== sanity test 101a: check read-ahead for random reads === 03:00:05 (1788764405) nreads: 10000 file size: 96MB 180.232618s, 3.5631MB/s osc.lustre-OST0000-osc-ffff89d71f7c0800.rpc_stats= snapshot_time: 1788764610.141699367 secs.nsecs start_time: 1788764406.864271377 secs.nsecs elapsed_time: 203.277427990 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 | 1 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 1 100 100 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 | 1 100 100 osc.lustre-OST0001-osc-ffff89d71f7c0800.rpc_stats= snapshot_time: 1788764610.142047979 secs.nsecs start_time: 1788764406.864299364 secs.nsecs elapsed_time: 203.277748615 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: 2 0 0 | 0 0 0 2: 1 0 0 | 0 0 0 4: 3 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 4935 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: 4943 100 100 | 95 95 95 2: 0 0 100 | 5 5 100 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: 51 1 2 | 1 1 2 512: 105 2 4 | 2 2 4 1024: 205 4 8 | 4 4 8 2048: 423 8 16 | 8 8 16 4096: 832 16 33 | 16 16 32 8192: 1637 33 66 | 32 32 64 16384: 1635 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: 121 2 2 | 0 0 0 8192: 2137 43 45 | 1 1 1 16384: 2215 44 90 | 18 18 19 32768: 545 11 101 | 62 62 81 65536: 39 0 102 | 17 17 98 131072: 1 0 102 | 2 2 100 262144: 0 0 102 | 1 1 101 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 llite.lustre-ffff89d71f7c0800.read_ahead_stats= snapshot_time 1788764610.166256780 secs.nsecs start_time 1788764406.902218800 secs.nsecs elapsed_time 203.264037980 secs.nsecs hits 74021 samples [pages] misses 4943 samples [pages] readpage_not_consecutive 9791 samples [pages] zero_size_window 74022 samples [pages] failed_to_fast_read 4943 samples [pages] readahead_pages 4941 samples [pages] 1 15 74021