trying 2000 iterations read thread 1084438848 start write thread 1101379904 start write thread 1101379904 stop read thread 1084438848 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.14system 0:12.33elapsed 1%CPU (0avgtext+0avgdata 2960maxresident)k 104inputs+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 0:00.16elapsed 0%CPU (0avgtext+0avgdata 1568maxresident)k 56inputs+56outputs (0major+126minor)pagefaults 0swaps 0.00user 0.09system 0:07.18elapsed 1%CPU (0avgtext+0avgdata 5888maxresident)k 56inputs+128000outputs (0major+405minor)pagefaults 0swaps 0.07user 0.78system 0:02.80elapsed 30%CPU (0avgtext+0avgdata 410752maxresident)k 2752inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.10user 1.05system 0:02.45elapsed 47%CPU (0avgtext+0avgdata 410752maxresident)k 0inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.11user 1.01system 0:02.78elapsed 40%CPU (0avgtext+0avgdata 410736maxresident)k 2560inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.11user 1.05system 0:02.47elapsed 47%CPU (0avgtext+0avgdata 410752maxresident)k 0inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.00user 0.08system 0:07.14elapsed 1%CPU (0avgtext+0avgdata 1776maxresident)k 24inputs+128000outputs (0major+146minor)pagefaults 0swaps 3.08user 2.18system 0:17.12elapsed 30%CPU (0avgtext+0avgdata 410704maxresident)k 306800inputs+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 1.59system 2:25.70elapsed 1%CPU (0avgtext+0avgdata 7200maxresident)k 24inputs+2560008outputs (0major+484minor)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... 1.94user 20.37system 1:18.71elapsed 28%CPU (0avgtext+0avgdata 132992maxresident)k 24inputs+5242976outputs (0major+164456minor)pagefaults 0swaps 0.00user 0.52system 0:02.22elapsed 23%CPU (0avgtext+0avgdata 1632maxresident)k 16inputs+192000outputs (0major+126minor)pagefaults 0swaps read_checkzero done 1.21user 9.51system 0:11.23elapsed 95%CPU (0avgtext+0avgdata 1312maxresident)k 16inputs+8outputs (0major+106minor)pagefaults 0swaps 0.00user 0.00system 0:00.03elapsed 13%CPU (0avgtext+0avgdata 3600maxresident)k 40inputs+784outputs (0major+252minor)pagefaults 0swaps 0.00user 0.00system 0:00.26elapsed 2%CPU (0avgtext+0avgdata 3616maxresident)k 0inputs+784outputs (0major+253minor)pagefaults 0swaps 0.00user 0.00system 0:00.25elapsed 1%CPU (0avgtext+0avgdata 3616maxresident)k 789inputs+792outputs (0major+253minor)pagefaults 0swaps