== sanity test 101a: check read-ahead for random reads === 17:07:21 (1718399241) nreads: 10000 file size: 96MB 46.335424s, 14.1438MB/s osc.lustre-OST0000-osc-ffff88007cc7a800.rpc_stats= snapshot_time: 1718399290.545513780 secs.nsecs start_time: 1718399242.655480781 secs.nsecs elapsed_time: 47.890032999 secs.nsecs read RPCs in flight: 0 write 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 | 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-ffff88007cc7a800.rpc_stats= snapshot_time: 1718399290.547938938 secs.nsecs start_time: 1718399242.655547008 secs.nsecs elapsed_time: 47.892391930 secs.nsecs read RPCs in flight: 0 write 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 | 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: 6612 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 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6609 99 99 | 15 60 60 2: 3 0 100 | 9 36 96 3: 0 0 100 | 1 4 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 5 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 19 0 0 | 0 0 4 128: 32 0 1 | 0 0 4 256: 69 1 2 | 0 0 4 512: 136 2 4 | 0 0 4 1024: 256 3 8 | 1 4 8 2048: 578 8 16 | 2 8 16 4096: 1099 16 33 | 4 16 32 8192: 2223 33 67 | 8 32 64 16384: 2181 32 100 | 9 36 100 llite.lustre-ffff88007cc7a800.read_ahead_stats= snapshot_time 1718399290.559497883 secs.nsecs start_time 1718399242.662934225 secs.nsecs elapsed_time 47.896563658 secs.nsecs hits 99176 samples [pages] misses 6612 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 99176 samples [pages] failed_to_fast_read 6612 samples [pages]