== sanity test 101a: check read-ahead for random reads === 04:55:54 (1713344154) nreads: 10000 file size: 96MB 23.473666s, 27.9189MB/s osc.lustre-OST0000-osc-ffff8800b5a54800.rpc_stats= snapshot_time: 1713344178.717909925 secs.nsecs start_time: 1713344154.505596428 secs.nsecs elapsed_time: 24.212313497 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-ffff8800b5a54800.rpc_stats= snapshot_time: 1713344178.723946543 secs.nsecs start_time: 1713344154.505645356 secs.nsecs elapsed_time: 24.218301187 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: 1 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: 5076 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: 5075 99 99 | 88 88 88 2: 2 0 100 | 10 10 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: 4 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 16 0 0 | 0 0 1 128: 27 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 109 2 4 | 2 2 4 1024: 207 4 8 | 4 4 8 2048: 433 8 16 | 8 8 16 4096: 867 17 33 | 16 16 32 8192: 1695 33 67 | 32 32 64 16384: 1657 32 100 | 35 35 100 llite.lustre-ffff8800b5a54800.read_ahead_stats= snapshot_time 1713344178.733738380 secs.nsecs start_time 1713344154.508681967 secs.nsecs elapsed_time 24.225056413 secs.nsecs hits 76138 samples [pages] misses 5077 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 76138 samples [pages] failed_to_fast_read 5077 samples [pages]