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 0.13system 0:12.18elapsed 1%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 0:00.08elapsed 5%CPU (0avgtext+0avgdata 0maxresident)k 40inputs+56outputs (0major+113minor)pagefaults 0swaps 0.00user 0.08system 0:07.33elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 8inputs+128000outputs (0major+396minor)pagefaults 0swaps 0.12user 1.08system 0:02.43elapsed 49%CPU (0avgtext+0avgdata 0maxresident)k 2944inputs+207360outputs (49major+25954minor)pagefaults 0swaps 0.09user 1.12system 0:02.44elapsed 49%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (49major+25956minor)pagefaults 0swaps 0.11user 0.98system 0:02.65elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (49major+25955minor)pagefaults 0swaps 0.12user 1.09system 0:02.42elapsed 50%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (49major+25954minor)pagefaults 0swaps 0.00user 0.08system 0:07.20elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+128008outputs (0major+136minor)pagefaults 0swaps 1.16user 1.94system 0:15.92elapsed 19%CPU (0avgtext+0avgdata 0maxresident)k 290496inputs+409600outputs (49major+25734minor)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 1.44system 2:25.57elapsed 0%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... 2.29user 20.80system 1:02.57elapsed 36%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+5242968outputs (0major+164403minor)pagefaults 0swaps 0.00user 0.91system 0:02.68elapsed 34%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+192000outputs (0major+113minor)pagefaults 0swaps read_checkzero done 1.71user 8.19system 0:09.93elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+8outputs (0major+95minor)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 0:00.21elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.09elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+240minor)pagefaults 0swaps