== sanity test 101a: check read-ahead for random reads === 15:54:17 (1788465257) nreads: 10000 file size: 96MB 180.533045s, 2.91246MB/s osc.lustre-OST0000-osc-ffff8965071bc000.rpc_stats= snapshot_time: 1788465461.077469145 secs.nsecs start_time: 1788465259.391439733 secs.nsecs elapsed_time: 201.686029412 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: 4 0 0 | 0 0 0 8: 6 0 0 | 0 0 0 16: 5259 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: 5271 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: 15 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 53 1 2 | 0 0 4 512: 112 2 4 | 0 0 4 1024: 199 3 7 | 1 4 8 2048: 455 8 16 | 2 8 16 4096: 869 16 33 | 4 16 32 8192: 1711 32 65 | 8 32 64 16384: 1817 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: 359 6 6 | 0 0 0 8192: 2554 48 55 | 0 0 0 16384: 1836 34 90 | 0 0 0 32768: 585 11 101 | 1 4 4 65536: 61 1 102 | 21 84 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-ffff8965071bc000.rpc_stats= snapshot_time: 1788465461.077611285 secs.nsecs start_time: 1788465259.391482440 secs.nsecs elapsed_time: 201.686128845 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-ffff8965071bc000.read_ahead_stats= snapshot_time 1788465461.094671173 secs.nsecs start_time 1788465259.408130767 secs.nsecs elapsed_time 201.686540406 secs.nsecs hits 78893 samples [pages] misses 5271 samples [pages] readpage_not_consecutive 8018 samples [pages] zero_size_window 78894 samples [pages] failed_to_fast_read 5271 samples [pages] readahead_pages 5270 samples [pages] 1 15 78893