Apache Benchmark - concurrency and number of requests

Question

The benchmark documentation says concurrency is how many requests are done simultaneously, while number of requests is total number of requests. What I\'m wondering is, if I put

Answer 1

I see nothing wrong. Failed requests can increment more than one error each. That's how ab works.

There are various statically declared buffers of fixed length. Combined with the lazy parsing of the command line arguments, the response headers from the server and other external inputs, this might bite you.

You might notice for example that the previous node results have a similar count for 3 of the error counters. Most probably, from the 100 000 requests made only 8409 failed and not 25227.

Receive: 8409, Length: 8409, Exceptions: 8409