trying 2000 iterations read thread 1108400448 start write thread 1116793152 start write thread 1116793152 stop read thread 1108400448 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.11system 0:12.09elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 8inputs+7008outputs (0major+214minor)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 0:00.06elapsed 6%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+56outputs (0major+112minor)pagefaults 0swaps 0.00user 0.08system 0:06.95elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+128000outputs (0major+396minor)pagefaults 0swaps 0.10user 1.03system 0:02.26elapsed 50%CPU (0avgtext+0avgdata 0maxresident)k 2696inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.12user 1.00system 0:01.95elapsed 57%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24403minor)pagefaults 0swaps 0.10user 1.06system 0:02.35elapsed 49%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.11user 1.00system 0:01.94elapsed 57%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24403minor)pagefaults 0swaps 0.00user 0.08system 0:07.00elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+128000outputs (0major+136minor)pagefaults 0swaps 2.24user 2.20system 0:15.28elapsed 29%CPU (0avgtext+0avgdata 0maxresident)k 324224inputs+409600outputs (1599major+24184minor)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 1.15system 2:23.94elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+2560008outputs (0major+473minor)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... 2.34user 20.25system 0:53.72elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+5242968outputs (0major+164414minor)pagefaults 0swaps 0.00user 0.89system 0:02.15elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+192000outputs (0major+113minor)pagefaults 0swaps read_checkzero done 0.82user 8.57system 0:09.41elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+8outputs (0major+97minor)pagefaults 0swaps 0.00user 0.00system 0:00.00elapsed 160%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+238minor)pagefaults 0swaps 0.00user 0.00system 0:00.21elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+239minor)pagefaults 0swaps 0.00user 0.00system 0:00.10elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+238minor)pagefaults 0swaps