Raw read numbers

gistfile1.md

A simple test of read performance, newsched (-O) vs. node. The server command is yes | netcat -v -v -l 127.0.0.1 2931.

node:

var net = require('net');
var total = 0;
var client = net.connect(2931,
                         function() {
                             console.log('connected');
});

client.on('data', function(data) {
    total = total + data.length;
    if (total > 500000000) {
        client.end();
    }
});

rust:

    do run_in_bare_thread {
        let mut sched = ~UvEventLoop::new_scheduler();
        let addr = ip4addr("127.0.0.1", 2931);

        let client_task = ~do Task::new(&mut sched.stack_pool) {
            do Scheduler::local |sched| {
                let io = sched.event_loop.io().unwrap();
                let mut stream = io.connect(addr).unwrap();
                let mut buf = [0, .. 2048];
                let mut total_bytes_read = 0;
                while total_bytes_read < 500000000 {
                    let nread = stream.read(buf).unwrap();
                    total_bytes_read += nread;
                }
                stream.close();
            }
        };

        sched.task_queue.push_back(client_task);
        sched.run();
    }

node:

real    0m4.426s
user    0m0.560s
sys     0m0.560s

real    0m4.495s
user    0m0.508s
sys     0m0.648s

real    0m4.455s
user    0m0.524s
sys     0m0.600s

rust:

real    0m4.384s
user    0m0.548s
sys     0m0.496s

real    0m4.346s
user    0m0.496s
sys     0m0.532s

real    0m4.378s
user    0m0.488s
sys     0m0.536s

perf:

 48.86%  newrt.stage1-x8  [kernel.kallsyms]                      [k] 0xffffffff8103ed3a                                                                                                                             ◆
  3.53%  newrt.stage1-x8  librustrt.so                           [.] upcall_call_shim_on_c_stack                                                                                                                    ▒
  2.92%  newrt.stage1-x8  libc-2.15.so                           [.] _int_free                                                                                                                                      ▒
  2.52%  newrt.stage1-x8  libpthread-2.15.so                     [.] pthread_getspecific                                                                                                                            ▒
  2.25%  newrt.stage1-x8  libc-2.15.so                           [.] _int_malloc                                                                                                                                    ▒
  2.11%  newrt.stage1-x8  libc-2.15.so                           [.] malloc                                                                                                                                         ▒
  1.52%  newrt.stage1-x8  libcore-c3ca5d77d81b46c1-0.6.so        [.] private::exchange_alloc::malloc::_e64b1b363cf9a6a::_06                                                                                         ▒
  1.18%  newrt.stage1-x8  newrt.stage1-x86_64-unknown-linux-gnu  [.] sched::__extensions__::meth_3991::block_running_task_and_then::_49e6b7fd24c3128::_00                                                           ▒
  1.14%  newrt.stage1-x8  libcore-c3ca5d77d81b46c1-0.6.so        [.] rt::rt_exchange_free::_bea361ae47773659::_06                                                                                                   ▒
  1.13%  newrt.stage1-x8  newrt.stage1-x86_64-unknown-linux-gnu  [.] sched::__extensions__::meth_3953::run_cleanup_jobs::_e8adef6004193a7::_00                                                                      ▒
  1.11%  newrt.stage1-x8  libc-2.15.so                           [.] __memset_sse2                                                                                                                                  ▒
  1.03%  newrt.stage1-x8  librustrt.so                           [.] uv__read                                                                                                                                       ▒
  1.02%  newrt.stage1-x8  librustrt.so                           [.] upcall_call_shim_on_rust_stack                                                                                                                 ▒
  0.99%  newrt.stage1-x8  librustrt.so                           [.] uv__io_stop                                                                                                                                    ▒
  0.88%  newrt.stage1-x8  newrt.stage1-x86_64-unknown-linux-gnu  [.] glue_drop_3578                                                                                                                                 ▒
  0.88%  newrt.stage1-x8  newrt.stage1-x86_64-unknown-linux-gnu  [.] uvio::__extensions__::meth_5489::read::_17aaf6d4c8c3c14::_00                                                                                   ▒
  0.85%  newrt.stage1-x8  librustrt.so                           [.] uv__io_poll                                                                                                                                    ▒
  0.82%  newrt.stage1-x8  newrt.stage1-x86_64-unknown-linux-gnu  [.] uv::__extensions__::read_cb::__rust_stack_shim                                                                                                 ▒
  0.81%  newrt.stage1-x8  newrt.stage1-x86_64-unknown-linux-gnu  [.] uvio::__extensions__::read::anon::anon::anon::expr_fn_5519                                                                                     ▒
  0.75%  newrt.stage1-x8  librustrt.so                           [.] uv__io_start                                                                                                                                   ▒
  0.69%  newrt.stage1-x8  librustrt.so                           [.] swap_registers                                                                                                                                 ▒