proxmox-backup/examples/test_chunk_speed2.rs
Wolfgang Bumiller a00888e93f fixup examples
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
2021-07-20 15:26:25 +02:00

54 lines
1.5 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) = pbs_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(())
}