trying 2000 iterations read thread 1100376384 start write thread 1108769088 start write thread 1108769088 stop read thread 1100376384 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.06system 0:12.18elapsed 0%CPU (0avgtext+0avgdata 2928maxresident)k 80inputs+7008outputs (0major+213minor)pagefaults 0swaps Pass: faulty sync/aio dio writes give EFAULT and don't write garbage Command exited with non-zero status 2 0.00user 0.00system 0:00.08elapsed 0%CPU (0avgtext+0avgdata 1456maxresident)k 56inputs+56outputs (0major+113minor)pagefaults 0swaps 0.00user 0.03system 0:07.66elapsed 0%CPU (0avgtext+0avgdata 5824maxresident)k 32inputs+128000outputs (0major+396minor)pagefaults 0swaps 0.04user 0.46system 0:03.00elapsed 17%CPU (0avgtext+0avgdata 411056maxresident)k 2720inputs+207360outputs (1major+26002minor)pagefaults 0swaps 0.04user 0.45system 0:02.60elapsed 19%CPU (0avgtext+0avgdata 411056maxresident)k 0inputs+207360outputs (1major+26002minor)pagefaults 0swaps 0.04user 0.48system 0:03.08elapsed 17%CPU (0avgtext+0avgdata 411072maxresident)k 2560inputs+207360outputs (1major+26003minor)pagefaults 0swaps 0.03user 0.51system 0:02.69elapsed 20%CPU (0avgtext+0avgdata 411072maxresident)k 0inputs+207360outputs (1major+26003minor)pagefaults 0swaps 0.00user 0.05system 0:07.80elapsed 0%CPU (0avgtext+0avgdata 1680maxresident)k 24inputs+128000outputs (0major+135minor)pagefaults 0swaps 0.24user 0.77system 0:16.31elapsed 6%CPU (0avgtext+0avgdata 411056maxresident)k 128032inputs+409600outputs (1major+25784minor)pagefaults 0swaps dio_truncate: child reading file parent loop # 0 parent loop # 1 parent loop # 2 parent loop # 3 parent loop # 4 parent loop # 5 parent loop # 6 parent loop # 7 parent loop # 8 parent loop # 9 0.00user 0.95system 2:33.66elapsed 0%CPU (0avgtext+0avgdata 7104maxresident)k 24inputs+2560008outputs (0major+475minor)pagefaults 0swaps num_passes set to 10 Pass 1... num_passes set to 10 Pass 1... Pass 2... num_passes set to 10 Pass 1... Pass 2... Pass 3... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... Pass 8... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... Pass 8... Pass 9... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... Pass 8... Pass 9... Pass 10... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... Pass 8... Pass 9... Pass 10... 0.94user 10.95system 1:15.95elapsed 15%CPU (0avgtext+0avgdata 132864maxresident)k 24inputs+5242968outputs (0major+164414minor)pagefaults 0swaps 0.00user 0.45system 0:02.83elapsed 15%CPU (0avgtext+0avgdata 1504maxresident)k 16inputs+192000outputs (0major+114minor)pagefaults 0swaps read_checkzero done 1.24user 8.80system 0:10.10elapsed 99%CPU (0avgtext+0avgdata 1216maxresident)k 16inputs+8outputs (0major+96minor)pagefaults 0swaps 0.00user 0.00system 0:00.03elapsed 10%CPU (0avgtext+0avgdata 3504maxresident)k 32inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.15elapsed 1%CPU (0avgtext+0avgdata 3488maxresident)k 0inputs+784outputs (0major+239minor)pagefaults 0swaps 0.00user 0.00system 0:00.20elapsed 0%CPU (0avgtext+0avgdata 3520maxresident)k 789inputs+792outputs (0major+241minor)pagefaults 0swaps