trying 2000 iterations read thread 1098164544 start write thread 1106557248 start write thread 1106557248 stop read thread 1098164544 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.08system 0:12.33elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 112inputs+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 5%CPU (0avgtext+0avgdata 0maxresident)k 56inputs+56outputs (0major+113minor)pagefaults 0swaps 0.00user 0.07system 0:06.96elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 40inputs+128000outputs (0major+396minor)pagefaults 0swaps 0.09user 1.05system 0:02.48elapsed 46%CPU (0avgtext+0avgdata 0maxresident)k 2736inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.10user 1.03system 0:02.23elapsed 51%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.07user 1.05system 0:02.48elapsed 45%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.10user 1.03system 0:01.99elapsed 57%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.00user 0.09system 0:07.03elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+128000outputs (0major+135minor)pagefaults 0swaps 2.94user 2.16system 0:16.48elapsed 31%CPU (0avgtext+0avgdata 0maxresident)k 318344inputs+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 0.01user 1.24system 2:27.97elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+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... 2.52user 20.21system 0:56.97elapsed 39%CPU (0avgtext+0avgdata 0maxresident)k 65560inputs+5242976outputs (0major+164423minor)pagefaults 0swaps 0.00user 0.88system 0:02.41elapsed 36%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+192000outputs (0major+114minor)pagefaults 0swaps read_checkzero done 0.48user 10.35system 0:10.93elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+8outputs (0major+96minor)pagefaults 0swaps 0.00user 0.00system 0:00.02elapsed 20%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.19elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+242minor)pagefaults 0swaps 0.00user 0.00system 0:00.12elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+239minor)pagefaults 0swaps