APACHEAB Test Indicator

Several indicators are important in the performance testing process:

1. Throughput rate (requests per second)

A quantitative description of the server concurrency processing capability, in REQS/S, which refers to the number of requests processed per unit of time in a concurrent user. The maximum number of requests per unit of time that a concurrent user could process, called the maximum throughput rate.

Remember: The throughput rate is based on the number of concurrent users. This statement represents two meanings:

A, throughput rate and number of concurrent users

b, different number of concurrent users, the throughput rate is generally different

Calculation formula: Total number of requests/time taken to complete these requests, i.e.

Request per second=complete Requests/time taken for tests

It is important to note that this value represents the overall performance of the current machine, and the larger the value the better.

2. Concurrent connections (the number of concurrent connections)

The number of concurrent connections refers to the number of requests received by the server at some point, simply speaking, is a session.

3. Number of concurrent users (Concurrency level)

To be aware of the difference between this concept and the number of concurrent connections, a user may produce multiple sessions at the same time, that is, the number of connections. Under http/1.1, IE7 supports two concurrent connections, IE8 supports 6 concurrent connections, FIREFOX3 supports 4 concurrent connections, so our number of concurrent users will have to be divided by this cardinality accordingly.

4. Average user request wait time (times per request)

Calculation formula: The amount of time spent processing all requests (total number of requests/concurrent users), i.e.:

Time per request=time taken for tests/(complete requests/concurrency level)

5. Average Server request Wait time (Request:across all concurrent requests)




1. Throughput rate
2. Number of concurrent connections
3. Number of concurrent users
4. Average user request Wait time
5. Average Server request Wait time

Apacheab Test Metrics