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#!/bin/sh
# Test for a performance regression with -Fw and a non-UTF8 multibyte locale.
# Copyright 2019-2020 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
. "${srcdir=.}/init.sh"; path_prepend_ ../src
fail=0
require_timeout_
require_JP_EUC_locale_
yes 00 | head -10000000 > in || framework_failure_
# Since we're using an absolute timeout below and want to avoid any initial
# disk read performance penalty, run first with a large timeout and no error
# test to prime any cache. Prompted by a report of test failure on a netbsd8.1
# VM whereby the first run would take 2.5 MINUTES, yet the second would complete
# in just half a second.
timeout 500 grep -Fw 0 in
# Before fixing the regression, this would have taken minutes.
# With the fix, it typically completes in well under one second.
returns_ 1 timeout 30 grep -Fw 0 in || fail=1
Exit $fail
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