102 lines
2.7 KiB
Rust
102 lines
2.7 KiB
Rust
#[macro_use]
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extern crate criterion;
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extern crate bincode;
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extern crate serde;
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extern crate serde_derive;
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extern crate serde_json;
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extern crate tempfile;
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use chgk_ledb_lib::db::{Reader, Writer, WriterOpts};
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use chgk_ledb_lib::questions::{Question, QuestionsConverter};
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use chgk_ledb_lib::source::ReadSourceQuestionsBatches;
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use std::path::Path;
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use std::time::Duration;
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use std::{fs, io};
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use criterion::{BatchSize, Criterion};
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use tempfile::{tempdir, NamedTempFile};
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const ZIP_FILENAME: &str = "../json.zip";
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const NEW_DB_FILENAME: &str = "../db.dat";
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const N: usize = 4096;
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fn read_sample() -> Vec<Question> {
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let zip_file = fs::File::open(ZIP_FILENAME).unwrap();
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let zip_reader = io::BufReader::new(zip_file);
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let archive = zip::ZipArchive::new(zip_reader).unwrap();
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let mut source_questions = archive.source_questions();
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source_questions
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.convert()
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.take(N)
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.enumerate()
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.map(|(num, mut question)| {
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question.num = 1 + num as u32;
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question
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})
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.collect()
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}
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fn prepare_db_writer<P: AsRef<Path>>(path: P) -> Writer<Question> {
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let opts = WriterOpts {
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compress_lvl: 1,
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data_buf_size: 100 * 1024 * 1024,
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out_buf_size: 100 * 1024 * 1024,
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current_buf_size: 10240,
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};
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Writer::new(path, opts).expect("new writer")
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}
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fn questions_read(c: &mut Criterion) {
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c.bench_function("questions_read", |b| {
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b.iter_batched(
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|| {
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let reader: Reader<Question> =
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Reader::new(NEW_DB_FILENAME, 4096).expect("new reader");
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reader.into_iter().take(N)
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},
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|reader| {
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for item in reader {
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drop(item);
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}
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},
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BatchSize::SmallInput,
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)
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});
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}
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fn questions_write(c: &mut Criterion) {
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let dir = tempdir().expect("tempdir");
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c.bench_function("questions_write", |b| {
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b.iter_batched(
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|| {
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let tmpfile = NamedTempFile::new_in(dir.path())
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.expect("new tempfile")
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.into_temp_path();
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let src = read_sample().into_iter();
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let writer = prepare_db_writer(&tmpfile);
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(src, writer)
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},
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|(mut src, mut writer)| {
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writer.load(&mut src).unwrap();
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writer.finish().unwrap();
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},
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BatchSize::SmallInput,
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)
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});
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}
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fn config() -> Criterion {
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Criterion::default()
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.sample_size(40)
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.warm_up_time(Duration::from_secs(7))
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.measurement_time(Duration::from_secs(20))
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}
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criterion_group! {name=benches; config = config(); targets = questions_read, questions_write}
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criterion_main!(benches);
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