I'm using AB tools , and I use the means to add concurrency to get the accurate max value of RPS(request per second) ,while I found that with the concurrency Increase, the latecy time increase , the RPS increase then reduce . Do that mean the maximum value of RPS is the capacity of server? If it is not correct, what's the initial design ideas of ab tools to test the performance of Web Server?
English is not my native language; please excuse typing errors. And I search the Internet but didn't find the systematic method to get the performance of server.