Tool: Use siege to do Web server pressure test

With "web pressure measurement" keyword search, can find a lot of tools for pressure measurement, such as AB, Http_load, Webbench, siege these, but today is not to compare these tools, after all, we just want a result. " This article mainly introduces siege, because siege is the above four, on the Mac installed and use the most convenient, so decisive is it!

Preparatory work

Before the test starts, you need to make sure that you are open files big enough, otherwise you will report an TOO MANY FILES OPEN error that can be ulimit -a viewed, such as:

Use ulimit -n 10000 to modify the value. However, this modification is not permanent, closing the terminal session and restoring it back.

Installation

brew install siege

Use

siege -c 1000 -t 5s URLsiege -c 1000 -t 5s -f  URL_File_Name

The above is siege the two methods of use, the first is to test the specified site, the second is a number of URLs contained in the file for batch testing.

• -cConcurrency number

• -tThe pressure test time can be added to the unit after the time, the specific help, the above indicates that the pressure measurement time lasts 5 seconds

• -rRepeat the number of times, and the -t expression is different, but the same meaning, set a can

• -fContains the text name of the URL

• -bBenchmark mode, no delay between requests

Output results

• Transactions total number of tests

• Availability Success Rate

• Elapsed Time Total

• Data transferred Total transfer

• Response Time Responses

• Transaction rate processing Requests per second

• Throughput average data transfer per second

• Concurrency actual maximum concurrency

• Successful transactions successful processing times

• Failed transactions number of failed processing requests

• Longest transaction The longest time to transfer

• Shortest transaction The shortest time spent in transmission

Finally, the following Siege can support Get/post two kinds of requests, but the format is slightly different, and the above list is only Siege part of the parameters, Siege there are many other parameters, please refer to the manual.

Tool: Use siege to do Web server pressure test