trying 2000 iterations read thread 1087138112 start write thread 1095530816 start write thread 1095530816 stop read thread 1087138112 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.16system 0:15.09elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 72inputs+7008outputs (0major+235minor)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 0:00.81elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 56inputs+56outputs (0major+126minor)pagefaults 0swaps 0.00user 0.11system 0:06.99elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+406minor)pagefaults 0swaps 0.07user 1.21system 0:02.47elapsed 52%CPU (0avgtext+0avgdata 0maxresident)k 2720inputs+207360outputs (1major+26015minor)pagefaults 0swaps 0.08user 1.31system 0:02.17elapsed 64%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.07user 1.16system 0:02.29elapsed 53%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.06user 1.18system 0:02.04elapsed 60%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.00user 0.12system 0:07.07elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+145minor)pagefaults 0swaps 2.82user 2.70system 0:16.00elapsed 34%CPU (0avgtext+0avgdata 0maxresident)k 323760inputs+409600outputs (1major+25798minor)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 1.89system 2:23.57elapsed 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... 1.29user 21.12system 1:16.20elapsed 29%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+5242968outputs (0major+164456minor)pagefaults 0swaps 0.00user 0.78system 0:02.25elapsed 34%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+192000outputs (0major+126minor)pagefaults 0swaps read_checkzero done 1.34user 10.88system 0:12.29elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+8outputs (0major+106minor)pagefaults 0swaps 0.00user 0.00system 0:00.01elapsed 23%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+784outputs (0major+252minor)pagefaults 0swaps 0.00user 0.00system 0:00.18elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+251minor)pagefaults 0swaps 0.00user 0.00system 0:00.21elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+251minor)pagefaults 0swaps