== sanity test 101a: check read-ahead for random reads === 03:40:49 (1722238849) nreads: 10000 file size: 96MB 13.963284s, 46.9345MB/s osc.lustre-OST0000-osc-ffff88012e2f2800.rpc_stats= snapshot_time: 1722238864.377299939 secs.nsecs start_time: 1722238849.644709652 secs.nsecs elapsed_time: 14.732590287 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 pending write pages: 9 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 0 0 0 osc.lustre-OST0001-osc-ffff88012e2f2800.rpc_stats= snapshot_time: 1722238864.377434063 secs.nsecs start_time: 1722238849.644783605 secs.nsecs elapsed_time: 14.732650458 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 pending write pages: 196 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 5097 100 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 99 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5097 100 100 | 86 86 86 2: 0 0 100 | 13 13 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 5 0 0 | 0 0 1 32: 7 0 0 | 0 0 1 64: 15 0 0 | 0 0 1 128: 25 0 1 | 0 0 1 256: 56 1 2 | 1 1 2 512: 107 2 4 | 2 2 4 1024: 209 4 8 | 4 4 8 2048: 439 8 16 | 8 8 16 4096: 869 17 34 | 16 16 32 8192: 1689 33 67 | 32 32 64 16384: 1673 32 100 | 35 35 100 llite.lustre-ffff88012e2f2800.read_ahead_stats= snapshot_time 1722238864.382213465 secs.nsecs start_time 1722238849.649229189 secs.nsecs elapsed_time 14.732984276 secs.nsecs hits 76454 samples [pages] misses 5097 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 76454 samples [pages] failed_to_fast_read 5097 samples [pages]