== sanity test 101a: check read-ahead for random reads === 11:07:00 (1786633620) nreads: 10000 file size: 96MB 180.852434s, 2.94102MB/s osc.lustre-OST0000-osc-ffff9db6086ae800.rpc_stats= snapshot_time: 1786633824.095323751 secs.nsecs start_time: 1786633622.586678322 secs.nsecs elapsed_time: 201.508645429 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-ffff9db6086ae800.rpc_stats= snapshot_time: 1786633824.095647126 secs.nsecs start_time: 1786633622.586713792 secs.nsecs elapsed_time: 201.508933334 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: 3 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 5369 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 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5372 99 99 | 25 100 100 2: 1 0 100 | 0 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 5 0 0 | 0 0 4 32: 6 0 0 | 0 0 4 64: 18 0 0 | 0 0 4 128: 25 0 1 | 0 0 4 256: 54 1 2 | 0 0 4 512: 116 2 4 | 0 0 4 1024: 208 3 8 | 1 4 8 2048: 467 8 16 | 2 8 16 4096: 897 16 33 | 4 16 32 8192: 1754 32 66 | 8 32 64 16384: 1819 33 100 | 9 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: 289 5 5 | 0 0 0 8192: 2652 49 54 | 0 0 0 16384: 2031 37 92 | 0 0 0 32768: 488 9 101 | 4 16 16 65536: 39 0 102 | 20 80 96 131072: 0 0 102 | 1 4 100 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-ffff9db6086ae800.read_ahead_stats= snapshot_time 1786633824.108260328 secs.nsecs start_time 1786633622.602278845 secs.nsecs elapsed_time 201.505981483 secs.nsecs hits 80514 samples [pages] misses 5373 samples [pages] readpage_not_consecutive 8111 samples [pages] zero_size_window 80516 samples [pages] failed_to_fast_read 5373 samples [pages] readahead_pages 5370 samples [pages] 4 15 80514