== sanity test 101a: check read-ahead for random reads === 01:01:53 (1788930113) nreads: 10000 file size: 96MB 180.235791s, 2.93763MB/s osc.lustre-OST0000-osc-ffffa0e4d033c000.rpc_stats= snapshot_time: 1788930318.094834737 secs.nsecs start_time: 1788930115.319292977 secs.nsecs elapsed_time: 202.775541760 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 osc.lustre-OST0001-osc-ffffa0e4d033c000.rpc_stats= snapshot_time: 1788930318.094945282 secs.nsecs start_time: 1788930115.319323758 secs.nsecs elapsed_time: 202.775621524 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: 0 0 0 | 0 0 0 4: 3 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 5282 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: 5290 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: 113 2 4 | 0 0 4 1024: 198 3 7 | 1 4 8 2048: 458 8 16 | 2 8 16 4096: 868 16 32 | 4 16 32 8192: 1722 32 65 | 8 32 64 16384: 1823 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: 172 3 3 | 0 0 0 8192: 2700 51 54 | 0 0 0 16384: 1989 37 91 | 0 0 0 32768: 512 9 101 | 1 4 4 65536: 43 0 102 | 18 72 76 131072: 0 0 102 | 6 24 100 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-ffffa0e4d033c000.read_ahead_stats= snapshot_time 1788930318.126241042 secs.nsecs start_time 1788930115.340508595 secs.nsecs elapsed_time 202.785732447 secs.nsecs hits 79222 samples [pages] misses 5290 samples [pages] readpage_not_consecutive 8074 samples [pages] zero_size_window 79223 samples [pages] failed_to_fast_read 5290 samples [pages] readahead_pages 5289 samples [pages] 2 15 79222