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Commitca6d4b8

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tokio-postgres: buffer sockets to avoid excessive syscalls
The current implementation forwards all read requests to the operatingsystem through the socket causing excessive system calls. The effect ismagnified when the underlying Socket is wrapped around a TLSimplementation.This commit changes the underlying socket to be read-buffered by defaultwith a buffer size of 16K, following the implementation of the officialclient.Signed-off-by: Petros Angelatos <petrosagg@gmail.com>
1 parent52de269 commitca6d4b8

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2 files changed

+6
-4
lines changed

2 files changed

+6
-4
lines changed

‎postgres-native-tls/src/lib.rs‎

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -51,7 +51,7 @@ use std::future::Future;
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use std::io;
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use std::pin::Pin;
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use std::task::{Context,Poll};
54-
use tokio::io::{AsyncRead,AsyncWrite,ReadBuf};
54+
use tokio::io::{AsyncRead,AsyncWrite,BufReader,ReadBuf};
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use tokio_postgres::tls;
5656
#[cfg(feature ="runtime")]
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use tokio_postgres::tls::MakeTlsConnect;
@@ -115,6 +115,7 @@ where
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typeFuture =Pin<Box<dynFuture<Output =Result<TlsStream<S>, native_tls::Error>> +Send>>;
116116

117117
fnconnect(self,stream:S) ->Self::Future{
118+
let stream =BufReader::with_capacity(8192, stream);
118119
let future =asyncmove{
119120
let stream =self.connector.connect(&self.domain, stream).await?;
120121

@@ -126,7 +127,7 @@ where
126127
}
127128

128129
/// The stream returned by `TlsConnector`.
129-
pubstructTlsStream<S>(tokio_native_tls::TlsStream<S>);
130+
pubstructTlsStream<S>(tokio_native_tls::TlsStream<BufReader<S>>);
130131

131132
impl<S>AsyncReadforTlsStream<S>
132133
where

‎postgres-openssl/src/lib.rs‎

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -57,7 +57,7 @@ use std::pin::Pin;
5757
#[cfg(feature ="runtime")]
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use std::sync::Arc;
5959
use std::task::{Context,Poll};
60-
use tokio::io::{AsyncRead,AsyncWrite,ReadBuf};
60+
use tokio::io::{AsyncRead,AsyncWrite,BufReader,ReadBuf};
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use tokio_openssl::SslStream;
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use tokio_postgres::tls;
6363
#[cfg(feature ="runtime")]
@@ -140,6 +140,7 @@ where
140140
typeFuture =Pin<Box<dynFuture<Output =Result<TlsStream<S>,Self::Error>> +Send>>;
141141

142142
fnconnect(self,stream:S) ->Self::Future{
143+
let stream =BufReader::with_capacity(8192, stream);
143144
let future =asyncmove{
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let ssl =self.ssl.into_ssl(&self.domain)?;
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letmut stream =SslStream::new(ssl, stream)?;
@@ -182,7 +183,7 @@ impl Error for ConnectError {
182183
}
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184185
/// The stream returned by `TlsConnector`.
185-
pubstructTlsStream<S>(SslStream<S>);
186+
pubstructTlsStream<S>(SslStream<BufReader<S>>);
186187

187188
impl<S>AsyncReadforTlsStream<S>
188189
where

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