trying 2000 iterations read thread 1101498688 start write thread 1109891392 start write thread 1109891392 stop read thread 1101498688 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.15system 0:12.15elapsed 1%CPU (0avgtext+0avgdata 3168maxresident)k 88inputs+7008outputs (0major+234minor)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 1%CPU (0avgtext+0avgdata 1552maxresident)k 56inputs+56outputs (0major+125minor)pagefaults 0swaps 0.00user 0.10system 0:06.97elapsed 1%CPU (0avgtext+0avgdata 5904maxresident)k 24inputs+128000outputs (0major+407minor)pagefaults 0swaps 0.07user 0.98system 0:02.57elapsed 41%CPU (0avgtext+0avgdata 411232maxresident)k 2728inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.07user 1.03system 0:02.10elapsed 52%CPU (0avgtext+0avgdata 411248maxresident)k 0inputs+207360outputs (1major+26017minor)pagefaults 0swaps 0.05user 0.96system 0:02.41elapsed 42%CPU (0avgtext+0avgdata 411232maxresident)k 2560inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.07user 1.00system 0:02.07elapsed 51%CPU (0avgtext+0avgdata 411232maxresident)k 0inputs+207360outputs (1major+26016minor)pagefaults 0swaps 0.00user 0.10system 0:07.06elapsed 1%CPU (0avgtext+0avgdata 1776maxresident)k 32inputs+128000outputs (0major+145minor)pagefaults 0swaps 3.04user 2.54system 0:17.00elapsed 32%CPU (0avgtext+0avgdata 411216maxresident)k 319568inputs+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 1.89system 2:20.72elapsed 1%CPU (0avgtext+0avgdata 7200maxresident)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... 1.51user 19.21system 1:11.57elapsed 28%CPU (0avgtext+0avgdata 132992maxresident)k 24inputs+5242976outputs (0major+164466minor)pagefaults 0swaps 0.00user 0.65system 0:02.77elapsed 23%CPU (0avgtext+0avgdata 1616maxresident)k 16inputs+192000outputs (0major+125minor)pagefaults 0swaps read_checkzero done 1.22user 11.78system 0:13.05elapsed 99%CPU (0avgtext+0avgdata 1312maxresident)k 16inputs+8outputs (0major+106minor)pagefaults 0swaps 0.00user 0.00system 0:00.03elapsed 13%CPU (0avgtext+0avgdata 3600maxresident)k 32inputs+784outputs (0major+252minor)pagefaults 0swaps 0.00user 0.00system 0:00.23elapsed 2%CPU (0avgtext+0avgdata 3616maxresident)k 0inputs+784outputs (0major+253minor)pagefaults 0swaps 0.00user 0.00system 0:00.21elapsed 1%CPU (0avgtext+0avgdata 3616maxresident)k 789inputs+792outputs (0major+253minor)pagefaults 0swaps