I just installed OpenJDK 7 on Ubuntu 10.04 LTS under VirtualBox (one core, 256 MB). I wanted to run a quick test to see how the new JDK7 Async channel APIs were performing in comparison with node. A simple test of a hello world running on a single core shows that the JVM truly has what it takes to be the best runtime for network servers. Most notably, compare the distribution of response times, especially at 99%. The advantage the JVM is showing might be enough to comfortably fit Rhino onto it.
Here are the numbers from Apache benchmark. First, Java AIO (build b127):
brunofr@ubuntu-vm:~$ ab -n 30000 -c 300 http://127.0.0.1:8080/
Concurrency Level: 300
Time taken for tests: 4.908 seconds
Complete requests: 30000
Requests per second: 6112.65 [#/sec] (mean)
Time per request: 49.079 [ms] (mean)
Transfer rate: 567.26 [Kbytes/sec] received
Percentage of the requests served within a certain time (ms)
50% 8
66% 8
75% 9
80% 11
90% 12
95% 13
98% 14
99% 18
100% 4553 (longest request)
And then nodejs (from Ryan's branch):
brunofr@ubuntu-vm:~$ ab -n 30000 -c 300 http://127.0.0.1:8124/
Concurrency Level: 300
Time taken for tests: 8.140 seconds
Complete requests: 30000
Requests per second: 3685.69 [#/sec] (mean)
Time per request: 81.396 [ms] (mean)
Transfer rate: 273.55 [Kbytes/sec] received
Percentage of the requests served within a certain time (ms)
50% 35
66% 44
75% 50
80% 53
90% 60
95% 65
98% 75
99% 86
100% 3285 (longest request)
Note that right now AsynchronousChannel only has platform support on Linux and Solaris (you'll get a java.lang.InternalError: platform not recognized running on OSX).
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