How to test apache.
Create 2 files:
testload.php
test.php
Create a php file testload.php that checks the existence of another file named test.php in the same directory of two CentOS 7 servers with the same hardware characteristics and load but with different MPM. One of them will use event and the other one will use prefork.
With ab, we will sent 50 (-c 50) concurrent requests at the same time and repeat the test 1000000 times
# ab -c 50 -n 100000 http://localhost/testload.php
200 simultaneous requests until 2000 requests are completed:
# ab -k -c 100 -n 2000 localhost/testload.php
Another test to localhost
PREFORK
]# ab -c 50 -n 100000 http://localhost/index.html
This is ApacheBench, Version 2.3 <$Revision: 1430300 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking localhost (be patient)
Completed 10000 requests
Completed 20000 requests
Completed 30000 requests
^C
Server Software: Apache/2.4.6
Server Hostname: localhost
Server Port: 80
Document Path: /index.html
Document Length: 15167 bytes
Concurrency Level: 50
Time taken for tests: 3596.808 seconds
Complete requests: 34570
Failed requests: 0
Write errors: 0
Non-2xx responses: 34571
Total transferred: 537122767 bytes
HTML transferred: 524331497 bytes
Requests per second: 9.61 [#/sec] (mean)
Time per request: 5202.210 [ms] (mean)
Time per request: 104.044 [ms] (mean, across all concurrent requests)
Transfer rate: 145.83 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.1 0 3
Processing: 213 5198 241.5 5203 10154
Waiting: 174 4428 227.6 4435 9302
Total: 214 5198 241.5 5203 10154
Percentage of the requests served within a certain time (ms)
50% 5203
66% 5264
75% 5302
80% 5327
90% 5391
95% 5449
98% 5532
99% 5617
100% 10154 (longest request)