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wrk - a HTTP benchmarking tool
wrk is a modern HTTP benchmarking tool capable of generating significant
load when run on a single multi-core CPU. It combines a multithreaded
design with scalable event notification systems such as epoll and kqueue.
Basic Usage
wrk -t8 -c400 -r10m http://localhost:8080/index.html
This runs wrk with 8 threads, keeping 400 connections open, and making a
total of 10 million HTTP GET requests to http://localhost:8080/index.html
Output:
Making 10000000 requests to http://localhost:8080/index.html
8 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 439.75us 350.49us 7.60ms 92.88%
Req/Sec 61.13k 8.26k 72.00k 87.54%
10000088 requests in 19.87s, 3.42GB read
Requests/sec: 503396.23
Transfer/sec: 176.16MB
Benchmarking Tips
The machine running wrk must have a sufficient number of ephemeral ports
available and closed sockets should be recycled quickly. To handle the
initial connection burst the server's listen(2) backlog should be greater
than the number of concurrent connections being tested.
Acknowledgements
wrk contains code from a number of open source projects including the
'ae' event loop from redis, the nginx/joyent/node.js 'http-parser' and
the Tiny Mersenne Twister PRNG. Please consult the NOTICE file for
licensing details.