \u9ed8\u8ba4180000\uff0c\u7cfb\u7edf\u5904\u7406\u7684\u6700\u5927TIME_WAIT\u6570\u76ee\u3002\n net.ipv4.route.gc_timeout = 100 \u8def\u7531\u7f13\u5b58\u5237\u65b0\u9891\u7387\uff0c\u5931\u8d25\u591a\u957f\u65f6\u95f4\u8df3\u5230\u53e6\u4e00\u4e2a\u3002\u9ed8\u8ba4300.\n net.ipv4.tcp_syncookies = 1 \u9ed8\u8ba40\uff0cSYN\u961f\u5217\u6ea2\u51fa\uff0c\u542f\u7528cookies\u5904\u7406\u3002\n net.ipv4.tcp_syn_retries = 1 \u65b0\u5efa\u8fde\u63a5\u53d1\u9001SYN\u6b21\u6570\uff0c\u9ed8\u8ba45\uff0c180\u79d2\n net.ipv4.tcp_synack_retries = 1 3\u6b21\u63e1\u624b\u7684\u7b2c\u4e8c\u6b65\uff0c\u91cd\u8bd5\u51e0\u6b21\u3002\u9ed8\u8ba45.\n<\/code><\/pre>\n\/sbin\/sysctl -p \u751f\u6548
\n\u53c2\u8003\uff1a http:\/\/ju.outofmemory.cn\/entry\/91121<\/p>\n","protected":false},"excerpt":{"rendered":"
nginx\/apache + tomcat + php + mysql + linux, \u4ecb\u7ecd\u5982\u4f55\u5b9a\u4f4d\u74f6\u9888\u4e0e\u8c03\u4f18 Tomcat \u6309\u7167\u5b98\u65b9\u9ed8\u8ba4\u914d\u7f6e\u3002 \u5e76\u53d1150\u6b63\u5e38;\u8fbe\u5230210\u65f6\uff0c\u62a5connection...<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[34],"tags":[8,60,49],"class_list":["post-1127","post","type-post","status-publish","format-standard","hentry","category-software","tag-java","tag-tomcat","tag-49"],"views":2954,"_links":{"self":[{"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/posts\/1127","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1127"}],"version-history":[{"count":2,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/posts\/1127\/revisions"}],"predecessor-version":[{"id":1129,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/posts\/1127\/revisions\/1129"}],"wp:attachment":[{"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}