== sanity test 101a: check read-ahead for random reads === 13:51:33 (1788803493) nreads: 10000 file size: 96MB 155.389955s, 4.21752MB/s osc.lustre-OST0000-osc-ffff9145c5f0e800.rpc_stats= snapshot_time: 1788803667.086484503 secs.nsecs start_time: 1788803495.124741481 secs.nsecs elapsed_time: 171.961743022 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: 1 0 0 | 0 0 0 8: 6 0 0 | 0 0 0 16: 5037 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: 5045 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: 53 1 2 | 1 0 2 512: 106 2 4 | 2 1 4 1024: 208 4 8 | 4 3 8 2048: 429 8 16 | 8 7 16 4096: 850 16 33 | 16 15 32 8192: 1670 33 66 | 32 31 64 16384: 1674 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: 261 5 5 | 0 0 0 8192: 2838 56 61 | 2 1 1 16384: 1729 34 95 | 60 59 61 32768: 301 5 101 | 36 35 97 65536: 35 0 102 | 4 3 100 131072: 0 0 102 | 0 0 100 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-ffff9145c5f0e800.rpc_stats= snapshot_time: 1788803667.086620836 secs.nsecs start_time: 1788803495.124783736 secs.nsecs elapsed_time: 171.961837100 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 | 1 50 50 2: 0 0 0 | 0 0 50 4: 0 0 0 | 0 0 50 8: 0 0 0 | 1 50 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 | 1 50 50 8192: 0 0 0 | 0 0 50 16384: 0 0 0 | 0 0 50 32768: 0 0 0 | 1 50 100 llite.lustre-ffff9145c5f0e800.read_ahead_stats= snapshot_time 1788803667.099297121 secs.nsecs start_time 1788803495.137511751 secs.nsecs elapsed_time 171.961785370 secs.nsecs hits 75555 samples [pages] misses 5045 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75556 samples [pages] failed_to_fast_read 5045 samples [pages] readahead_pages 5044 samples [pages] 3 15 75555