== sanity test 101a: check read-ahead for random reads === 07:00:51 (1787396451) nreads: 10000 file size: 96MB 180.944826s, 3.33358MB/s osc.lustre-OST0000-osc-ffff8f3205e01800.rpc_stats= snapshot_time: 1787396655.087775491 secs.nsecs start_time: 1787396452.857419169 secs.nsecs elapsed_time: 202.230356322 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 | 2 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 50 50 32768: 0 0 0 | 1 50 100 osc.lustre-OST0001-osc-ffff8f3205e01800.rpc_stats= snapshot_time: 1787396655.087869284 secs.nsecs start_time: 1787396452.857445087 secs.nsecs elapsed_time: 202.230424197 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: 2 0 0 | 2 7 7 2: 2 0 0 | 0 0 7 4: 1 0 0 | 0 0 7 8: 5 0 0 | 1 3 10 16: 6025 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6035 100 100 | 26 92 92 2: 0 0 100 | 1 3 96 3: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 6 0 0 | 0 0 14 32: 8 0 0 | 0 0 14 64: 19 0 0 | 0 0 14 128: 29 0 1 | 0 0 14 256: 62 1 2 | 0 0 14 512: 124 2 4 | 0 0 14 1024: 227 3 7 | 1 3 17 2048: 512 8 16 | 2 7 25 4096: 991 16 32 | 4 14 39 8192: 1982 32 65 | 8 28 67 16384: 2070 34 100 | 9 32 100 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: 751 12 12 | 0 0 0 8192: 3241 53 66 | 0 0 0 16384: 1825 30 96 | 1 3 3 32768: 336 5 101 | 5 17 21 65536: 22 0 102 | 20 71 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 llite.lustre-ffff8f3205e01800.read_ahead_stats= snapshot_time 1787396655.099801451 secs.nsecs start_time 1787396452.873782119 secs.nsecs elapsed_time 202.226019332 secs.nsecs hits 90376 samples [pages] misses 6035 samples [pages] readpage_not_consecutive 9199 samples [pages] zero_size_window 90378 samples [pages] failed_to_fast_read 6035 samples [pages] readahead_pages 6033 samples [pages] 1 15 90376