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aquatic_http: serialize responses to a buffer ref instead of new vec

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This improves benchmark performance somewhat and performance
during load testing a bit too.
This commit is contained in:
Joakim Frostegård 2020-07-24 21:58:41 +02:00
parent 228511b3aa
commit fd68a5f603
7 changed files with 1101 additions and 1089 deletions
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12
aquatic_http/src/lib/network/mod.rs
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@ -1,5 +1,5 @@
use std::time::{Duration, Instant};
use std::io::ErrorKind;
use std::io::{ErrorKind, Cursor};
use std::sync::Arc;
use std::vec::Drain;
@ -81,6 +81,8 @@ pub fn run_poll_loop(
let mut poll_token_counter = Token(0usize);
let mut iter_counter = 0usize;
let mut response_buffer = [0u8; 4096];
let mut response_buffer = Cursor::new(&mut response_buffer[..]);
let mut local_responses = Vec::new();
loop {
@ -113,6 +115,7 @@ pub fn run_poll_loop(
if !(local_responses.is_empty() & (response_channel_receiver.is_empty())) {
send_responses(
&mut response_buffer,
local_responses.drain(..),
response_channel_receiver.try_iter(),
&mut connections
@ -301,6 +304,7 @@ pub fn handle_connection_read_event(
/// Read responses from channel, send to peers
pub fn send_responses(
buffer: &mut Cursor<&mut [u8]>,
local_responses: Drain<(ConnectionMeta, Response)>,
channel_responses: crossbeam_channel::TryIter<(ConnectionMeta, Response)>,
connections: &mut ConnectionMap,
@ -315,7 +319,11 @@ pub fn send_responses(
continue;
}
match established.send_response(&response.to_bytes()){
buffer.set_position(0);
let bytes_written = response.write(buffer).unwrap();
match established.send_response(&buffer.get_mut()[..bytes_written]){
Ok(()) => {
debug!("sent response");
},