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Improve benchmark tool, report totals

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This commit is contained in:
Ivan Smirnov 2021-12-30 13:19:02 +03:00
parent 96a8d559ad
commit 0c8d7c64e8
1 changed files with 128 additions and 42 deletions
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170
qoi-bench/src/main.rs
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@ -1,3 +1,4 @@
use std::cmp::Ordering;
use std::fs::{self, File};
use std::path::{Path, PathBuf};
use std::ptr;
@ -70,6 +71,7 @@ fn find_pngs(paths: &[PathBuf]) -> Result<Vec<PathBuf>> {
Ok(out)
}
#[derive(Clone)]
struct Image {
pub width: u32,
pub height: u32,
@ -202,53 +204,71 @@ impl Codec for CodecQoiC {
}
}
#[derive(Clone)]
struct BenchResult {
pub codec: String,
pub encode_sec: Vec<f64>,
pub decode_sec: Vec<f64>,
pub size_encoded: usize,
pub encode_sec: Vec<f64>,
}
impl BenchResult {
pub fn new(codec: impl AsRef<str>, mut decode_sec: Vec<f64>, mut encode_sec: Vec<f64>) -> Self {
decode_sec.sort_by(|a, b| a.partial_cmp(&b).unwrap_or(Ordering::Equal));
encode_sec.sort_by(|a, b| a.partial_cmp(&b).unwrap_or(Ordering::Equal));
let codec = codec.as_ref().into();
Self { codec, decode_sec, encode_sec }
}
pub fn average_decode_sec(&self, use_median: bool) -> f64 {
if use_median {
self.decode_sec[self.decode_sec.len() / 2]
} else {
mean(&self.decode_sec)
}
}
pub fn average_encode_sec(&self, use_median: bool) -> f64 {
if use_median {
self.encode_sec[self.encode_sec.len() / 2]
} else {
mean(&self.encode_sec)
}
}
}
#[derive(Clone)]
struct ImageBench {
img: Image,
sec_allowed: f64,
results: Vec<BenchResult>,
n_pixels: usize,
}
impl ImageBench {
pub fn new(img: Image, sec_allowed: f64) -> Self {
Self { img, sec_allowed, results: vec![] }
pub fn new(img: &Image) -> Self {
Self { results: vec![], n_pixels: img.n_pixels() }
}
pub fn run<C: Codec>(&mut self) -> Result<()> {
let (encoded, t_encode) = timeit(|| C::encode(&self.img));
pub fn run<C: Codec>(&mut self, img: &Image, sec_allowed: f64) -> Result<()> {
let (encoded, t_encode) = timeit(|| C::encode(img));
let encoded = encoded?;
let (decoded, t_decode) = timeit(|| C::decode(&encoded, &self.img));
let (decoded, t_decode) = timeit(|| C::decode(&encoded, img));
let decoded = decoded?;
ensure!(decoded.as_slice() == self.img.data.as_slice(), "decoded data doesn't roundtrip");
ensure!(decoded.as_slice() == img.data.as_slice(), "decoded data doesn't roundtrip");
let n_encode = (self.sec_allowed / 2. / t_encode.as_secs_f64()).max(2.).ceil() as usize;
let n_encode = (sec_allowed / 2. / t_encode.as_secs_f64()).max(2.).ceil() as usize;
let mut encode_tm = Vec::with_capacity(n_encode);
for _ in 0..n_encode {
encode_tm.push(timeit(|| C::encode_bench(&self.img)).1);
encode_tm.push(timeit(|| C::encode_bench(img)).1);
}
encode_tm.sort_unstable();
let encode_sec = encode_tm.iter().map(Duration::as_secs_f64).collect();
let n_decode = (self.sec_allowed / 2. / t_decode.as_secs_f64()).max(2.).ceil() as usize;
let n_decode = (sec_allowed / 2. / t_decode.as_secs_f64()).max(2.).ceil() as usize;
let mut decode_tm = Vec::with_capacity(n_decode);
for _ in 0..n_decode {
decode_tm.push(timeit(|| C::decode_bench(&encoded, &self.img)).1);
decode_tm.push(timeit(|| C::decode_bench(&encoded, img)).1);
}
decode_tm.sort_unstable();
let decode_sec = decode_tm.iter().map(Duration::as_secs_f64).collect();
self.results.push(BenchResult {
codec: C::name().to_owned(),
encode_sec,
decode_sec,
size_encoded: encoded.len(),
});
self.results.push(BenchResult::new(C::name(), decode_sec, encode_sec));
Ok(())
}
@ -259,33 +279,85 @@ impl ImageBench {
print!("{:>w$}", "encode:ms", w = w_col);
print!("{:>w$}", "decode:mp/s", w = w_col);
print!("{:>w$}", "encode:mp/s", w = w_col);
print!("{:>w$}", "compression", w = w_col);
print!("{:>w$}", "output:kb", w = w_col);
println!();
for r in &self.results {
let (decode_sec, encode_sec) = if use_median {
(r.decode_sec[r.decode_sec.len() / 2], r.encode_sec[r.encode_sec.len() / 2])
} else {
(mean(&r.decode_sec), mean(&r.encode_sec))
};
let mpixels = self.img.n_pixels() as f64 / 1e6;
let decode_sec = r.average_decode_sec(use_median);
let encode_sec = r.average_encode_sec(use_median);
let mpixels = self.n_pixels as f64 / 1e6;
let (decode_mpps, encode_mpps) = (mpixels / decode_sec, mpixels / encode_sec);
let comp_ratio_pct = r.size_encoded as f64 / self.img.data.len() as f64 * 1e2;
let size_kb = r.size_encoded as f64 / 1024.;
print!("{:<w$}", r.codec, w = w_name);
print!("{:>w$.2}", decode_sec * 1e3, w = w_col);
print!("{:>w$.2}", encode_sec * 1e3, w = w_col);
print!("{:>w$.1}", decode_mpps, w = w_col);
print!("{:>w$.1}", encode_mpps, w = w_col);
print!("{:>w$.2}%", comp_ratio_pct, w = w_col - 1);
print!("{:>w$.1}", size_kb, w = w_col);
println!();
}
}
}
fn bench_png(filename: &Path) -> Result<()> {
#[derive(Default)]
struct BenchTotals {
results: Vec<ImageBench>,
}
impl BenchTotals {
pub fn new() -> Self {
Self::default()
}
pub fn update(&mut self, b: &ImageBench) {
self.results.push(b.clone())
}
pub fn report(&self, use_median: bool) {
if self.results.is_empty() {
return;
}
let codec_names: Vec<_> = self.results[0].results.iter().map(|r| r.codec.clone()).collect();
let n_codecs = codec_names.len();
let (mut total_decode_sec, mut total_encode_sec, mut total_size) =
(vec![0.; n_codecs], vec![0.; n_codecs], 0);
for r in &self.results {
total_size += r.n_pixels;
for i in 0..n_codecs {
// sum of medians is not the median of sums, but w/e, good enough here
total_decode_sec[i] += r.results[i].average_decode_sec(use_median);
total_encode_sec[i] += r.results[i].average_encode_sec(use_median);
}
}
let (w_name, w_col) = (11, 13);
println!("---");
println!(
"Overall results: ({} images, {:.1} MB):",
self.results.len(),
total_size as f64 / 1024. / 1024.
);
println!("---");
print!("{:<w$}", "codec", w = w_name);
print!("{:>w$}", "decode:ms", w = w_col);
print!("{:>w$}", "encode:ms", w = w_col);
print!("{:>w$}", "decode:mp/s", w = w_col);
print!("{:>w$}", "encode:mp/s", w = w_col);
println!();
for (i, codec_name) in codec_names.iter().enumerate() {
let decode_sec = total_decode_sec[i];
let encode_sec = total_encode_sec[i];
let mpixels = total_size as f64 / 1e6;
let (decode_mpps, encode_mpps) = (mpixels / decode_sec, mpixels / encode_sec);
print!("{:<w$}", codec_name, w = w_name);
print!("{:>w$.2}", decode_sec * 1e3, w = w_col);
print!("{:>w$.2}", encode_sec * 1e3, w = w_col);
print!("{:>w$.1}", decode_mpps, w = w_col);
print!("{:>w$.1}", encode_mpps, w = w_col);
println!();
}
}
}
fn bench_png(filename: &Path, seconds: f64, use_median: bool) -> Result<ImageBench> {
let f = filename.to_string_lossy();
let img = read_png(filename).context(format!("error reading PNG file: {}", f))?;
let size_kb = fs::metadata(filename)?.len() / 1024;
@ -294,17 +366,33 @@ fn bench_png(filename: &Path) -> Result<()> {
"{} ({}x{}:{}, {} KB, {:.1}MP)",
f, img.width, img.height, img.channels, size_kb, mpixels
);
let mut bench = ImageBench::new(img, 5.);
bench.run::<CodecQoiC>()?;
bench.run::<CodecQoiFast>()?;
bench.report(true);
let mut bench = ImageBench::new(&img);
bench.run::<CodecQoiC>(&img, seconds)?;
bench.run::<CodecQoiFast>(&img, seconds)?;
bench.report(use_median);
Ok(bench)
}
fn bench_suite(files: &[PathBuf], seconds: f64, use_median: bool) -> Result<()> {
let mut totals = BenchTotals::new();
for file in files {
totals.update(&bench_png(file, seconds, use_median)?);
}
totals.report(use_median);
Ok(())
}
#[derive(Debug, StructOpt)]
struct Args {
/// Files or directories containing png images.
#[structopt(parse(from_os_str))]
paths: Vec<PathBuf>,
/// Number of seconds allocated for each image/codec.
#[structopt(short, long, default_value = "1")]
seconds: f64,
/// Use average (mean) instead of the median.
#[structopt(short, long)]
average: bool,
}
fn main() -> Result<()> {
@ -312,8 +400,6 @@ fn main() -> Result<()> {
ensure!(!args.paths.is_empty(), "no input paths given");
let files = find_pngs(&args.paths)?;
ensure!(!files.is_empty(), "no PNG files found in given paths");
for file in &files {
bench_png(file)?;
}
bench_suite(&files, args.seconds, !args.average)?;
Ok(())
}