Load testing h2o on Raspberry Pi 2 H2O config $ cat /etc/h2o/h2o.conf listen: 8080 http1-request-timeout: 5 max-connections: 20480 num-threads: 1 hosts: localhost: paths: /: file.dir: /home/pi/www Sample content $ curl -D - http://192.168.0.6:8080/1 HTTP/1.1 200 OK Date: Sat, 11 Apr 2015 17:32:41 GMT Server: h2o/1.1.1 Connection: keep-alive Content-Length: 1 content-type: application/octet-stream last-modified: Sat, 11 Apr 2015 17:18:33 GMT etag: "55295769-1" Loadtest from MBA $ wrk -t1 -c100 -d60 http://192.168.0.6:8080/1 Running 1m test @ http://192.168.0.6:8080/1 1 threads and 100 connections Thread Stats Avg Stdev Max +/- Stdev Latency 10.62ms 1.90ms 27.32ms 94.48% Req/Sec 9.44k 1.26k 10.20k 91.17% 563883 requests in 1.00m, 121.00MB read Requests/sec: 9396.30 Transfer/sec: 2.02MB