From: Jim Meyering <meyering@redhat.com>
Date: Sat, 4 Dec 2010 10:52:21 +0000 (+0100)
Subject: tests: make it harder to lose a race in spinlock-abuse
X-Git-Tag: v8.8~39
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=231d8719f1b6d8324882cde0eb136c045b7c8338;p=thirdparty%2Fcoreutils.git

tests: make it harder to lose a race in spinlock-abuse

* tests/misc/sort-spinlock-abuse: On a busy system, with only 12
pauses of length 0.1 seconds, the buggy (busy-spinlock blocked)
sort would fail to accumulate 1 second of CPU time, and hence
would mistakenly pass.  Increase from 12 to 50.
---

diff --git a/tests/misc/sort-spinlock-abuse b/tests/misc/sort-spinlock-abuse
index 974e3d5c61..bbf57534bb 100755
--- a/tests/misc/sort-spinlock-abuse
+++ b/tests/misc/sort-spinlock-abuse
@@ -25,9 +25,9 @@ test "$(nproc)" = 1 && skip_ "requires a multi-core system"
 seq 100000 > in || framework_failure_
 mkfifo fifo || framework_failure_
 
-# Arrange for sort to require 1.2+ seconds of wall-clock time,
+# Arrange for sort to require 5.0+ seconds of wall-clock time,
 # while actually using far less than 1 second of CPU time.
-(for i in $(seq 12); do read line; echo $i; sleep .1; done
+(for i in $(seq 50); do read line; echo $i; sleep .1; done
   cat > /dev/null) < fifo &
 
 # Limit CPU time to 1 second