trying 2000 iterations read thread 1108756800 start write thread 1117149504 start write thread 1117149504 stop read thread 1108756800 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.14system 0:12.13elapsed 1%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 0:00.07elapsed 0%CPU (0avgtext+0avgdata 1568maxresident)k 56inputs+56outputs (0major+126minor)pagefaults 0swaps 0.00user 0.10system 0:07.00elapsed 1%CPU (0avgtext+0avgdata 5904maxresident)k 24inputs+128000outputs (0major+407minor)pagefaults 0swaps 0.10user 0.91system 0:02.26elapsed 45%CPU (0avgtext+0avgdata 411216maxresident)k 2728inputs+207360outputs (1major+26015minor)pagefaults 0swaps 0.08user 0.98system 0:02.03elapsed 52%CPU (0avgtext+0avgdata 411248maxresident)k 0inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.07user 0.97system 0:02.24elapsed 47%CPU (0avgtext+0avgdata 411248maxresident)k 2560inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.05user 0.96system 0:01.94elapsed 52%CPU (0avgtext+0avgdata 411248maxresident)k 0inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.00user 0.08system 0:07.18elapsed 1%CPU (0avgtext+0avgdata 1776maxresident)k 32inputs+128000outputs (0major+145minor)pagefaults 0swaps 2.36user 2.52system 0:15.83elapsed 30%CPU (0avgtext+0avgdata 411200maxresident)k 296144inputs+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 1.86system 2:19.94elapsed 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... 1.74user 20.74system 0:59.73elapsed 37%CPU (0avgtext+0avgdata 132992maxresident)k 24inputs+5242968outputs (0major+164476minor)pagefaults 0swaps 0.00user 0.70system 0:02.08elapsed 33%CPU (0avgtext+0avgdata 1616maxresident)k 16inputs+192000outputs (0major+125minor)pagefaults 0swaps read_checkzero done 1.30user 8.33system 0:09.67elapsed 99%CPU (0avgtext+0avgdata 1296maxresident)k 16inputs+8outputs (0major+105minor)pagefaults 0swaps 0.00user 0.00system 0:00.03elapsed 18%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 0:00.19elapsed 3%CPU (0avgtext+0avgdata 3616maxresident)k 789inputs+792outputs (0major+253minor)pagefaults 0swaps