curl http://127.0.0.1:8010/api.jsp
curl: (7) Couldn't connect to server

wget http://127.0.0.1:8010/api.jsp
--2019-10-30 12:58:58--  http://127.0.0.1:8010/api.jsp
Connecting to 127.0.0.1:8010... failed: Can't assign requested address.
Retrying.

Can't assign requested address.

cat /proc/sys/net/ipv4/ip_local_port_range
echo 1024 65535 > /proc/sys/net/ipv4/ip_local_port_range




Use KeepAlive 
Advanceed   实现 选择 HttpClient4
jmeter.properties   httpclient4.idletimeout=60000

./jmeter -n -t xxx.jmx



 tomcat长连接配置 

 linux性能分析及调优