trying 2000 iterations read thread 1086748992 start write thread 1114806592 start write thread 1114806592 stop read thread 1086748992 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.14system 0:12.66elapsed 1%CPU (0avgtext+0avgdata 3184maxresident)k 88inputs+7008outputs (0major+235minor)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 0:00.26elapsed 0%CPU (0avgtext+0avgdata 1568maxresident)k 56inputs+56outputs (0major+126minor)pagefaults 0swaps 0.00user 0.10system 0:07.05elapsed 1%CPU (0avgtext+0avgdata 5904maxresident)k 40inputs+128000outputs (0major+406minor)pagefaults 0swaps 0.08user 0.96system 0:02.66elapsed 39%CPU (0avgtext+0avgdata 411216maxresident)k 2728inputs+207360outputs (1major+26015minor)pagefaults 0swaps 0.09user 0.95system 0:02.41elapsed 43%CPU (0avgtext+0avgdata 411248maxresident)k 0inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.08user 0.88system 0:02.93elapsed 32%CPU (0avgtext+0avgdata 411232maxresident)k 2560inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.05user 0.95system 0:02.66elapsed 37%CPU (0avgtext+0avgdata 411232maxresident)k 0inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.00user 0.08system 0:07.00elapsed 1%CPU (0avgtext+0avgdata 1776maxresident)k 24inputs+128000outputs (0major+145minor)pagefaults 0swaps 2.33user 2.34system 0:21.40elapsed 21%CPU (0avgtext+0avgdata 411216maxresident)k 359288inputs+409600outputs (1major+25797minor)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 0.01user 1.92system 2:21.99elapsed 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... 1.55user 20.11system 1:15.07elapsed 28%CPU (0avgtext+0avgdata 132992maxresident)k 24inputs+5242968outputs (0major+164456minor)pagefaults 0swaps 0.00user 0.77system 0:02.76elapsed 28%CPU (0avgtext+0avgdata 1632maxresident)k 24inputs+192000outputs (0major+126minor)pagefaults 0swaps read_checkzero done 1.22user 8.35system 0:09.60elapsed 99%CPU (0avgtext+0avgdata 1296maxresident)k 16inputs+8outputs (0major+105minor)pagefaults 0swaps 0.00user 0.00system 0:00.02elapsed 4%CPU (0avgtext+0avgdata 3600maxresident)k 32inputs+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 0:00.21elapsed 1%CPU (0avgtext+0avgdata 3600maxresident)k 789inputs+792outputs (0major+252minor)pagefaults 0swaps