== sanity test 101a: check read-ahead for random reads === 13:25:52 (1741627552) nreads: 10000 file size: 96MB 41.350888s, 15.8488MB/s osc.lustre-OST0000-osc-ffff88012b2ca000.rpc_stats= snapshot_time: 1741627605.759722796 secs.nsecs start_time: 1741627552.580358751 secs.nsecs elapsed_time: 53.179364045 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO 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 50 50 2: 0 0 0 | 2 50 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 25 25 2: 0 0 0 | 1 25 50 3: 0 0 0 | 1 25 75 4: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 osc.lustre-OST0001-osc-ffff88012b2ca000.rpc_stats= snapshot_time: 1741627605.759811018 secs.nsecs start_time: 1741627552.580372188 secs.nsecs elapsed_time: 53.179438830 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO 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 7 7 2: 0 0 0 | 0 0 7 4: 1 0 0 | 0 0 7 8: 2 0 0 | 1 3 10 16: 6334 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6337 100 100 | 26 92 92 2: 0 0 100 | 1 3 96 3: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 5 0 0 | 0 0 14 32: 7 0 0 | 0 0 14 64: 22 0 0 | 0 0 14 128: 34 0 1 | 0 0 14 256: 74 1 2 | 0 0 14 512: 141 2 4 | 0 0 14 1024: 271 4 8 | 1 3 17 2048: 582 9 17 | 2 7 25 4096: 1145 18 36 | 4 14 39 8192: 2202 34 70 | 8 28 67 16384: 1850 29 100 | 9 32 100 llite.lustre-ffff88012b2ca000.read_ahead_stats= snapshot_time 1741627605.763246526 secs.nsecs start_time 1741627552.583272747 secs.nsecs elapsed_time 53.179973779 secs.nsecs hits 94995 samples [pages] misses 6337 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 94995 samples [pages] failed_to_fast_read 6337 samples [pages] readahead_pages 6337 samples [pages] 3 15 94995