trying 2000 iterations read thread 1090124096 start write thread 1109932352 start write thread 1109932352 stop read thread 1090124096 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.13system 0:13.34elapsed 0%CPU (0avgtext+0avgdata 3184maxresident)k 56inputs+7008outputs (0major+237minor)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 0:00.21elapsed 0%CPU (0avgtext+0avgdata 1568maxresident)k 56inputs+56outputs (0major+126minor)pagefaults 0swaps 0.00user 0.09system 0:06.96elapsed 1%CPU (0avgtext+0avgdata 5904maxresident)k 24inputs+128000outputs (0major+406minor)pagefaults 0swaps 0.06user 0.95system 0:02.11elapsed 47%CPU (0avgtext+0avgdata 411232maxresident)k 2720inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.06user 1.00system 0:01.87elapsed 57%CPU (0avgtext+0avgdata 411248maxresident)k 0inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.09user 0.95system 0:02.18elapsed 47%CPU (0avgtext+0avgdata 411248maxresident)k 2560inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.07user 0.98system 0:01.93elapsed 54%CPU (0avgtext+0avgdata 411248maxresident)k 0inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.00user 0.08system 0:07.01elapsed 1%CPU (0avgtext+0avgdata 1760maxresident)k 24inputs+128000outputs (0major+144minor)pagefaults 0swaps 4.40user 3.07system 0:15.86elapsed 47%CPU (0avgtext+0avgdata 411200maxresident)k 315328inputs+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 1.72system 2:20.05elapsed 1%CPU (0avgtext+0avgdata 7200maxresident)k 24inputs+2560008outputs (0major+485minor)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... 1.51user 19.77system 1:03.14elapsed 33%CPU (0avgtext+0avgdata 132992maxresident)k 24inputs+5242968outputs (0major+164465minor)pagefaults 0swaps 0.00user 0.67system 0:01.98elapsed 34%CPU (0avgtext+0avgdata 1616maxresident)k 16inputs+192000outputs (0major+125minor)pagefaults 0swaps read_checkzero done 1.18user 10.35system 0:11.97elapsed 96%CPU (0avgtext+0avgdata 1312maxresident)k 16inputs+8outputs (0major+106minor)pagefaults 0swaps 0.00user 0.00system 0:00.02elapsed 28%CPU (0avgtext+0avgdata 3600maxresident)k 40inputs+784outputs (0major+252minor)pagefaults 0swaps 0.00user 0.00system 0:00.18elapsed 4%CPU (0avgtext+0avgdata 3616maxresident)k 0inputs+784outputs (0major+253minor)pagefaults 0swaps 0.00user 0.00system 0:00.21elapsed 1%CPU (0avgtext+0avgdata 3600maxresident)k 789inputs+792outputs (0major+252minor)pagefaults 0swaps