trying 2000 iterations read thread 1084184896 start write thread 1092577600 start write thread 1092577600 stop read thread 1084184896 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.05system 0:12.14elapsed 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 0%CPU (0avgtext+0avgdata 0maxresident)k 56inputs+56outputs (0major+113minor)pagefaults 0swaps 0.00user 0.03system 0:06.91elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+396minor)pagefaults 0swaps 0.04user 0.45system 0:01.91elapsed 26%CPU (0avgtext+0avgdata 0maxresident)k 2720inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.04user 0.47system 0:01.71elapsed 29%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.03user 0.47system 0:02.04elapsed 24%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.05user 0.48system 0:01.87elapsed 28%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24403minor)pagefaults 0swaps 0.00user 0.04system 0:06.89elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+135minor)pagefaults 0swaps 1.23user 1.22system 0:15.44elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k 332672inputs+409600outputs (1599major+24184minor)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 0.89system 2:19.52elapsed 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... 0.91user 10.60system 0:52.72elapsed 21%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+5242968outputs (0major+164424minor)pagefaults 0swaps 0.00user 0.43system 0:01.86elapsed 23%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+192000outputs (0major+114minor)pagefaults 0swaps read_checkzero done 1.26user 9.01system 0:10.32elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+8outputs (0major+96minor)pagefaults 0swaps 0.00user 0.00system 0:00.02elapsed 10%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+784outputs (0major+238minor)pagefaults 0swaps 0.00user 0.00system 0:00.15elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+239minor)pagefaults 0swaps 0.00user 0.00system 0:00.19elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+239minor)pagefaults 0swaps