From 87acde8879f8edbaf95aa1a91147dc1cebffd4a5 Mon Sep 17 00:00:00 2001 From: Jim Meyering Date: Sun, 16 Mar 2014 13:45:57 -0700 Subject: [PATCH] tests: avoid false-positive failure on some AMD CPUs * tests/mb-non-UTF8-performance: Avoid false-positive failure when run on certain AMD processors. --- tests/mb-non-UTF8-performance | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tests/mb-non-UTF8-performance b/tests/mb-non-UTF8-performance index 640d5db..4ce3271 100755 --- a/tests/mb-non-UTF8-performance +++ b/tests/mb-non-UTF8-performance @@ -1,5 +1,7 @@ #!/bin/sh # grep-2.17 would take nearly 200x longer to run the command below. +# The 200x is on an Intel i7-based system. +# On an AMD FX-4100, it would take up to 2500x longer. # Copyright 2014 Free Software Foundation, Inc. @@ -29,8 +31,8 @@ LC_ALL=C grep -i foobar in; st=$? stop=$(hi_res_time_) # Use a multiple of the LC_ALL=C duration as the timeout for the JP/EUC test. -# Typically, a multiple of 3 seems to be enough. -timeout=$($AWK 'BEGIN { print 8 * ('$stop' - '$start')}' < /dev/null) +# A multiple of 3 seems to be enough for i5,i7, but AMD needs >25. +timeout=$($AWK 'BEGIN { print 30 * ('$stop' - '$start')}' < /dev/null) test $st = 1 || fail=1 -- 1.9.0.167.g384364b