== sanity test 101a: check read-ahead for random reads === 14:36:34 (1780338994) nreads: 10000 file size: 96MB 154.262446s, 4.24834MB/s osc.lustre-OST0000-osc-ffff88ebd00fc800.rpc_stats= snapshot_time: 1780339168.720039293 secs.nsecs start_time: 1780338996.515273405 secs.nsecs elapsed_time: 172.204765888 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 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 0 0 0 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 osc.lustre-OST0001-osc-ffff88ebd00fc800.rpc_stats= snapshot_time: 1780339168.720116746 secs.nsecs start_time: 1780338996.515322343 secs.nsecs elapsed_time: 172.204794403 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: 0 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 5048 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: 5051 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: 17 0 0 | 0 0 1 128: 27 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 107 2 4 | 2 2 4 1024: 207 4 8 | 4 4 8 2048: 427 8 16 | 8 8 16 4096: 851 16 33 | 16 16 32 8192: 1678 33 66 | 32 32 64 16384: 1671 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: 4 0 0 | 0 0 0 4096: 555 10 11 | 0 0 0 8192: 2652 52 63 | 5 5 5 16384: 1549 30 94 | 28 28 33 32768: 379 7 101 | 57 57 90 65536: 31 0 102 | 11 11 101 131072: 0 0 102 | 0 0 101 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-ffff88ebd00fc800.read_ahead_stats= snapshot_time 1780339168.730496948 secs.nsecs start_time 1780338996.555901305 secs.nsecs elapsed_time 172.174595643 secs.nsecs hits 75711 samples [pages] misses 5051 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75711 samples [pages] failed_to_fast_read 5051 samples [pages] readahead_pages 5051 samples [pages] 3 15 75711