trying 2000 iterations read thread 1107294528 start write thread 1115687232 start write thread 1115687232 stop read thread 1107294528 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.16system 0:12.80elapsed 1%CPU (0avgtext+0avgdata 2976maxresident)k 96inputs+7008outputs (0major+238minor)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 0:00.14elapsed 0%CPU (0avgtext+0avgdata 1568maxresident)k 56inputs+56outputs (0major+126minor)pagefaults 0swaps 0.00user 0.10system 0:07.08elapsed 1%CPU (0avgtext+0avgdata 5888maxresident)k 24inputs+128000outputs (0major+406minor)pagefaults 0swaps 0.09user 0.96system 0:02.70elapsed 39%CPU (0avgtext+0avgdata 410752maxresident)k 2720inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.09user 1.00system 0:02.26elapsed 48%CPU (0avgtext+0avgdata 410752maxresident)k 0inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.07user 0.92system 0:02.38elapsed 42%CPU (0avgtext+0avgdata 410736maxresident)k 2560inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.07user 0.94system 0:02.17elapsed 46%CPU (0avgtext+0avgdata 410752maxresident)k 0inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.00user 0.09system 0:07.06elapsed 1%CPU (0avgtext+0avgdata 1760maxresident)k 24inputs+128000outputs (0major+144minor)pagefaults 0swaps 3.25user 2.51system 0:16.85elapsed 34%CPU (0avgtext+0avgdata 410720maxresident)k 319528inputs+409600outputs (1major+25797minor)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 1.86system 2:26.67elapsed 1%CPU (0avgtext+0avgdata 7200maxresident)k 24inputs+2560008outputs (0major+485minor)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... 1.70user 19.20system 1:10.20elapsed 29%CPU (0avgtext+0avgdata 132976maxresident)k 24inputs+5242968outputs (0major+164464minor)pagefaults 0swaps 0.00user 0.61system 0:02.10elapsed 29%CPU (0avgtext+0avgdata 1616maxresident)k 16inputs+192000outputs (0major+125minor)pagefaults 0swaps read_checkzero done 1.15user 10.92system 0:12.52elapsed 96%CPU (0avgtext+0avgdata 1312maxresident)k 16inputs+8outputs (0major+106minor)pagefaults 0swaps 0.00user 0.00system 0:00.04elapsed 14%CPU (0avgtext+0avgdata 3616maxresident)k 40inputs+784outputs (0major+253minor)pagefaults 0swaps 0.00user 0.00system 0:00.21elapsed 3%CPU (0avgtext+0avgdata 3616maxresident)k 0inputs+784outputs (0major+253minor)pagefaults 0swaps 0.00user 0.00system 0:00.24elapsed 1%CPU (0avgtext+0avgdata 3616maxresident)k 789inputs+792outputs (0major+253minor)pagefaults 0swaps