== sanity test 101a: check read-ahead for random reads === 16:53:52 (1781211232) nreads: 10000 file size: 96MB 180.509169s, 2.5781MB/s osc.lustre-OST0000-osc-ffff990605746800.rpc_stats= snapshot_time: 1781211437.155115769 secs.nsecs start_time: 1781211234.274551967 secs.nsecs elapsed_time: 202.880563802 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 | 2 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 50 50 2: 0 0 0 | 1 50 100 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 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 0 0 0 32768: 0 0 0 | 1 50 50 65536: 0 0 0 | 1 50 100 osc.lustre-OST0001-osc-ffff990605746800.rpc_stats= snapshot_time: 1781211437.155207998 secs.nsecs start_time: 1781211234.274595164 secs.nsecs elapsed_time: 202.880612834 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 | 2 7 7 2: 1 0 0 | 0 0 7 4: 2 0 0 | 0 0 7 8: 1 0 0 | 1 3 10 16: 4686 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4690 100 100 | 27 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 5 0 0 | 0 0 14 32: 6 0 0 | 0 0 14 64: 14 0 0 | 0 0 14 128: 23 0 1 | 0 0 14 256: 46 0 2 | 0 0 14 512: 99 2 4 | 0 0 14 1024: 186 3 8 | 1 3 17 2048: 409 8 16 | 2 7 25 4096: 784 16 33 | 4 14 39 8192: 1516 32 65 | 8 28 67 16384: 1599 34 100 | 9 32 100 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: 394 8 8 | 0 0 0 8192: 1796 38 46 | 1 3 3 16384: 1874 39 86 | 0 0 3 32768: 672 14 100 | 0 0 3 65536: 62 1 102 | 19 67 71 131072: 2 0 102 | 8 28 100 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-ffff990605746800.read_ahead_stats= snapshot_time 1781211437.201230203 secs.nsecs start_time 1781211234.301890178 secs.nsecs elapsed_time 202.899340025 secs.nsecs hits 70297 samples [pages] misses 4690 samples [pages] readpage_not_consecutive 7097 samples [pages] zero_size_window 70297 samples [pages] failed_to_fast_read 4690 samples [pages] readahead_pages 4690 samples [pages] 1 15 70297