== sanity test 101a: check read-ahead for random reads === 12:38:15 (1790786295) nreads: 10000 file size: 96MB 134.480723s, 4.87326MB/s osc.lustre-OST0000-osc-ffff9f7261978000.rpc_stats= snapshot_time: 1790786448.695668997 secs.nsecs start_time: 1790786297.276504148 secs.nsecs elapsed_time: 151.419164849 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 | 1 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 5036 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 99 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5038 100 100 | 101 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 2 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: 52 1 2 | 1 0 2 512: 107 2 4 | 2 1 4 1024: 208 4 8 | 4 3 8 2048: 430 8 16 | 8 7 16 4096: 853 16 33 | 16 15 32 8192: 1669 33 66 | 32 31 64 16384: 1664 33 100 | 36 35 100 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: 506 10 10 | 0 0 0 8192: 3130 62 72 | 1 0 0 16384: 1375 27 99 | 44 43 44 32768: 142 2 102 | 54 53 98 65536: 4 0 102 | 4 3 101 131072: 0 0 102 | 0 0 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 osc.lustre-OST0001-osc-ffff9f7261978000.rpc_stats= snapshot_time: 1790786448.697047081 secs.nsecs start_time: 1790786297.276536758 secs.nsecs elapsed_time: 151.420510323 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 | 3 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 50 50 2: 0 0 0 | 2 50 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 1 25 25 16384: 0 0 0 | 3 75 100 llite.lustre-ffff9f7261978000.read_ahead_stats= snapshot_time 1790786448.723678978 secs.nsecs start_time 1790786297.296646447 secs.nsecs elapsed_time 151.427032531 secs.nsecs hits 75515 samples [pages] misses 5038 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75516 samples [pages] failed_to_fast_read 5038 samples [pages] readahead_pages 5037 samples [pages] 6 15 75515