== sanity test 101a: check read-ahead for random reads === 19:15:48 (1755040548) nreads: 10000 file size: 96MB 45.195327s, 14.5006MB/s osc.lustre-OST0000-osc-ffff8c36851ca800.rpc_stats= snapshot_time: 1755040601.698836654 secs.nsecs start_time: 1755040549.044393161 secs.nsecs elapsed_time: 52.654443493 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 osc.lustre-OST0001-osc-ffff8c36851ca800.rpc_stats= snapshot_time: 1755040601.698895106 secs.nsecs start_time: 1755040549.044419853 secs.nsecs elapsed_time: 52.654475253 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 1 0 0 | 2 1 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 11 0 0 | 0 0 1 16: 4991 99 100 | 0 0 1 32: 0 0 100 | 0 0 1 64: 0 0 100 | 0 0 1 128: 0 0 100 | 0 0 1 256: 0 0 100 | 100 98 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5003 100 100 | 100 98 98 2: 0 0 100 | 2 1 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 3 2 2 1: 0 0 0 | 0 0 2 2: 0 0 0 | 0 0 2 4: 0 0 0 | 0 0 2 8: 0 0 0 | 0 0 2 16: 5 0 0 | 0 0 2 32: 7 0 0 | 0 0 2 64: 16 0 0 | 0 0 2 128: 26 0 1 | 0 0 2 256: 52 1 2 | 1 0 3 512: 107 2 4 | 2 1 5 1024: 205 4 8 | 4 3 9 2048: 428 8 16 | 8 7 17 4096: 857 17 34 | 16 15 33 8192: 1671 33 67 | 32 31 64 16384: 1626 32 100 | 36 35 100 llite.lustre-ffff8c36851ca800.read_ahead_stats= snapshot_time 1755040601.703735255 secs.nsecs start_time 1755040549.052131832 secs.nsecs elapsed_time 52.651603423 secs.nsecs hits 74898 samples [pages] misses 5003 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 74899 samples [pages] failed_to_fast_read 5003 samples [pages] readahead_pages 5002 samples [pages] 4 15 74898