== sanity test 101a: check read-ahead for random reads === 10:25:24 (1781274324) nreads: 10000 file size: 96MB 180.338661s, 3.23322MB/s osc.lustre-OST0000-osc-ffff8a7b474ff800.rpc_stats= snapshot_time: 1781274525.098313942 secs.nsecs start_time: 1781274325.849686948 secs.nsecs elapsed_time: 199.248626994 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-ffff8a7b474ff800.rpc_stats= snapshot_time: 1781274525.098394710 secs.nsecs start_time: 1781274325.849727923 secs.nsecs elapsed_time: 199.248666787 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: 1 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 4505 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: 4509 100 100 | 98 98 98 2: 0 0 100 | 2 2 100 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: 15 0 0 | 0 0 1 128: 23 0 1 | 0 0 1 256: 47 1 2 | 1 1 2 512: 96 2 4 | 2 2 4 1024: 180 3 8 | 4 4 8 2048: 392 8 16 | 8 8 16 4096: 756 16 33 | 16 16 32 8192: 1504 33 67 | 32 32 64 16384: 1483 32 100 | 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: 32 0 0 | 0 0 0 8192: 1519 33 34 | 1 1 1 16384: 2433 53 88 | 20 20 21 32768: 595 13 101 | 73 73 94 65536: 35 0 102 | 7 7 101 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-ffff8a7b474ff800.read_ahead_stats= snapshot_time 1781274525.110546486 secs.nsecs start_time 1781274325.878463757 secs.nsecs elapsed_time 199.232082729 secs.nsecs hits 67578 samples [pages] misses 4509 samples [pages] readpage_not_consecutive 8892 samples [pages] zero_size_window 67578 samples [pages] failed_to_fast_read 4509 samples [pages] readahead_pages 4509 samples [pages] 1 15 67578