trying 2000 iterations read thread 1112918336 start write thread 1098615104 start write thread 1098615104 stop read thread 1112918336 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.15system 0:12.12elapsed 1%CPU (0avgtext+0avgdata 2976maxresident)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 0:00.09elapsed 1%CPU (0avgtext+0avgdata 1552maxresident)k 56inputs+56outputs (0major+125minor)pagefaults 0swaps 0.00user 0.10system 0:07.22elapsed 1%CPU (0avgtext+0avgdata 5888maxresident)k 40inputs+128000outputs (0major+406minor)pagefaults 0swaps 0.07user 0.95system 0:03.19elapsed 32%CPU (0avgtext+0avgdata 410752maxresident)k 2736inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.07user 0.93system 0:02.70elapsed 37%CPU (0avgtext+0avgdata 410736maxresident)k 0inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.11user 1.09system 0:03.02elapsed 39%CPU (0avgtext+0avgdata 410752maxresident)k 2560inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.07user 0.97system 0:02.97elapsed 35%CPU (0avgtext+0avgdata 410736maxresident)k 0inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.00user 0.08system 0:07.11elapsed 1%CPU (0avgtext+0avgdata 1776maxresident)k 24inputs+128000outputs (0major+145minor)pagefaults 0swaps 3.99user 2.68system 0:18.02elapsed 37%CPU (0avgtext+0avgdata 410704maxresident)k 332816inputs+409600outputs (1major+25798minor)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 1.48system 2:24.73elapsed 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... 1.41user 20.18system 1:22.19elapsed 26%CPU (0avgtext+0avgdata 133008maxresident)k 24inputs+5242968outputs (0major+164457minor)pagefaults 0swaps 0.00user 0.65system 0:02.85elapsed 22%CPU (0avgtext+0avgdata 1632maxresident)k 16inputs+192000outputs (0major+126minor)pagefaults 0swaps read_checkzero done 1.33user 7.80system 0:09.19elapsed 99%CPU (0avgtext+0avgdata 1296maxresident)k 16inputs+8outputs (0major+105minor)pagefaults 0swaps 0.00user 0.00system 0:00.02elapsed 22%CPU (0avgtext+0avgdata 3600maxresident)k 32inputs+784outputs (0major+252minor)pagefaults 0swaps 0.00user 0.00system 0:00.26elapsed 1%CPU (0avgtext+0avgdata 3600maxresident)k 0inputs+784outputs (0major+252minor)pagefaults 0swaps 0.00user 0.00system 0:00.20elapsed 1%CPU (0avgtext+0avgdata 3600maxresident)k 789inputs+792outputs (0major+252minor)pagefaults 0swaps