== sanity test 101a: check read-ahead for random reads === 16:53:43 (1787604823) nreads: 10000 file size: 96MB 180.540904s, 3.60021MB/s osc.lustre-OST0000-osc-ffffa0f38312d800.rpc_stats= snapshot_time: 1787605021.153858817 secs.nsecs start_time: 1787604825.325460015 secs.nsecs elapsed_time: 195.828398802 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 2: 0 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 4989 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 | 100 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4992 100 100 | 99 99 99 2: 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: 26 0 1 | 0 0 1 256: 52 1 2 | 1 1 2 512: 105 2 4 | 2 2 4 1024: 208 4 8 | 4 4 8 2048: 426 8 16 | 8 8 16 4096: 842 16 33 | 16 16 32 8192: 1650 33 66 | 32 32 64 16384: 1654 33 100 | 36 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: 119 2 2 | 0 0 0 8192: 2159 43 45 | 6 6 6 16384: 2201 44 89 | 37 37 43 32768: 567 11 101 | 51 51 94 65536: 63 1 102 | 7 7 101 131072: 0 0 102 | 0 0 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 osc.lustre-OST0001-osc-ffffa0f38312d800.rpc_stats= snapshot_time: 1787605021.153994158 secs.nsecs start_time: 1787604825.325494580 secs.nsecs elapsed_time: 195.828499578 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-ffffa0f38312d800.read_ahead_stats= snapshot_time 1787605021.170185739 secs.nsecs start_time 1787604825.359476432 secs.nsecs elapsed_time 195.810709307 secs.nsecs hits 74818 samples [pages] misses 4992 samples [pages] readpage_not_consecutive 9910 samples [pages] zero_size_window 74818 samples [pages] failed_to_fast_read 4992 samples [pages] readahead_pages 4992 samples [pages] 2 15 74818