Nginx-High-concurrency stress test data

Thank you! Direct View online test data is as follows: webbench5000 concurrent 60 seconds to access the txt file! Upload image description (img.ask.csdn.netupload201501_14291_258_112015.png) webbench30000 concurrent 60 seconds to access the txt file! Refer to the following figure for more information: (img.ask.csdn.netupload2015020.142920.268_49750.png) webbench2000 concurrent 60-second access to php... nginxphp concurrency

Thank you!

Direct opinion online test data
The test data is as follows:
Webbench 5000 concurrent 60 s access to txt files

Webbench 30000 concurrent 60 s access to txt files

Webbench 2000 concurrent 60 s access to the PHP file only writes phpinfo ()

Webbench 10000 concurrent 60 s access to the PHP file only writes phpinfo ()

Top results of webbench 10000 concurrent 60 s

Test Environment
CPU 16-core memory 64 GB
System CentOS-6.5 64-bit
Nginx/1.0.13
Php5.6.7

Please kindly advise on the following questions
1. if the program performance is not considered, will there be more room for optimization in this system? how can we adjust the limit?
2. when 10000 concurrent accesses to php, the server load is not very high, and the ssd hard disk does not have raid. what is the bottleneck?

Some configuration parameters are attached below
Php-fpm.conf

Sysctl. conf

Nginx. conf