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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/113005] 'libgomp.fortran/rwlock_1.f90',
 'libgomp.fortran/rwlock_3.f90' execution test timeouts
Date: Fri, 22 Dec 2023 08:48:46 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113005

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I can confirm that on x86_64-linux with 16 cores/32 threads even the -O0
rwlock_1 and rwlock_3 tests aren't that slow, byt with OMP_NUM_THREADS=3D10=
24
and higher rwlock_1 STOPs:
$ OMP_NUM_THREADS=3D256 LD_LIBRARY_PATH=3D../.libs/ time ./rwlock_1.exe
2.21user 8.88system 0:00.88elapsed 1260%CPU (0avgtext+0avgdata
47324maxresident)k
0inputs+206848outputs (0major+29321minor)pagefaults 0swaps
$ OMP_NUM_THREADS=3D512 LD_LIBRARY_PATH=3D../.libs/ time ./rwlock_1.exe
4.59user 14.41system 0:02.29elapsed 829%CPU (0avgtext+0avgdata
89464maxresident)k
0inputs+413696outputs (0major+55232minor)pagefaults 0swaps
$ OMP_NUM_THREADS=3D1024 LD_LIBRARY_PATH=3D../.libs/ time ./rwlock_1.exe
STOP 2
STOP 2
Command exited with non-zero status 2
0.04user 0.78system 0:00.14elapsed 586%CPU (0avgtext+0avgdata
18976maxresident)k
0inputs+1672outputs (2major+4138minor)pagefaults 0swaps
$ OMP_NUM_THREADS=3D1024 LD_LIBRARY_PATH=3D../.libs/ time ./rwlock_3.exe
13.57user 49.00system 0:17.66elapsed 354%CPU (0avgtext+0avgdata
26588maxresident)k
0inputs+0outputs (1major+5987minor)pagefaults 0swaps
$ OMP_NUM_THREADS=3D2048 LD_LIBRARY_PATH=3D../.libs/ time ./rwlock_3.exe
38.15user 134.83system 0:51.26elapsed 337%CPU (0avgtext+0avgdata
45860maxresident)k
0inputs+0outputs (0major+10844minor)pagefaults 0swaps=