== sanity test 101a: check read-ahead for random reads === 11:29:05 (1761319745) nreads: 10000 file size: 96MB 53.339173s, 12.2867MB/s osc.lustre-OST0000-osc-ffff8f01a181c000.rpc_stats= snapshot_time: 1761319802.148362170 secs.nsecs start_time: 1761319746.909550524 secs.nsecs elapsed_time: 55.238811646 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 | 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-ffff8f01a181c000.rpc_stats= snapshot_time: 1761319802.149858491 secs.nsecs start_time: 1761319746.909577650 secs.nsecs elapsed_time: 55.240280841 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 | 2 1 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 5081 100 100 | 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: 5072 99 99 | 43 42 42 2: 9 0 100 | 52 50 93 3: 0 0 100 | 7 6 100 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: 4 0 0 | 0 0 2 32: 6 0 0 | 0 0 2 64: 16 0 0 | 0 0 2 128: 27 0 1 | 0 0 2 256: 53 1 2 | 1 0 3 512: 109 2 4 | 2 1 5 1024: 207 4 8 | 4 3 9 2048: 433 8 16 | 8 7 17 4096: 866 17 33 | 16 15 33 8192: 1692 33 67 | 32 31 64 16384: 1665 32 100 | 36 35 100 llite.lustre-ffff8f01a181c000.read_ahead_stats= snapshot_time 1761319802.178872048 secs.nsecs start_time 1761319746.924813953 secs.nsecs elapsed_time 55.254058095 secs.nsecs hits 76213 samples [pages] misses 5081 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 76213 samples [pages] failed_to_fast_read 5081 samples [pages]