== sanity test 101a: check read-ahead for random reads === 18:35:05 (1789079705) nreads: 10000 file size: 96MB 126.712192s, 5.17204MB/s osc.lustre-OST0000-osc-ffff8a5943cf2800.rpc_stats= snapshot_time: 1789079848.913556298 secs.nsecs start_time: 1789079706.802945476 secs.nsecs elapsed_time: 142.110610822 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-ffff8a5943cf2800.rpc_stats= snapshot_time: 1789079848.913625418 secs.nsecs start_time: 1789079706.802972741 secs.nsecs elapsed_time: 142.110652677 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: 1 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 5029 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: 5035 100 100 | 96 96 96 2: 0 0 100 | 3 3 99 3: 0 0 100 | 1 1 100 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: 106 2 4 | 2 2 4 1024: 208 4 8 | 4 4 8 2048: 430 8 16 | 8 8 16 4096: 852 16 33 | 16 16 32 8192: 1669 33 66 | 32 32 64 16384: 1663 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: 774 15 15 | 0 0 0 8192: 3111 61 77 | 2 2 2 16384: 1156 22 100 | 60 60 62 32768: 111 2 102 | 35 35 97 65536: 2 0 102 | 4 4 101 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 llite.lustre-ffff8a5943cf2800.read_ahead_stats= snapshot_time 1789079848.922911574 secs.nsecs start_time 1789079706.819875887 secs.nsecs elapsed_time 142.103035687 secs.nsecs hits 75457 samples [pages] misses 5035 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75457 samples [pages] failed_to_fast_read 5035 samples [pages] readahead_pages 5035 samples [pages] 1 15 75457