trying 2000 iterations read thread 1096268096 start write thread 1104660800 start write thread 1104660800 stop read thread 1096268096 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.14system 0:12.19elapsed 1%CPU (0avgtext+0avgdata 2976maxresident)k 64inputs+7008outputs (0major+238minor)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 1%CPU (0avgtext+0avgdata 1552maxresident)k 56inputs+56outputs (0major+125minor)pagefaults 0swaps 0.00user 0.08system 0:07.29elapsed 1%CPU (0avgtext+0avgdata 5904maxresident)k 40inputs+128000outputs (0major+406minor)pagefaults 0swaps 0.09user 0.89system 0:02.76elapsed 35%CPU (0avgtext+0avgdata 410752maxresident)k 2752inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.06user 0.78system 0:02.48elapsed 34%CPU (0avgtext+0avgdata 410752maxresident)k 0inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.06user 0.82system 0:03.22elapsed 27%CPU (0avgtext+0avgdata 410736maxresident)k 2560inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.11user 0.91system 0:02.83elapsed 36%CPU (0avgtext+0avgdata 410736maxresident)k 0inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.00user 0.08system 0:07.35elapsed 1%CPU (0avgtext+0avgdata 1776maxresident)k 24inputs+128000outputs (0major+145minor)pagefaults 0swaps 3.04user 2.39system 0:17.81elapsed 30%CPU (0avgtext+0avgdata 410704maxresident)k 320016inputs+409600outputs (1major+25796minor)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 1.54system 2:26.65elapsed 1%CPU (0avgtext+0avgdata 7184maxresident)k 24inputs+2560008outputs (0major+483minor)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... 1.70user 16.93system 1:09.06elapsed 26%CPU (0avgtext+0avgdata 132976maxresident)k 24inputs+5242968outputs (0major+164455minor)pagefaults 0swaps 0.00user 0.61system 0:02.69elapsed 22%CPU (0avgtext+0avgdata 1632maxresident)k 16inputs+192000outputs (0major+126minor)pagefaults 0swaps read_checkzero done 1.15user 8.84system 0:10.08elapsed 99%CPU (0avgtext+0avgdata 1312maxresident)k 16inputs+8outputs (0major+106minor)pagefaults 0swaps 0.00user 0.00system 0:00.05elapsed 9%CPU (0avgtext+0avgdata 3616maxresident)k 32inputs+784outputs (0major+253minor)pagefaults 0swaps 0.00user 0.00system 0:00.18elapsed 2%CPU (0avgtext+0avgdata 3616maxresident)k 0inputs+784outputs (0major+253minor)pagefaults 0swaps 0.00user 0.00system 0:00.21elapsed 0%CPU (0avgtext+0avgdata 3616maxresident)k 789inputs+792outputs (0major+253minor)pagefaults 0swaps