diff mbox series

[02/12] check: really improve test list randomization

Message ID 155304268908.31707.9639554348139720057.stgit@magnolia (mailing list archive)
State Accepted
Headers show
Series fstests: various fixes | expand

Commit Message

Darrick J. Wong March 20, 2019, 12:44 a.m. UTC 
From: Darrick J. Wong <darrick.wong@oracle.com>

coreutils provides the shuf(1) utility that randomizes the order of a
list and seeds its random number generator with /dev/urandom.  It's a
bit speedier than awk, so use it if available.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 check |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/check b/check
index ecd1d39a..a2c5ba21 100755
--- a/check
+++ b/check
@@ -243,7 +243,11 @@  _prepare_test_list()
 
 	# sort the list of tests into numeric order
 	if $randomize; then
-		sorter="awk -v seed=$RANDOM -f randomize.awk"
+		if type shuf >& /dev/null; then
+			sorter="shuf"
+		else
+			sorter="awk -v seed=$RANDOM -f randomize.awk"
+		fi
 	else
 		sorter="cat"
 	fi