== sanity test 101a: check read-ahead for random reads === 00:33:58 (1781238838) nreads: 10000 file size: 96MB 162.741666s, 4.027MB/s osc.lustre-OST0000-osc-ffff96a044cf7800.rpc_stats= snapshot_time: 1781239019.410743483 secs.nsecs start_time: 1781238839.505735814 secs.nsecs elapsed_time: 179.905007669 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 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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 33 33 16384: 0 0 0 | 1 33 66 32768: 0 0 0 | 1 33 100 osc.lustre-OST0001-osc-ffff96a044cf7800.rpc_stats= snapshot_time: 1781239019.410843277 secs.nsecs start_time: 1781238839.505948451 secs.nsecs elapsed_time: 179.904894826 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 | 2 1 1 2: 1 0 0 | 0 0 1 4: 2 0 0 | 0 0 1 8: 1 0 0 | 0 0 1 16: 5042 99 100 | 0 0 1 32: 0 0 100 | 0 0 1 64: 0 0 100 | 0 0 1 128: 0 0 100 | 0 0 1 256: 0 0 100 | 100 98 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5047 100 100 | 98 96 96 2: 0 0 100 | 3 2 99 3: 0 0 100 | 1 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 3 2 2 1: 0 0 0 | 0 0 2 2: 0 0 0 | 0 0 2 4: 0 0 0 | 0 0 2 8: 0 0 0 | 0 0 2 16: 4 0 0 | 0 0 2 32: 6 0 0 | 0 0 2 64: 16 0 0 | 0 0 2 128: 26 0 1 | 0 0 2 256: 53 1 2 | 1 0 3 512: 107 2 4 | 2 1 5 1024: 207 4 8 | 4 3 9 2048: 426 8 16 | 8 7 17 4096: 852 16 33 | 16 15 33 8192: 1678 33 66 | 32 31 64 16384: 1669 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: 203 4 4 | 0 0 0 8192: 2575 51 55 | 3 2 2 16384: 2058 40 95 | 44 43 46 32768: 320 6 102 | 48 47 93 65536: 10 0 102 | 7 6 100 131072: 0 0 102 | 2 1 101 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 llite.lustre-ffff96a044cf7800.read_ahead_stats= snapshot_time 1781239019.445110932 secs.nsecs start_time 1781238839.518269174 secs.nsecs elapsed_time 179.926841758 secs.nsecs hits 75628 samples [pages] misses 5047 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75628 samples [pages] failed_to_fast_read 5047 samples [pages] readahead_pages 5046 samples [pages] 1 15 75628