== sanity test 101a: check read-ahead for random reads === 21:14:05 (1781226845) nreads: 10000 file size: 96MB 180.689453s, 2.91683MB/s osc.lustre-OST0000-osc-ffffa0fac8fa5000.rpc_stats= snapshot_time: 1781227049.102892202 secs.nsecs start_time: 1781226847.114218881 secs.nsecs elapsed_time: 201.988673321 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: 2 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 5253 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: 5259 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 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: 5 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 53 1 2 | 0 0 4 512: 111 2 4 | 0 0 4 1024: 195 3 7 | 1 4 8 2048: 457 8 16 | 2 8 16 4096: 878 16 33 | 4 16 32 8192: 1711 32 65 | 8 32 64 16384: 1799 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: 279 5 5 | 0 0 0 8192: 2543 48 53 | 0 0 0 16384: 1996 37 91 | 0 0 0 32768: 545 10 101 | 0 0 0 65536: 19 0 102 | 22 88 88 131072: 0 0 102 | 3 12 100 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 osc.lustre-OST0001-osc-ffffa0fac8fa5000.rpc_stats= snapshot_time: 1781227049.103025975 secs.nsecs start_time: 1781226847.114263838 secs.nsecs elapsed_time: 201.988762137 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-ffffa0fac8fa5000.read_ahead_stats= snapshot_time 1781227049.124646736 secs.nsecs start_time 1781226847.124076557 secs.nsecs elapsed_time 202.000570179 secs.nsecs hits 78793 samples [pages] misses 5259 samples [pages] readpage_not_consecutive 8037 samples [pages] zero_size_window 78793 samples [pages] failed_to_fast_read 5259 samples [pages] readahead_pages 5259 samples [pages] 2 15 78793