trying 2000 iterations read thread 1099659584 start write thread 1108052288 start write thread 1108052288 stop read thread 1099659584 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.16system 0:12.15elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 72inputs+7008outputs (0major+236minor)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 3%CPU (0avgtext+0avgdata 0maxresident)k 56inputs+56outputs (0major+126minor)pagefaults 0swaps 0.00user 0.11system 0:07.02elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+407minor)pagefaults 0swaps 0.10user 1.18system 0:02.65elapsed 48%CPU (0avgtext+0avgdata 0maxresident)k 2720inputs+207360outputs (1599major+24417minor)pagefaults 0swaps 0.12user 1.41system 0:02.21elapsed 69%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24418minor)pagefaults 0swaps 0.11user 1.41system 0:02.55elapsed 60%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24418minor)pagefaults 0swaps 0.12user 1.39system 0:02.17elapsed 69%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24418minor)pagefaults 0swaps 0.00user 0.10system 0:07.15elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+145minor)pagefaults 0swaps 3.82user 3.50system 0:16.22elapsed 45%CPU (0avgtext+0avgdata 0maxresident)k 328960inputs+409600outputs (1599major+24200minor)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 1.76system 2:24.10elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+2560008outputs (0major+484minor)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... 2.32user 30.02system 1:05.76elapsed 49%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+5242968outputs (0major+164476minor)pagefaults 0swaps 0.00user 1.26system 0:02.61elapsed 48%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+192000outputs (0major+125minor)pagefaults 0swaps read_checkzero done 1.40user 13.21system 0:14.66elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+8outputs (0major+105minor)pagefaults 0swaps 0.00user 0.00system 0:00.02elapsed 8%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+784outputs (0major+252minor)pagefaults 0swaps 0.00user 0.00system 0:00.22elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+252minor)pagefaults 0swaps 0.00user 0.00system 0:00.14elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+252minor)pagefaults 0swaps