翻译自: http://lowlatencyweb.wordpress.com/2012/03/20/500000-requestssec-modern-http-servers-are-fast/
现在的HTTP服务器运行在某些计算上, 表现很差, 连接过长, 连接时间过慢, 等等原因. 下面一张图就是在Unbutu系统中安装了Nginx 1.0.14, 测试并发访问index.html的一些数据.以及下表的测试环境.
软件
这里只讨论Linux, 首先我们需要设置下系统网络层的参数
echo "2048 64512" > /proc/sys/net/ipv4/ip_local_port_range echo "1" > /proc/sys/net/ipv4/tcp_tw_recycle echo "1" > /proc/sys/net/ipv4/tcp_tw_reuse echo "10" > /proc/sys/net/ipv4/tcp_fin_timeout echo "65536" > /proc/sys/net/core/somaxconn echo "65536" > /proc/sys/net/ipv4/tcp_max_syn_backlog echo "262144" > /proc/sys/net/netfilter/nf_conntrack_max
HTTP服务器为nginx 1.0.14, configure & build
worker_processes 16;
worker_rlimit_nofile 262144;
daemon off;
events {
use epoll;
worker_connections 16384;
}
error_log error.log;
pid /dev/null;
http {
sendfile on;
tcp_nopush on;
keepalive_requests 100;
open_file_cache max=100;
gzip off;
gzip_min_length 1024;
access_log off;
server {
listen *:8080 backlog=16384;
location / {
root html;
index index.html;
}
}
}
硬件部分
是双核Intel至强5670, 24G内存. The X5670 has 6 cores @ 2.93 GHz, 2 threads per core, /proc/cpuinfo shows 24 CPUs.
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