== sanity test 101a: check read-ahead for random reads === 04:55:20 (1789289720) nreads: 10000 file size: 96MB 128.455546s, 5.10184MB/s osc.lustre-OST0000-osc-ffff9f6490adf800.rpc_stats= snapshot_time: 1789289864.954047277 secs.nsecs start_time: 1789289721.570367460 secs.nsecs elapsed_time: 143.383679817 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 osc.lustre-OST0001-osc-ffff9f6490adf800.rpc_stats= snapshot_time: 1789289864.954202323 secs.nsecs start_time: 1789289721.570394875 secs.nsecs elapsed_time: 143.383807448 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 | 0 0 0 2: 0 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 5052 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: 5058 100 100 | 97 97 97 2: 0 0 100 | 3 3 100 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: 107 2 4 | 2 2 4 1024: 207 4 8 | 4 4 8 2048: 427 8 16 | 8 8 16 4096: 854 16 33 | 16 16 32 8192: 1680 33 66 | 32 32 64 16384: 1674 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: 566 11 11 | 0 0 0 8192: 3291 65 76 | 5 5 5 16384: 1149 22 98 | 49 49 54 32768: 157 3 102 | 37 37 91 65536: 14 0 102 | 9 9 100 131072: 0 0 102 | 1 1 101 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 llite.lustre-ffff9f6490adf800.read_ahead_stats= snapshot_time 1789289864.969336114 secs.nsecs start_time 1789289721.603084584 secs.nsecs elapsed_time 143.366251530 secs.nsecs hits 75800 samples [pages] misses 5058 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75800 samples [pages] failed_to_fast_read 5058 samples [pages] readahead_pages 5057 samples [pages] 3 15 75800