== sanity test 101a: check read-ahead for random reads === 01:58:08 (1788587888) nreads: 10000 file size: 96MB 180.477013s, 2.63267MB/s osc.lustre-OST0000-osc-ffff91d091dc5800.rpc_stats= snapshot_time: 1788588094.128179235 secs.nsecs start_time: 1788587890.251186398 secs.nsecs elapsed_time: 203.876992837 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 | 1 3 3 2: 0 0 0 | 0 0 3 4: 1 0 0 | 0 0 3 8: 3 0 0 | 1 3 7 16: 4785 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: 4789 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 4 0 0 | 0 0 11 32: 6 0 0 | 0 0 11 64: 15 0 0 | 0 0 11 128: 21 0 1 | 0 0 11 256: 47 0 2 | 0 0 11 512: 101 2 4 | 0 0 11 1024: 189 3 8 | 1 3 14 2048: 412 8 16 | 2 7 22 4096: 801 16 33 | 4 14 37 8192: 1546 32 65 | 8 29 66 16384: 1643 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: 215 4 4 | 0 0 0 8192: 1980 41 45 | 0 0 0 16384: 2000 41 87 | 0 0 0 32768: 655 13 101 | 2 7 7 65536: 52 1 102 | 19 70 77 131072: 0 0 102 | 6 22 100 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-ffff91d091dc5800.rpc_stats= snapshot_time: 1788588094.128331448 secs.nsecs start_time: 1788587890.251227659 secs.nsecs elapsed_time: 203.877103789 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 | 0 0 0 16384: 0 0 0 | 1 33 33 32768: 0 0 0 | 2 66 100 llite.lustre-ffff91d091dc5800.read_ahead_stats= snapshot_time 1788588094.157769108 secs.nsecs start_time 1788587890.290395399 secs.nsecs elapsed_time 203.867373709 secs.nsecs hits 71754 samples [pages] misses 4789 samples [pages] readpage_not_consecutive 7246 samples [pages] zero_size_window 71754 samples [pages] failed_to_fast_read 4789 samples [pages] readahead_pages 4789 samples [pages] 2 15 71754