trying 2000 iterations read thread 1091000640 start write thread 1109592384 start write thread 1109592384 stop read thread 1091000640 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.12system 0:12.14elapsed 1%CPU (0avgtext+0avgdata 3184maxresident)k 64inputs+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 0%CPU (0avgtext+0avgdata 1568maxresident)k 56inputs+56outputs (0major+126minor)pagefaults 0swaps 0.00user 0.10system 0:07.20elapsed 1%CPU (0avgtext+0avgdata 5904maxresident)k 24inputs+128000outputs (0major+406minor)pagefaults 0swaps 0.06user 0.53system 0:01.92elapsed 31%CPU (0avgtext+0avgdata 411232maxresident)k 2720inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.07user 0.88system 0:01.78elapsed 53%CPU (0avgtext+0avgdata 411248maxresident)k 0inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.05user 0.58system 0:02.05elapsed 31%CPU (0avgtext+0avgdata 411248maxresident)k 2560inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.06user 0.77system 0:01.93elapsed 43%CPU (0avgtext+0avgdata 411232maxresident)k 0inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.00user 0.08system 0:06.94elapsed 1%CPU (0avgtext+0avgdata 1760maxresident)k 24inputs+128000outputs (0major+145minor)pagefaults 0swaps 4.33user 2.85system 0:15.35elapsed 46%CPU (0avgtext+0avgdata 411200maxresident)k 298328inputs+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 0.01user 2.06system 2:19.15elapsed 1%CPU (0avgtext+0avgdata 7184maxresident)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... 1.43user 19.93system 0:58.64elapsed 36%CPU (0avgtext+0avgdata 132976maxresident)k 24inputs+5242968outputs (0major+164465minor)pagefaults 0swaps 0.00user 0.59system 0:01.99elapsed 29%CPU (0avgtext+0avgdata 1632maxresident)k 16inputs+192000outputs (0major+126minor)pagefaults 0swaps read_checkzero done 1.19user 9.31system 0:10.55elapsed 99%CPU (0avgtext+0avgdata 1312maxresident)k 16inputs+8outputs (0major+106minor)pagefaults 0swaps 0.00user 0.00system 0:00.02elapsed 11%CPU (0avgtext+0avgdata 3616maxresident)k 32inputs+784outputs (0major+253minor)pagefaults 0swaps 0.00user 0.00system 0:00.19elapsed 3%CPU (0avgtext+0avgdata 3600maxresident)k 0inputs+784outputs (0major+252minor)pagefaults 0swaps 0.00user 0.00system 0:00.21elapsed 1%CPU (0avgtext+0avgdata 3600maxresident)k 789inputs+792outputs (0major+252minor)pagefaults 0swaps