diff options
| -rw-r--r-- | tests/Makefile.am | 4 | ||||
| -rwxr-xr-x | tests/misc/sort-spinlock-abuse | 37 |
2 files changed, 41 insertions, 0 deletions
diff --git a/tests/Makefile.am b/tests/Makefile.am index 2e33063bd..b3be4dfe5 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -237,6 +237,7 @@ TESTS = \ misc/sort-merge-fdlimit \ misc/sort-month \ misc/sort-rand \ + misc/sort-spinlock-abuse \ misc/sort-unique \ misc/sort-version \ misc/split-a \ @@ -654,4 +655,7 @@ pr_data = \ pr/ttb3-FF \ pr/w72l24f-ll +XFAIL_TESTS = \ + misc/sort-spinlock-abuse + include $(srcdir)/check.mk diff --git a/tests/misc/sort-spinlock-abuse b/tests/misc/sort-spinlock-abuse new file mode 100755 index 000000000..974e3d5c6 --- /dev/null +++ b/tests/misc/sort-spinlock-abuse @@ -0,0 +1,37 @@ +#!/bin/sh +# trigger a bug that would make parallel sort use 100% of one or more +# CPU while blocked on output. + +# Copyright (C) 2010 Free Software Foundation, Inc. + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +. "${srcdir=.}/init.sh"; path_prepend_ ../src +print_ver_ sort + +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, +# while actually using far less than 1 second of CPU time. +(for i in $(seq 12); do read line; echo $i; sleep .1; done + cat > /dev/null) < fifo & + +# Limit CPU time to 1 second +ulimit -t 1 +sort --parallel=2 in > fifo || fail=1 + +Exit $fail |