trying 2000 iterations read thread 1114257728 start write thread 1101773120 start write thread 1101773120 stop read thread 1114257728 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.06system 0:12.13elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 88inputs+7008outputs (0major+213minor)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 0:00.07elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 56inputs+56outputs (0major+113minor)pagefaults 0swaps 0.00user 0.05system 0:07.34elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+128000outputs (0major+394minor)pagefaults 0swaps 0.04user 0.46system 0:03.40elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k 2776inputs+207360outputs (1major+26002minor)pagefaults 0swaps 0.04user 0.45system 0:02.66elapsed 18%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1major+26001minor)pagefaults 0swaps 0.04user 0.48system 0:03.06elapsed 17%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1major+26001minor)pagefaults 0swaps 0.04user 0.47system 0:02.51elapsed 20%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1major+26001minor)pagefaults 0swaps 0.00user 0.04system 0:07.39elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+137minor)pagefaults 0swaps 0.89user 1.04system 0:18.61elapsed 10%CPU (0avgtext+0avgdata 0maxresident)k 330752inputs+409600outputs (1major+25783minor)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 0.97system 2:31.97elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+2560008outputs (0major+475minor)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... 0.92user 10.87system 1:15.99elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+5242968outputs (0major+164415minor)pagefaults 0swaps 0.00user 0.47system 0:02.74elapsed 17%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+192000outputs (0major+114minor)pagefaults 0swaps read_checkzero done 1.43user 10.52system 0:11.99elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+8outputs (0major+97minor)pagefaults 0swaps 0.00user 0.00system 0:00.02elapsed 6%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.17elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+239minor)pagefaults 0swaps 0.00user 0.00system 0:00.20elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+238minor)pagefaults 0swaps