== sanity test 101a: check read-ahead for random reads === 03:33:43 (1787124823) nreads: 10000 file size: 96MB 180.260124s, 3.2888MB/s osc.lustre-OST0000-osc-ffff9f9cc7b61800.rpc_stats= snapshot_time: 1787125023.205701266 secs.nsecs start_time: 1787124825.603491869 secs.nsecs elapsed_time: 197.602209397 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-ffff9f9cc7b61800.rpc_stats= snapshot_time: 1787125023.205782591 secs.nsecs start_time: 1787124825.603525777 secs.nsecs elapsed_time: 197.602256814 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: 2 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 4576 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: 4583 100 100 | 91 91 91 2: 0 0 100 | 9 9 100 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: 15 0 0 | 0 0 1 128: 23 0 1 | 0 0 1 256: 47 1 2 | 1 1 2 512: 98 2 4 | 2 2 4 1024: 184 4 8 | 4 4 8 2048: 394 8 16 | 8 8 16 4096: 772 16 33 | 16 16 32 8192: 1527 33 67 | 32 32 64 16384: 1510 32 100 | 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: 98 2 2 | 0 0 0 8192: 1639 35 37 | 2 2 2 16384: 2256 49 87 | 30 30 32 32768: 655 14 101 | 52 52 84 65536: 43 0 102 | 13 13 97 131072: 0 0 102 | 4 4 101 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-ffff9f9cc7b61800.read_ahead_stats= snapshot_time 1787125023.250159931 secs.nsecs start_time 1787124825.651826785 secs.nsecs elapsed_time 197.598333146 secs.nsecs hits 68648 samples [pages] misses 4583 samples [pages] readpage_not_consecutive 9041 samples [pages] zero_size_window 68649 samples [pages] failed_to_fast_read 4583 samples [pages] readahead_pages 4582 samples [pages] 3 15 68648