From 47076e3c7c22fc7557f388ad3d47228b922da71e Mon Sep 17 00:00:00 2001 From: Pádraig Brady
Date: Tue, 20 Jul 2010 18:51:01 +0100
Subject: provide POSIX_FADV_SEQUENTIAL hint to appropriate utils
Following on from commit dae35bac, 01-03-2010,
"sort: inform the system about our input access pattern"
apply the same hint to all appropriate utils.
This currently gives around a 5% speedup for reading
large files from fast flash devices on GNU/Linux.
* src/base64.c: Call fadvise (..., FADVISE_SEQUENTIAL);
* src/cat.c: Likewise.
* src/cksum.c: Likewise.
* src/comm.c: Likewise.
* src/cut.c: Likewise.
* src/expand.c: Likewise.
* src/fmt.c: Likewise.
* src/fold.c: Likewise.
* src/join.c: Likewise.
* src/md5sum.c: Likewise.
* src/nl.c: Likewise.
* src/paste.c: Likewise.
* src/pr.c: Likewise.
* src/ptx.c: Likewise.
* src/shuf.c: Likewise.
* src/sum.c: Likewise.
* src/tee.c: Likewise.
* src/tr.c: Likewise.
* src/tsort.c: Likewise.
* src/unexpand.c: Likewise.
* src/uniq.c: Likewise.
* src/wc.c: Likewise, unless we don't actually read().
---
src/expand.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
(limited to 'src/expand.c')
diff --git a/src/expand.c b/src/expand.c
index be50063b6..249255d15 100644
--- a/src/expand.c
+++ b/src/expand.c
@@ -40,6 +40,7 @@
#include