== sanity test 101a: check read-ahead for random reads === 23:34:07 (1787110447) nreads: 10000 file size: 96MB 180.777049s, 3.42368MB/s osc.lustre-OST0000-osc-ffff9cc7419a5800.rpc_stats= snapshot_time: 1787110646.076560931 secs.nsecs start_time: 1787110448.495388266 secs.nsecs elapsed_time: 197.581172665 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: 2 0 0 | 0 0 0 16: 4769 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: 4773 100 100 | 98 98 98 2: 0 0 100 | 2 2 100 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: 49 1 2 | 1 1 2 512: 103 2 4 | 2 2 4 1024: 195 4 8 | 4 4 8 2048: 409 8 16 | 8 8 16 4096: 805 16 33 | 16 16 32 8192: 1580 33 66 | 32 32 64 16384: 1577 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: 265 5 5 | 0 0 0 8192: 2289 47 53 | 2 2 2 16384: 1715 35 89 | 51 51 53 32768: 531 11 100 | 43 43 96 65536: 86 1 102 | 6 6 102 131072: 0 0 102 | 0 0 102 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-ffff9cc7419a5800.rpc_stats= snapshot_time: 1787110646.076713118 secs.nsecs start_time: 1787110448.495419131 secs.nsecs elapsed_time: 197.581293987 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-ffff9cc7419a5800.read_ahead_stats= snapshot_time 1787110646.093526695 secs.nsecs start_time 1787110448.506280578 secs.nsecs elapsed_time 197.587246117 secs.nsecs hits 71526 samples [pages] misses 4773 samples [pages] readpage_not_consecutive 9437 samples [pages] zero_size_window 71526 samples [pages] failed_to_fast_read 4773 samples [pages] readahead_pages 4773 samples [pages] 3 15 71526