trying 2000 iterations read thread 1082132800 start write thread 1090525504 start write thread 1090525504 stop read thread 1082132800 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.08system 0:12.19elapsed 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 0.10system 0:07.07elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+128000outputs (0major+395minor)pagefaults 0swaps 0.12user 1.09system 0:02.72elapsed 44%CPU (0avgtext+0avgdata 0maxresident)k 2944inputs+207360outputs (49major+25955minor)pagefaults 0swaps 0.11user 1.07system 0:02.40elapsed 49%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (49major+25955minor)pagefaults 0swaps 0.09user 1.10system 0:02.53elapsed 47%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (49major+25954minor)pagefaults 0swaps 0.11user 1.08system 0:02.44elapsed 48%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (49major+25954minor)pagefaults 0swaps 0.00user 0.09system 0:07.07elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+128000outputs (0major+134minor)pagefaults 0swaps 0.62user 1.75system 0:14.82elapsed 16%CPU (0avgtext+0avgdata 0maxresident)k 127944inputs+409600outputs (49major+25733minor)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 1.25system 2:26.66elapsed 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... 2.24user 20.50system 1:01.73elapsed 36%CPU (0avgtext+0avgdata 0maxresident)k 196608inputs+5242968outputs (0major+164422minor)pagefaults 0swaps 0.00user 0.84system 0:02.32elapsed 36%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+192000outputs (0major+113minor)pagefaults 0swaps read_checkzero done 1.61user 9.54system 0:11.19elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+8outputs (0major+94minor)pagefaults 0swaps 0.00user 0.00system 0:00.00elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.19elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.12elapsed 6%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+239minor)pagefaults 0swaps