== sanity test 101a: check read-ahead for random reads === 20:01:18 (1718928078) nreads: 10000 file size: 96MB 13.700134s, 47.836MB/s osc.lustre-OST0000-osc-ffff880098a46800.rpc_stats= snapshot_time: 1718928093.277717722 secs.nsecs start_time: 1718928078.873918246 secs.nsecs elapsed_time: 14.403799476 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-ffff880098a46800.rpc_stats= snapshot_time: 1718928093.277858145 secs.nsecs start_time: 1718928078.873987888 secs.nsecs elapsed_time: 14.403870257 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: 2 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: 5093 99 100 | 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: 5095 100 100 | 83 83 83 2: 0 0 100 | 15 15 98 3: 0 0 100 | 1 1 100 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: 1692 33 67 | 32 32 64 16384: 1668 32 100 | 35 35 100 llite.lustre-ffff880098a46800.read_ahead_stats= snapshot_time 1718928093.280980140 secs.nsecs start_time 1718928078.876958576 secs.nsecs elapsed_time 14.404021564 secs.nsecs hits 76392 samples [pages] misses 5095 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 76394 samples [pages] failed_to_fast_read 5095 samples [pages]