From: Kris Davis <Kris.Davis@hgst.com>
Date: Wed, 30 Sep 2015 16:00:00 +0000 (+0200)
Subject: Use line buffering on stdout
X-Git-Tag: fio-2.2.11~28
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=18dc4295f53c83af3feba6861b5bdbaf09d720fe

Use line buffering on stdout

Line Buffer stdio to prevent multi-thread output from
mixing within a line

Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/fio.c b/fio.c
index ee6eae24..bafbd48e 100644
--- a/fio.c
+++ b/fio.c
@@ -42,6 +42,12 @@ int main(int argc, char *argv[], char *envp[])
 	if (parse_options(argc, argv))
 		goto done;
 
+	/*
+	 * line buffer stdout to avoid output lines from multiple
+	 * threads getting mixed
+	 */
+	setvbuf(stdout, NULL, _IOLBF, 0);
+
 	fio_time_init();
 
 	if (nr_clients) {