trying 2000 iterations read thread 1086806336 start write thread 1108531520 start write thread 1108531520 stop read thread 1086806336 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.15system 0:12.15elapsed 1%CPU (0avgtext+0avgdata 2960maxresident)k 56inputs+7008outputs (0major+236minor)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 1568maxresident)k 56inputs+56outputs (0major+126minor)pagefaults 0swaps 0.00user 0.10system 0:07.03elapsed 1%CPU (0avgtext+0avgdata 5904maxresident)k 24inputs+128000outputs (0major+406minor)pagefaults 0swaps 0.09user 0.93system 0:02.23elapsed 46%CPU (0avgtext+0avgdata 410736maxresident)k 2720inputs+207360outputs (1major+26015minor)pagefaults 0swaps 0.13user 1.04system 0:02.16elapsed 54%CPU (0avgtext+0avgdata 410736maxresident)k 0inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.06user 0.86system 0:02.19elapsed 42%CPU (0avgtext+0avgdata 410752maxresident)k 2560inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.10user 1.03system 0:02.17elapsed 52%CPU (0avgtext+0avgdata 410736maxresident)k 0inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.00user 0.08system 0:07.18elapsed 1%CPU (0avgtext+0avgdata 1776maxresident)k 24inputs+128000outputs (0major+146minor)pagefaults 0swaps 2.41user 2.38system 0:16.56elapsed 28%CPU (0avgtext+0avgdata 410704maxresident)k 315104inputs+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 1.88system 2:22.39elapsed 1%CPU (0avgtext+0avgdata 7184maxresident)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... 1.65user 18.63system 1:03.73elapsed 31%CPU (0avgtext+0avgdata 132992maxresident)k 24inputs+5242968outputs (0major+164465minor)pagefaults 0swaps 0.00user 0.75system 0:02.25elapsed 33%CPU (0avgtext+0avgdata 1616maxresident)k 16inputs+192000outputs (0major+125minor)pagefaults 0swaps read_checkzero done 1.43user 8.48system 0:10.00elapsed 99%CPU (0avgtext+0avgdata 1312maxresident)k 16inputs+8outputs (0major+106minor)pagefaults 0swaps 0.00user 0.00system 0:00.05elapsed 7%CPU (0avgtext+0avgdata 3600maxresident)k 32inputs+784outputs (0major+252minor)pagefaults 0swaps 0.00user 0.00system 0:00.19elapsed 3%CPU (0avgtext+0avgdata 3616maxresident)k 0inputs+784outputs (0major+253minor)pagefaults 0swaps 0.00user 0.00system 0:00.23elapsed 1%CPU (0avgtext+0avgdata 3616maxresident)k 789inputs+792outputs (0major+253minor)pagefaults 0swaps