== sanity test 101a: check read-ahead for random reads === 05:14:53 (1788686093) nreads: 10000 file size: 96MB 177.365724s, 3.69496MB/s osc.lustre-OST0000-osc-ffff954345ea1800.rpc_stats= snapshot_time: 1788686294.968494366 secs.nsecs start_time: 1788686096.005741148 secs.nsecs elapsed_time: 198.962753218 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: 5 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 5059 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: 5066 100 100 | 100 100 100 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: 27 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 108 2 4 | 2 2 4 1024: 206 4 8 | 4 4 8 2048: 429 8 16 | 8 8 16 4096: 854 16 33 | 16 16 32 8192: 1678 33 66 | 32 32 64 16384: 1682 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: 90 1 1 | 0 0 0 8192: 2286 45 46 | 0 0 0 16384: 2177 42 89 | 16 16 16 32768: 576 11 101 | 63 63 79 65536: 57 1 102 | 19 19 98 131072: 0 0 102 | 3 3 101 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-ffff954345ea1800.rpc_stats= snapshot_time: 1788686294.968594529 secs.nsecs start_time: 1788686096.005770654 secs.nsecs elapsed_time: 198.962823875 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-ffff954345ea1800.read_ahead_stats= snapshot_time 1788686294.980142344 secs.nsecs start_time 1788686096.047077613 secs.nsecs elapsed_time 198.933064731 secs.nsecs hits 75872 samples [pages] misses 5066 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75876 samples [pages] failed_to_fast_read 5066 samples [pages] readahead_pages 5061 samples [pages] 2 15 75872