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centos中装配nginx

2013-08-01 
centos中安装nginxusernginxworker_processes1error_log/usr/local/nginx/logs/nginx_error.log warnpi

centos中安装nginx
user nginx;worker_processes 1;error_log /usr/local/nginx/logs/nginx_error.log warn;pid /usr/local/nginx/logs/nginx.pid;worker_rlimit_nofile 51200;events { use epoll; worker_connections 51200;}http { include mime.types; default_type application/octet-stream; #charset gb2312; log_format access '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; access_log /usr/local/nginx/logs/access.log access; server_names_hash_bucket_size 128; client_header_buffer_size 32k; large_client_header_buffers 4 32k; sendfile on; tcp_nopush on; keepalive_timeout 60; tcp_nodelay on; #gzip on; #include /etc/nginx/conf.d/*.conf; upstream abc.com{ server 192.168.16.100:8080; server 192.168.16.100:18080; } server{ listen 80; server_name www.abc.com; index index.php index.html index.htm; root /http; location /nginxstatus{ stub_status on; access_log off; } location /{ proxy_pass http://abc.com; proxy_redirect off; proxy_set_header X-Real-IP$remote_addr; proxy_set_header Host $http_host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; #proxy_set_header Host $host; } client_max_body_size 10m; client_body_buffer_size 128k; proxy_connect_timeout 600; proxy_read_timeout 600; proxy_send_timeout600; proxy_buffer_size 8k; proxy_buffers4 32k; proxy_busy_buffers_size64k; proxy_temp_file_write_size64k; }}

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nginx -s stop 更新配置线关闭nginx

必须是root用户 su root,才能执行

chown 当前用户 nginx.conf 才能保存

主机无法访问虚拟机centos中的nginx(http://vm-centos/nginxstatus),关闭虚拟机的防火墙--ok

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Jmeter终于可以超过511个并发了,测试1024对2*tomcat(200并发),大约是8s

但是10240个并发时,大约是开始有1000多个失败,

centos的默认文件句柄数多少?

?ulimit -SHn 51200 #设置打开文件句柄

ulimit -a

open file =1024

这个值变动后好像没有什么反应。

nginx(centos,1cpu,connection=10240)+2*tomcat(windows7,500并发)

?但是当connect=1024时,并发512,出现连接io失败

修改为2cpu,connection=1024时,并发1024,还是出现少量失败

当2cpu+(conn=10240),1024并发,平均耗时2050ms;500并发(64ms);800(632ms)

调整了句柄数为51200没有影响

性能最终测试::

worker_processes=2,worker_connections=51200+2*tomcat(windows7,maxThreads=1024,acceptCount=500)

1)tomcat配置

connectionTimeout="20000"
?????????????? redirectPort="8443"
??? ??? ??? ??? maxThreads="1024"
??? ??? ??? ??? minSpareThreads="300"
??? ??? ??? ??? acceptCount="500"
??? ??? ??? ??? enableLookups="false"

2)Jmeter配置

set HEAP=-Xms2048m -Xmx2048m
set NEW=-XX:NewSize=512m -XX:MaxNewSize=512m
set SURVIVOR=-XX:SurvivorRatio=8 -XX:TargetSurvivorRatio=50%
set TENURING=-XX:MaxTenuringThreshold=2
set RMIGC=-Dsun.rmi.dgc.client.gcInterval=600000 -Dsun.rmi.dgc.server.gcInterval=600000
set PERM=-XX:PermSize=128m -XX:MaxPermSize=128m

3)结果

并发1024::平均2260ms

并发2048::平均3288ms

并发4096::失败105

并发3072::失败76

worker_processes=2,worker_connections=51200+

2*tomcat(windows7,maxThreads=2048,acceptCount=800)

结果:还是少量失败

创建4个tomcat,可惜系统开始卡机了,没法子测试啦

并发1024::平均1664ms

并发2048::平均3927ms,已经不太真实了,测试环境不足!没啥意义了

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测试代码jsp

<html><%@ page language="java"%> <%@ page contentType="text/html; charset=utf-8"%> <%@ page import="java.util.*"%><!-- 获取系统时间必须导入的  --><%@ page import="java.text.*"%><!-- 获取系统时间必须导入的 --><body>test---tomcat<%System.out.println("=========" + new Date() + "=================="); Thread.sleep(10000);System.out.println("=========" + new Date() + "=================="); %></body></html>

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