== sanity test 101a: check read-ahead for random reads === 23:08:55 (1786417735) nreads: 10000 file size: 96MB 173.738498s, 3.77211MB/s osc.lustre-OST0000-osc-ffff8b5609e2c000.rpc_stats= snapshot_time: 1786417928.214846949 secs.nsecs start_time: 1786417736.952438524 secs.nsecs elapsed_time: 191.262408425 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: 2 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 5 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 6558 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 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6567 99 99 | 24 96 96 2: 1 0 100 | 1 4 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 6 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 19 0 0 | 0 0 4 128: 32 0 1 | 0 0 4 256: 69 1 2 | 0 0 4 512: 132 2 4 | 0 0 4 1024: 251 3 7 | 1 4 8 2048: 559 8 16 | 2 8 16 4096: 1077 16 32 | 4 16 32 8192: 2175 33 65 | 8 32 64 16384: 2236 34 100 | 9 36 100 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 1: 0 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: 0 0 0 | 0 0 0 32: 0 0 0 | 0 0 0 64: 0 0 0 | 0 0 0 128: 0 0 0 | 0 0 0 256: 0 0 0 | 0 0 0 512: 0 0 0 | 0 0 0 1024: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 699 10 10 | 0 0 0 8192: 4642 70 81 | 0 0 0 16384: 1067 16 97 | 0 0 0 32768: 216 3 100 | 3 12 12 65536: 78 1 102 | 13 52 64 131072: 17 0 102 | 8 32 96 262144: 4 0 102 | 1 4 100 524288: 0 0 102 | 0 0 100 1048576: 0 0 102 | 0 0 100 2097152: 0 0 102 | 0 0 100 4194304: 0 0 102 | 0 0 100 8388608: 0 0 102 | 0 0 100 16777216: 0 0 102 | 0 0 100 33554432: 0 0 102 | 0 0 100 67108864: 0 0 102 | 0 0 100 134217728: 0 0 102 | 0 0 100 268435456: 0 0 102 | 0 0 100 536870912: 0 0 102 | 0 0 100 1073741824: 0 0 102 | 0 0 100 osc.lustre-OST0001-osc-ffff8b5609e2c000.rpc_stats= snapshot_time: 1786417928.214989182 secs.nsecs start_time: 1786417736.952467154 secs.nsecs elapsed_time: 191.262522028 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 | 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 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 llite.lustre-ffff8b5609e2c000.read_ahead_stats= snapshot_time 1786417928.230064142 secs.nsecs start_time 1786417736.963908234 secs.nsecs elapsed_time 191.266155908 secs.nsecs hits 98366 samples [pages] misses 6568 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 98367 samples [pages] failed_to_fast_read 6568 samples [pages] readahead_pages 6566 samples [pages] 2 15 98366