trying 2000 iterations read thread 1083443520 start write thread 1091836224 start write thread 1091836224 stop read thread 1083443520 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.01user 0.05system 0:12.23elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 88inputs+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 0:00.07elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 56inputs+56outputs (0major+112minor)pagefaults 0swaps 0.00user 0.04system 0:06.99elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+128000outputs (0major+395minor)pagefaults 0swaps 0.05user 0.43system 0:02.04elapsed 24%CPU (0avgtext+0avgdata 0maxresident)k 2728inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.05user 0.46system 0:01.87elapsed 27%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24403minor)pagefaults 0swaps 0.05user 0.42system 0:02.18elapsed 21%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24403minor)pagefaults 0swaps 0.04user 0.47system 0:01.83elapsed 28%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.00user 0.03system 0:07.08elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+135minor)pagefaults 0swaps 0.85user 1.03system 0:15.60elapsed 12%CPU (0avgtext+0avgdata 0maxresident)k 317184inputs+409600outputs (1599major+24186minor)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 0.78system 2:20.90elapsed 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... 1.09user 10.26system 0:54.49elapsed 20%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+5242968outputs (0major+164414minor)pagefaults 0swaps 0.00user 0.39system 0:01.90elapsed 20%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+192000outputs (0major+115minor)pagefaults 0swaps read_checkzero done 1.35user 9.24system 0:10.64elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+8outputs (0major+97minor)pagefaults 0swaps 0.00user 0.00system 0:00.02elapsed 7%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+784outputs (0major+238minor)pagefaults 0swaps 0.00user 0.00system 0:00.16elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+238minor)pagefaults 0swaps 0.00user 0.00system 0:00.20elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+239minor)pagefaults 0swaps