trying 2000 iterations read thread 1102371136 start write thread 1110763840 start write thread 1110763840 stop read thread 1102371136 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.10system 0:12.44elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 64inputs+7008outputs (0major+215minor)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 0:00.07elapsed 5%CPU (0avgtext+0avgdata 0maxresident)k 56inputs+56outputs (0major+114minor)pagefaults 0swaps 0.00user 0.09system 0:07.03elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 8inputs+128000outputs (0major+396minor)pagefaults 0swaps 0.11user 1.05system 0:02.70elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k 2736inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.11user 1.05system 0:02.37elapsed 49%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.10user 1.08system 0:02.85elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.09user 1.09system 0:02.32elapsed 51%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.00user 0.07system 0:07.21elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+128000outputs (0major+137minor)pagefaults 0swaps 2.23user 2.20system 0:16.78elapsed 26%CPU (0avgtext+0avgdata 0maxresident)k 327296inputs+409600outputs (1599major+24185minor)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 0.01user 1.32system 2:25.22elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+2560008outputs (0major+473minor)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... 2.24user 21.00system 1:29.20elapsed 26%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+5242968outputs (0major+164412minor)pagefaults 0swaps 0.00user 0.94system 0:02.58elapsed 36%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+192000outputs (0major+113minor)pagefaults 0swaps read_checkzero done 1.77user 7.96system 0:09.82elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+8outputs (0major+96minor)pagefaults 0swaps 0.00user 0.00system 0:00.04elapsed 9%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+784outputs (0major+239minor)pagefaults 0swaps 0.00user 0.00system 0:00.26elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.14elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+240minor)pagefaults 0swaps