trying 2000 iterations read thread 1103419712 start write thread 1111812416 start write thread 1111812416 stop read thread 1103419712 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.11system 0:12.26elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 8inputs+7008outputs (0major+215minor)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 0%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+56outputs (0major+114minor)pagefaults 0swaps 0.00user 0.12system 0:07.75elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+128000outputs (0major+396minor)pagefaults 0swaps 0.12user 1.06system 0:02.88elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k 2688inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.12user 1.04system 0:02.95elapsed 39%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.16user 1.00system 0:03.87elapsed 30%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.11user 1.14system 0:02.88elapsed 43%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.00user 0.11system 0:08.12elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+128000outputs (0major+135minor)pagefaults 0swaps 1.64user 2.20system 0:18.14elapsed 21%CPU (0avgtext+0avgdata 0maxresident)k 313568inputs+409600outputs (1599major+24185minor)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 1.66system 2:35.33elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+2560008outputs (0major+474minor)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... 2.32user 20.80system 1:25.66elapsed 26%CPU (0avgtext+0avgdata 0maxresident)k 1245184inputs+5242968outputs (0major+164403minor)pagefaults 0swaps 0.00user 0.83system 0:03.87elapsed 21%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+192000outputs (0major+113minor)pagefaults 0swaps read_checkzero done 1.44user 10.46system 0:11.93elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+8outputs (0major+96minor)pagefaults 0swaps 0.00user 0.00system 0:00.00elapsed 133%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.24elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.13elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+240minor)pagefaults 0swaps