trying 2000 iterations read thread 1091496256 start write thread 1099888960 start write thread 1099888960 stop read thread 1091496256 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.12system 0:12.57elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+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 0:00.10elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 56inputs+40outputs (0major+112minor)pagefaults 0swaps 0.00user 0.10system 0:07.06elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+128000outputs (0major+396minor)pagefaults 0swaps 0.11user 0.92system 0:04.36elapsed 23%CPU (0avgtext+0avgdata 0maxresident)k 2760inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.08user 1.01system 0:04.06elapsed 27%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.14user 0.92system 0:02.43elapsed 43%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.12user 0.95system 0:02.20elapsed 48%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.00user 0.06system 0:09.35elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+135minor)pagefaults 0swaps 1.61user 1.98system 0:21.64elapsed 16%CPU (0avgtext+0avgdata 0maxresident)k 263824inputs+409600outputs (1599major+24185minor)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 1.20system 2:49.67elapsed 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... 2.58user 20.43system 1:19.06elapsed 29%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+5242968outputs (0major+164413minor)pagefaults 0swaps 0.00user 0.84system 0:02.25elapsed 37%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+192000outputs (0major+113minor)pagefaults 0swaps read_checkzero done 0.87user 8.87system 0:10.11elapsed 96%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+8outputs (0major+97minor)pagefaults 0swaps 0.00user 0.00system 0:00.02elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.19elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.11elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+240minor)pagefaults 0swaps