== sanity test 101a: check read-ahead for random reads === 08:51:10 (1788871870) nreads: 10000 file size: 96MB 180.991495s, 3.10532MB/s osc.lustre-OST0000-osc-ffff9b3e77bea800.rpc_stats= snapshot_time: 1788872074.097532850 secs.nsecs start_time: 1788871872.888699722 secs.nsecs elapsed_time: 201.208833128 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: 1 0 0 | 1 3 3 2: 0 0 0 | 0 0 3 4: 5 0 0 | 0 0 3 8: 2 0 0 | 1 3 7 16: 5616 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 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: 5624 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 5 0 0 | 0 0 11 32: 8 0 0 | 0 0 11 64: 15 0 0 | 0 0 11 128: 24 0 1 | 0 0 11 256: 59 1 2 | 0 0 11 512: 118 2 4 | 0 0 11 1024: 207 3 7 | 1 3 14 2048: 476 8 16 | 2 7 22 4096: 920 16 32 | 4 14 37 8192: 1850 32 65 | 8 29 66 16384: 1937 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: 1 0 0 | 0 0 0 4096: 377 6 6 | 0 0 0 8192: 2931 52 58 | 0 0 0 16384: 1964 34 93 | 0 0 0 32768: 445 7 101 | 2 7 7 65536: 38 0 102 | 23 85 92 131072: 0 0 102 | 2 7 100 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-ffff9b3e77bea800.rpc_stats= snapshot_time: 1788872074.097646558 secs.nsecs start_time: 1788871872.888726941 secs.nsecs elapsed_time: 201.208919617 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 | 3 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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: 0 0 0 | 0 0 0 8192: 0 0 0 | 1 33 33 16384: 0 0 0 | 1 33 66 32768: 0 0 0 | 1 33 100 llite.lustre-ffff9b3e77bea800.read_ahead_stats= snapshot_time 1788872074.118725141 secs.nsecs start_time 1788871872.930639479 secs.nsecs elapsed_time 201.188085662 secs.nsecs hits 84226 samples [pages] misses 5624 samples [pages] readpage_not_consecutive 8571 samples [pages] zero_size_window 84226 samples [pages] failed_to_fast_read 5624 samples [pages] readahead_pages 5623 samples [pages] 2 15 84226