mirror of
https://github.com/denoland/deno
synced 2024-08-28 12:29:31 +00:00
397 lines
10 KiB
Rust
397 lines
10 KiB
Rust
// Copyright 2022 evanwashere
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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use crate::colors;
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use std::str::FromStr;
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fn avg_to_iter_per_s(time: f64) -> String {
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let iter_per_s = 1e9 / time;
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let (decimals, fractional) = into_decimal_and_fractional_parts(iter_per_s);
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human_readable_decimal_with_fractional(decimals, fractional)
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}
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/// Return a tuple representing decimal part of provided float, as well as its
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/// first fractional digit.
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fn into_decimal_and_fractional_parts(num: f64) -> (i64, i64) {
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let mut decimal_part = num.floor() as i64;
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let fractional_part = {
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let decs = ((num - num.floor()) * 10.0).round();
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if decs == 10.0 {
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decimal_part += 1;
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0
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} else {
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decs as i64
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}
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};
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(decimal_part, fractional_part)
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}
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fn human_readable_decimal_with_fractional(
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decimal: i64,
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fractional: i64,
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) -> String {
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// Sweet one-liner to separate integer by commas from:
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// https://stackoverflow.com/a/67834588/21759102
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let fmt_decimal = decimal
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.to_string()
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.as_bytes()
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.rchunks(3)
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.rev()
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.map(std::str::from_utf8)
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.collect::<Result<Vec<&str>, _>>()
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.unwrap()
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.join(",");
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format!("{}.{}", fmt_decimal, fractional)
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}
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pub fn fmt_duration(time: f64) -> String {
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// SAFETY: this is safe since its just reformatting numbers
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unsafe {
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if time < 1e0 {
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return format!(
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"{} ps",
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f64::from_str(&format!("{:.2}", time * 1e3)).unwrap_unchecked()
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);
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}
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if time < 1e3 {
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return format!(
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"{} ns",
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f64::from_str(&format!("{:.2}", time)).unwrap_unchecked()
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);
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}
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if time < 1e6 {
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return format!(
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"{} µs",
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f64::from_str(&format!("{:.2}", time / 1e3)).unwrap_unchecked()
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);
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}
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if time < 1e9 {
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return format!(
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"{} ms",
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f64::from_str(&format!("{:.2}", time / 1e6)).unwrap_unchecked()
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);
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}
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if time < 1e12 {
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return format!(
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"{} s",
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f64::from_str(&format!("{:.2}", time / 1e9)).unwrap_unchecked()
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);
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}
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if time < 36e11 {
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return format!(
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"{} m",
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f64::from_str(&format!("{:.2}", time / 60e9)).unwrap_unchecked()
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);
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}
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format!(
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"{} h",
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f64::from_str(&format!("{:.2}", time / 36e11)).unwrap_unchecked()
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)
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}
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}
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pub mod cpu {
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#![allow(dead_code)]
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pub fn name() -> String {
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#[cfg(target_os = "linux")]
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return linux();
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#[cfg(target_os = "macos")]
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return macos();
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#[cfg(target_os = "windows")]
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return windows();
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#[allow(unreachable_code)]
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{
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"unknown".to_string()
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}
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}
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pub fn macos() -> String {
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let mut sysctl = std::process::Command::new("sysctl");
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sysctl.arg("-n");
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sysctl.arg("machdep.cpu.brand_string");
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return std::str::from_utf8(
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&sysctl
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.output()
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.map(|x| x.stdout)
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.unwrap_or(Vec::from("unknown")),
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)
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.unwrap()
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.trim()
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.to_string();
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}
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pub fn windows() -> String {
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let mut wmi = std::process::Command::new("wmic");
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wmi.arg("cpu");
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wmi.arg("get");
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wmi.arg("name");
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return match wmi.output() {
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Err(_) => String::from("unknown"),
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Ok(x) => {
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let x = String::from_utf8_lossy(&x.stdout);
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return x.lines().nth(1).unwrap_or("unknown").trim().to_string();
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}
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};
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}
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pub fn linux() -> String {
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let info = std::fs::read_to_string("/proc/cpuinfo").unwrap_or_default();
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for line in info.lines() {
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let mut iter = line.split(':');
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let key = iter.next().unwrap_or("");
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if key.contains("Hardware")
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|| key.contains("Processor")
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|| key.contains("chip type")
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|| key.contains("model name")
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|| key.starts_with("cpu type")
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|| key.starts_with("cpu model")
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{
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return iter.next().unwrap_or("unknown").trim().to_string();
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}
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}
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String::from("unknown")
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}
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}
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pub mod reporter {
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use super::*;
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#[derive(Clone, PartialEq)]
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pub struct Error {
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pub message: String,
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pub stack: Option<String>,
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}
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#[derive(Clone, PartialEq)]
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pub struct BenchmarkStats {
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pub avg: f64,
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pub min: f64,
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pub max: f64,
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pub p75: f64,
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pub p99: f64,
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pub p995: f64,
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}
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#[derive(Clone, PartialEq)]
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pub struct GroupBenchmark {
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pub name: String,
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pub group: String,
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pub baseline: bool,
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pub stats: BenchmarkStats,
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}
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#[derive(Clone, PartialEq)]
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pub struct Options {
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size: usize,
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pub avg: bool,
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pub min_max: bool,
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pub percentiles: bool,
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}
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impl Options {
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pub fn new(names: &[&str]) -> Options {
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Options {
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avg: true,
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min_max: true,
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size: size(names),
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percentiles: true,
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}
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}
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}
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pub fn size(names: &[&str]) -> usize {
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let mut max = 9;
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for name in names {
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if max < name.len() {
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max = name.len();
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}
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}
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2 + max
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}
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pub fn br(options: &Options) -> String {
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let mut s = String::new();
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s.push_str(&"-".repeat(
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options.size
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+ 14 * options.avg as usize
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+ 14 * options.avg as usize
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+ 24 * options.min_max as usize,
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));
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if options.percentiles {
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s.push(' ');
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s.push_str(&"-".repeat(9 + 10 + 10));
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}
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s
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}
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pub fn benchmark_error(n: &str, e: &Error, options: &Options) -> String {
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let size = options.size;
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let mut s = String::new();
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s.push_str(&format!("{:<size$}", n));
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s.push_str(&format!("{}: {}", colors::red("error"), e.message));
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if let Some(ref stack) = e.stack {
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s.push('\n');
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s.push_str(&colors::gray(stack).to_string());
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}
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s
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}
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pub fn header(options: &Options) -> String {
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let size = options.size;
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let mut s = String::new();
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s.push_str(&format!("{:<size$}", "benchmark"));
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if options.avg {
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s.push_str(&format!("{:>14}", "time (avg)"));
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s.push_str(&format!("{:>14}", "iter/s"));
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}
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if options.min_max {
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s.push_str(&format!("{:>24}", "(min … max)"));
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}
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if options.percentiles {
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s.push_str(&format!(" {:>9} {:>9} {:>9}", "p75", "p99", "p995"));
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}
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s
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}
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pub fn benchmark(
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name: &str,
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stats: &BenchmarkStats,
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options: &Options,
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) -> String {
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let size = options.size;
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let mut s = String::new();
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s.push_str(&format!("{:<size$}", name));
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if options.avg {
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s.push_str(&format!(
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"{:>30}",
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format!("{}/iter", colors::yellow(fmt_duration(stats.avg)))
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));
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s.push_str(&format!("{:>14}", avg_to_iter_per_s(stats.avg)));
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}
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if options.min_max {
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s.push_str(&format!(
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"{:>50}",
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format!(
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"({} … {})",
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colors::cyan(fmt_duration(stats.min)),
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colors::magenta(fmt_duration(stats.max))
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)
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));
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}
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if options.percentiles {
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s.push_str(&format!(
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" {:>22} {:>22} {:>22}",
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colors::magenta(fmt_duration(stats.p75)),
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colors::magenta(fmt_duration(stats.p99)),
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colors::magenta(fmt_duration(stats.p995))
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));
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}
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s
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}
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pub fn summary(benchmarks: &[GroupBenchmark]) -> String {
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let mut s = String::new();
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let mut benchmarks = benchmarks.to_owned();
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benchmarks.sort_by(|a, b| a.stats.avg.partial_cmp(&b.stats.avg).unwrap());
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let baseline = benchmarks
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.iter()
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.find(|b| b.baseline)
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.unwrap_or(&benchmarks[0]);
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s.push_str(&format!(
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"{}\n {}",
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colors::gray("summary"),
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colors::cyan_bold(&baseline.name)
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));
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for b in benchmarks.iter().filter(|b| *b != baseline) {
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let faster = b.stats.avg >= baseline.stats.avg;
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let diff = f64::from_str(&format!(
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"{:.2}",
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1.0 / baseline.stats.avg * b.stats.avg
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))
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.unwrap();
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let inv_diff = f64::from_str(&format!(
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"{:.2}",
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1.0 / b.stats.avg * baseline.stats.avg
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))
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.unwrap();
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s.push_str(&format!(
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"\n {}x {} than {}",
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if faster {
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colors::green(diff.to_string()).to_string()
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} else {
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colors::red(inv_diff.to_string()).to_string()
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},
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if faster { "faster" } else { "slower" },
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colors::cyan_bold(&b.name)
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));
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}
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s
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_into_decimal_and_fractional_parts() {
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assert_eq!(into_decimal_and_fractional_parts(10.0), (10, 0));
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assert_eq!(into_decimal_and_fractional_parts(10.1), (10, 1));
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assert_eq!(into_decimal_and_fractional_parts(10.2), (10, 2));
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assert_eq!(into_decimal_and_fractional_parts(10.3), (10, 3));
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assert_eq!(into_decimal_and_fractional_parts(10.4), (10, 4));
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assert_eq!(into_decimal_and_fractional_parts(10.5), (10, 5));
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assert_eq!(into_decimal_and_fractional_parts(10.6), (10, 6));
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assert_eq!(into_decimal_and_fractional_parts(10.7), (10, 7));
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assert_eq!(into_decimal_and_fractional_parts(10.8), (10, 8));
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assert_eq!(into_decimal_and_fractional_parts(10.9), (10, 9));
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assert_eq!(into_decimal_and_fractional_parts(10.99), (11, 0));
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}
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#[test]
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fn test_avg_to_iter_per_s() {
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assert_eq!(avg_to_iter_per_s(55.85), "17,905,103.0");
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assert_eq!(avg_to_iter_per_s(64_870_000.0), "15.4");
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assert_eq!(avg_to_iter_per_s(104_370_000.0), "9.6");
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assert_eq!(avg_to_iter_per_s(6_400_000.0), "156.3");
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assert_eq!(avg_to_iter_per_s(46_890_000.0), "21.3");
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assert_eq!(avg_to_iter_per_s(100_000_000.0), "10.0");
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assert_eq!(avg_to_iter_per_s(1_000_000_000.0), "1.0");
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assert_eq!(avg_to_iter_per_s(5_920_000_000.0), "0.2");
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}
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}
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