== sanity test 101a: check read-ahead for random reads === 18:54:52 (1787698492) nreads: 10000 file size: 96MB 180.523255s, 3.60819MB/s osc.lustre-OST0000-osc-ffff98f2b546e800.rpc_stats= snapshot_time: 1787698691.112616183 secs.nsecs start_time: 1787698494.215667321 secs.nsecs elapsed_time: 196.896948862 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: 3 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 5008 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: 5015 100 100 | 99 99 99 2: 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: 206 4 8 | 4 4 8 2048: 425 8 16 | 8 8 16 4096: 846 16 33 | 16 16 32 8192: 1660 33 66 | 32 32 64 16384: 1665 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: 57 1 1 | 0 0 0 8192: 2189 43 44 | 1 1 1 16384: 2256 44 89 | 44 44 45 32768: 586 11 101 | 46 46 91 65536: 45 0 102 | 9 9 100 131072: 0 0 102 | 2 2 102 262144: 0 0 102 | 0 0 102 524288: 0 0 102 | 0 0 102 1048576: 0 0 102 | 0 0 102 2097152: 0 0 102 | 0 0 102 4194304: 0 0 102 | 0 0 102 8388608: 0 0 102 | 0 0 102 16777216: 0 0 102 | 0 0 102 33554432: 0 0 102 | 0 0 102 67108864: 0 0 102 | 0 0 102 134217728: 0 0 102 | 0 0 102 268435456: 0 0 102 | 0 0 102 536870912: 0 0 102 | 0 0 102 1073741824: 0 0 102 | 0 0 102 osc.lustre-OST0001-osc-ffff98f2b546e800.rpc_stats= snapshot_time: 1787698691.112755783 secs.nsecs start_time: 1787698494.215724620 secs.nsecs elapsed_time: 196.897031163 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 | 1 50 50 2: 0 0 0 | 0 0 50 4: 0 0 0 | 0 0 50 8: 0 0 0 | 1 50 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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: 0 0 0 | 0 0 0 8192: 0 0 0 | 1 50 50 16384: 0 0 0 | 0 0 50 32768: 0 0 0 | 1 50 100 llite.lustre-ffff98f2b546e800.read_ahead_stats= snapshot_time 1787698691.131303146 secs.nsecs start_time 1787698494.267552182 secs.nsecs elapsed_time 196.863750964 secs.nsecs hits 75137 samples [pages] misses 5015 samples [pages] readpage_not_consecutive 9931 samples [pages] zero_size_window 75137 samples [pages] failed_to_fast_read 5015 samples [pages] readahead_pages 5015 samples [pages] 2 15 75137