== sanity test 101a: check read-ahead for random reads === 02:34:58 (1788330898) nreads: 10000 file size: 96MB 180.933810s, 2.68977MB/s osc.lustre-OST0000-osc-ffff9510117e2800.rpc_stats= snapshot_time: 1788331097.110894591 secs.nsecs start_time: 1788330900.577308979 secs.nsecs elapsed_time: 196.533585612 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: 2 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 6 0 0 | 0 0 0 16: 4853 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: 4865 100 100 | 24 96 96 2: 0 0 100 | 1 4 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 4 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 12 0 0 | 0 0 4 128: 21 0 1 | 0 0 4 256: 52 1 2 | 0 0 4 512: 102 2 4 | 0 0 4 1024: 182 3 7 | 1 4 8 2048: 422 8 16 | 2 8 16 4096: 807 16 33 | 4 16 32 8192: 1580 32 65 | 8 32 64 16384: 1670 34 100 | 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: 33 0 0 | 0 0 0 8192: 1902 39 39 | 0 0 0 16384: 2371 48 88 | 0 0 0 32768: 627 12 101 | 8 32 32 65536: 46 0 102 | 14 56 88 131072: 0 0 102 | 2 8 96 262144: 0 0 102 | 1 4 100 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 osc.lustre-OST0001-osc-ffff9510117e2800.rpc_stats= snapshot_time: 1788331097.112510306 secs.nsecs start_time: 1788330900.577339999 secs.nsecs elapsed_time: 196.535170307 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-ffff9510117e2800.read_ahead_stats= snapshot_time 1788331097.155696580 secs.nsecs start_time 1788330900.602142677 secs.nsecs elapsed_time 196.553553903 secs.nsecs hits 72828 samples [pages] misses 4865 samples [pages] readpage_not_consecutive 7422 samples [pages] zero_size_window 72831 samples [pages] failed_to_fast_read 4865 samples [pages] readahead_pages 4862 samples [pages] 1 15 72828