== sanity test 101a: check read-ahead for random reads === 21:16:40 (1787102200) nreads: 10000 file size: 96MB 67.329202s, 9.73367MB/s osc.lustre-OST0000-osc-ffff9ee4345e0800.rpc_stats= snapshot_time: 1787102277.043204370 secs.nsecs start_time: 1787102200.999988609 secs.nsecs elapsed_time: 76.043215761 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 2: 0 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 5039 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: 5040 100 100 | 100 100 100 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: 26 0 1 | 0 0 1 256: 52 1 2 | 1 1 2 512: 107 2 4 | 2 2 4 1024: 208 4 8 | 4 4 8 2048: 430 8 16 | 8 8 16 4096: 858 17 33 | 16 16 32 8192: 1674 33 67 | 32 32 64 16384: 1656 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: 678 13 13 | 0 0 0 4096: 3509 69 83 | 2 2 2 8192: 942 18 101 | 69 69 71 16384: 30 0 102 | 30 30 101 32768: 0 0 102 | 0 0 101 65536: 0 0 102 | 0 0 101 131072: 0 0 102 | 0 0 101 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 osc.lustre-OST0001-osc-ffff9ee4345e0800.rpc_stats= snapshot_time: 1787102277.043368732 secs.nsecs start_time: 1787102201.000015967 secs.nsecs elapsed_time: 76.043352765 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 llite.lustre-ffff9ee4345e0800.read_ahead_stats= snapshot_time 1787102277.049755658 secs.nsecs start_time 1787102201.010091521 secs.nsecs elapsed_time 76.039664137 secs.nsecs hits 75561 samples [pages] misses 5040 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75561 samples [pages] failed_to_fast_read 5040 samples [pages] readahead_pages 5040 samples [pages] 2 15 75561