== sanity test 101a: check read-ahead for random reads === 22:40:54 (1789267254) nreads: 10000 file size: 96MB 180.802139s, 2.75081MB/s osc.lustre-OST0000-osc-ffff8bd5191a6000.rpc_stats= snapshot_time: 1789267462.085500825 secs.nsecs start_time: 1789267256.839884956 secs.nsecs elapsed_time: 205.245615869 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 | 1 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 1 100 100 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 | 0 0 0 16384: 0 0 0 | 1 100 100 osc.lustre-OST0001-osc-ffff8bd5191a6000.rpc_stats= snapshot_time: 1789267462.085669454 secs.nsecs start_time: 1789267256.839918703 secs.nsecs elapsed_time: 205.245750751 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: 1 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 4975 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: 4981 100 100 | 25 100 100 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: 13 0 0 | 0 0 4 128: 21 0 1 | 0 0 4 256: 53 1 2 | 0 0 4 512: 106 2 4 | 0 0 4 1024: 183 3 7 | 1 4 8 2048: 429 8 16 | 2 8 16 4096: 823 16 33 | 4 16 32 8192: 1625 32 65 | 8 32 64 16384: 1711 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: 72 1 1 | 0 0 0 8192: 2104 42 43 | 0 0 0 16384: 2356 47 90 | 0 0 0 32768: 532 10 101 | 0 0 0 65536: 34 0 102 | 12 48 48 131072: 0 0 102 | 13 52 100 262144: 0 0 102 | 0 0 100 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 llite.lustre-ffff8bd5191a6000.read_ahead_stats= snapshot_time 1789267462.103901930 secs.nsecs start_time 1789267256.878433772 secs.nsecs elapsed_time 205.225468158 secs.nsecs hits 74605 samples [pages] misses 4981 samples [pages] readpage_not_consecutive 7585 samples [pages] zero_size_window 74606 samples [pages] failed_to_fast_read 4981 samples [pages] readahead_pages 4980 samples [pages] 1 15 74605