1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // A port of the simplistic benchmark from
13 // http://github.com/PaulKeeble/ScalaVErlangAgents
15 // I *think* it's the same, more or less.
17 // This version uses pipes with a shared send endpoint. It should have
18 // different scalability characteristics compared to the select
21 use std::sync::mpsc::{channel, Sender, Receiver};
23 use std::thread::Thread;
24 use std::time::Duration;
27 fn move_out<T>(_x: T) {}
35 fn server(requests: &Receiver<request>, responses: &Sender<uint>) {
39 match requests.recv() {
40 Ok(request::get_count) => { responses.send(count.clone()).unwrap(); }
41 Ok(request::bytes(b)) => {
42 //println!("server: received {} bytes", b);
45 Err(..) => { done = true; }
49 responses.send(count).unwrap();
50 //println!("server exiting");
53 fn run(args: &[String]) {
54 let (to_parent, from_child) = channel();
55 let (to_child, from_parent) = channel();
57 let size = args[1].parse::<uint>().unwrap();
58 let workers = args[2].parse::<uint>().unwrap();
60 let mut result = None;
61 let mut p = Some((to_child, to_parent, from_parent));
62 let dur = Duration::span(|| {
63 let (to_child, to_parent, from_parent) = p.take().unwrap();
64 let mut worker_results = Vec::new();
65 for _ in range(0u, workers) {
66 let to_child = to_child.clone();
67 worker_results.push(Thread::spawn(move|| {
68 for _ in range(0u, size / workers) {
69 //println!("worker {}: sending {} bytes", i, num_bytes);
70 to_child.send(request::bytes(num_bytes)).unwrap();
72 //println!("worker {} exiting", i);
75 Thread::spawn(move|| {
76 server(&from_parent, &to_parent);
79 for r in worker_results.into_iter() {
83 //println!("sending stop message");
84 to_child.send(request::stop).unwrap();
86 result = Some(from_child.recv().unwrap());
88 let result = result.unwrap();
89 print!("Count is {}\n", result);
90 print!("Test took {} ms\n", dur.num_milliseconds());
91 let thruput = ((size / workers * workers) as f64) / (dur.num_milliseconds() as f64);
92 print!("Throughput={} per sec\n", thruput / 1000.0);
93 assert_eq!(result, num_bytes * size);
97 let args = os::args();
98 let args = if os::getenv("RUST_BENCH").is_some() {
99 vec!("".to_string(), "1000000".to_string(), "10000".to_string())
100 } else if args.len() <= 1u {
101 vec!("".to_string(), "10000".to_string(), "4".to_string())
103 args.into_iter().map(|x| x.to_string()).collect()
106 println!("{}", args);
107 run(args.as_slice());