== sanity test 101a: check read-ahead for random reads === 07:52:22 (1787831542) nreads: 10000 file size: 96MB 180.086962s, 3.15513MB/s osc.lustre-OST0000-osc-ffff8d274611e800.rpc_stats= snapshot_time: 1787831740.150938169 secs.nsecs start_time: 1787831544.115498238 secs.nsecs elapsed_time: 196.035439931 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: 3 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 5678 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 1 3 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 1 3 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5685 100 100 | 25 92 92 2: 0 0 100 | 2 7 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 1 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: 8 0 0 | 0 0 3 64: 17 0 0 | 0 0 3 128: 24 0 1 | 1 3 7 256: 46 0 1 | 1 3 11 512: 98 1 3 | 0 0 11 1024: 216 3 7 | 1 3 14 2048: 486 8 15 | 2 7 22 4096: 937 16 32 | 4 14 37 8192: 1890 33 65 | 8 29 66 16384: 1952 34 100 | 9 33 100 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: 498 8 8 | 0 0 0 8192: 2827 49 58 | 0 0 0 16384: 2062 36 94 | 0 0 0 32768: 417 7 102 | 9 33 33 65536: 14 0 102 | 17 62 96 131072: 1 0 102 | 1 3 100 262144: 0 0 102 | 0 0 100 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-ffff8d274611e800.rpc_stats= snapshot_time: 1787831740.151166215 secs.nsecs start_time: 1787831544.115527935 secs.nsecs elapsed_time: 196.035638280 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-ffff8d274611e800.read_ahead_stats= snapshot_time 1787831740.169331701 secs.nsecs start_time 1787831544.130485556 secs.nsecs elapsed_time 196.038846145 secs.nsecs hits 85151 samples [pages] misses 5685 samples [pages] readpage_not_consecutive 8665 samples [pages] zero_size_window 85151 samples [pages] failed_to_fast_read 5685 samples [pages] readahead_pages 5685 samples [pages] 2 15 85151