proxmox-backup/examples/test_chunk_speed2.rs
Thomas Lamprecht a22d338831 examples: rust fmt
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2022-04-10 17:44:34 +02:00

62 lines
1.6 KiB
Rust

use anyhow::Error;
use futures::*;
extern crate proxmox_backup;
use pbs_client::ChunkStream;
// Test Chunker with real data read from a file.
//
// To generate some test input use:
// # dd if=/dev/urandom of=random-test.dat bs=1M count=1024 iflag=fullblock
//
// Note: I can currently get about 830MB/s
fn main() {
if let Err(err) = proxmox_async::runtime::main(run()) {
panic!("ERROR: {}", err);
}
}
async fn run() -> Result<(), Error> {
let file = tokio::fs::File::open("random-test.dat").await?;
let stream = tokio_util::codec::FramedRead::new(file, tokio_util::codec::BytesCodec::new())
.map_ok(|bytes| bytes.to_vec())
.map_err(Error::from);
//let chunk_stream = FixedChunkStream::new(stream, 4*1024*1024);
let mut chunk_stream = ChunkStream::new(stream, None);
let start_time = std::time::Instant::now();
let mut repeat = 0;
let mut stream_len = 0;
while let Some(chunk) = chunk_stream.try_next().await? {
if chunk.len() > 16 * 1024 * 1024 {
panic!("Chunk too large {}", chunk.len());
}
repeat += 1;
stream_len += chunk.len();
println!("Got chunk {}", chunk.len());
}
let speed =
((stream_len * 1_000_000) / (1024 * 1024)) / (start_time.elapsed().as_micros() as usize);
println!(
"Uploaded {} chunks in {} seconds ({} MB/s).",
repeat,
start_time.elapsed().as_secs(),
speed
);
println!("Average chunk size was {} bytes.", stream_len / repeat);
println!(
"time per request: {} microseconds.",
(start_time.elapsed().as_micros()) / (repeat as u128)
);
Ok(())
}