== sanity test 101a: check read-ahead for random reads === 04:33:17 (1787301197) nreads: 10000 file size: 96MB 180.535987s, 3.60249MB/s osc.lustre-OST0000-osc-ffff952661708000.rpc_stats= snapshot_time: 1787301404.119794542 secs.nsecs start_time: 1787301199.551866963 secs.nsecs elapsed_time: 204.567927579 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 | 0 0 0 2: 2 0 0 | 0 0 0 4: 4 0 0 | 0 0 0 8: 6 0 0 | 0 0 0 16: 4992 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: 5004 100 100 | 100 100 100 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: 52 1 2 | 1 1 2 512: 105 2 4 | 2 2 4 1024: 208 4 8 | 4 4 8 2048: 426 8 16 | 8 8 16 4096: 843 16 33 | 16 16 32 8192: 1656 33 66 | 32 32 64 16384: 1659 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: 84 1 1 | 0 0 0 8192: 2245 44 46 | 1 0 0 16384: 2162 43 89 | 22 21 22 32768: 580 11 101 | 65 63 86 65536: 50 0 102 | 14 13 100 131072: 0 0 102 | 1 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-ffff952661708000.rpc_stats= snapshot_time: 1787301404.119942238 secs.nsecs start_time: 1787301199.551918272 secs.nsecs elapsed_time: 204.568023966 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 | 0 0 0 16384: 0 0 0 | 1 33 33 32768: 0 0 0 | 2 66 100 llite.lustre-ffff952661708000.read_ahead_stats= snapshot_time 1787301404.134603639 secs.nsecs start_time 1787301199.568978295 secs.nsecs elapsed_time 204.565625344 secs.nsecs hits 74909 samples [pages] misses 5004 samples [pages] readpage_not_consecutive 9916 samples [pages] zero_size_window 74909 samples [pages] failed_to_fast_read 5004 samples [pages] readahead_pages 5004 samples [pages] 1 15 74909