== sanity test 101a: check read-ahead for random reads === 10:01:44 (1746626504) nreads: 10000 file size: 96MB 28.407778s, 23.0697MB/s osc.lustre-OST0000-osc-ffff880083b51800.rpc_stats= snapshot_time: 1746626536.392292430 secs.nsecs start_time: 1746626504.593025971 secs.nsecs elapsed_time: 31.799266459 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 | 1 25 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 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-ffff880083b51800.rpc_stats= snapshot_time: 1746626536.392397738 secs.nsecs start_time: 1746626504.593037229 secs.nsecs elapsed_time: 31.799360509 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 192 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 1 1 2: 3 0 0 | 1 0 2 4: 3 0 0 | 0 0 2 8: 4 0 0 | 0 0 2 16: 4975 99 100 | 0 0 2 32: 0 0 100 | 0 0 2 64: 0 0 100 | 0 0 2 128: 0 0 100 | 0 0 2 256: 0 0 100 | 99 97 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4985 100 100 | 100 98 98 2: 0 0 100 | 1 0 99 3: 0 0 100 | 1 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 4 3 3 1: 0 0 0 | 0 0 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 5 0 0 | 0 0 3 32: 7 0 0 | 0 0 3 64: 16 0 0 | 0 0 3 128: 25 0 1 | 0 0 3 256: 56 1 2 | 1 0 4 512: 110 2 4 | 2 1 6 1024: 215 4 8 | 4 3 10 2048: 443 8 17 | 8 7 18 4096: 875 17 35 | 16 15 34 8192: 1715 34 69 | 32 31 65 16384: 1515 30 100 | 35 34 100 llite.lustre-ffff880083b51800.read_ahead_stats= snapshot_time 1746626536.395799929 secs.nsecs start_time 1746626504.597247675 secs.nsecs elapsed_time 31.798552254 secs.nsecs hits 74629 samples [pages] misses 4985 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 74629 samples [pages] failed_to_fast_read 4985 samples [pages] readahead_pages 4985 samples [pages] 1 15 74629