RGBCube/uutils-coreutils
1
Fork 0
mirror of https://github.com/RGBCube/uutils-coreutils synced 2025-07-30 12:37:49 +00:00
Code Issues Activity

cat: Use larger splice size

Browse source 
This raises performance by 10-20% or so.
This commit is contained in:
Jan Verbeek 2021-08-27 20:12:12 +02:00
parent d002810a47
commit 23647be07a
1 changed files with 2 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

3
src/uu/cat/src/splice.rs
View file

@ -5,6 +5,7 @@ use std::os::unix::io::{AsRawFd, RawFd};
use uucore::pipes::{pipe, splice, splice_exact}; use uucore::pipes::{pipe, splice, splice_exact};
const SPLICE_SIZE: usize = 1024 * 128;
const BUF_SIZE: usize = 1024 * 16; const BUF_SIZE: usize = 1024 * 16;
/// This function is called from `write_fast()` on Linux and Android. The /// This function is called from `write_fast()` on Linux and Android. The
@ -22,7 +23,7 @@ pub(super) fn write_fast_using_splice<R: FdReadable>(
let (pipe_rd, pipe_wr) = pipe()?; let (pipe_rd, pipe_wr) = pipe()?;
loop { loop {
match splice(&handle.reader, &pipe_wr, BUF_SIZE) { match splice(&handle.reader, &pipe_wr, SPLICE_SIZE) {
Ok(n) => { Ok(n) => {
if n == 0 { if n == 0 {
return Ok(false); return Ok(false);