== sanity test 101a: check read-ahead for random reads === 13:02:23 (1785776543) nreads: 10000 file size: 96MB 180.226718s, 2.31269MB/s osc.lustre-OST0000-osc-ffff8edc88037000.rpc_stats= snapshot_time: 1785776753.174096569 secs.nsecs start_time: 1785776545.930898052 secs.nsecs elapsed_time: 207.243198517 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 | 0 0 0 2: 0 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 3220 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: 3223 100 100 | 96 96 96 2: 0 0 100 | 4 4 100 read write offset rpcs % cum % | rpcs % cum % 0: 2 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: 3 0 0 | 0 0 1 32: 5 0 0 | 0 0 1 64: 10 0 0 | 0 0 1 128: 18 0 1 | 0 0 1 256: 33 1 2 | 1 1 2 512: 74 2 4 | 2 2 4 1024: 130 4 8 | 4 4 8 2048: 288 8 17 | 8 8 16 4096: 551 17 34 | 16 16 32 8192: 1081 33 68 | 32 32 64 16384: 1028 31 100 | 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: 49 1 1 | 0 0 0 8192: 742 23 24 | 0 0 0 16384: 1357 42 66 | 17 17 17 32768: 940 29 95 | 60 60 77 65536: 202 6 102 | 19 19 96 131072: 8 0 102 | 4 4 100 262144: 0 0 102 | 1 1 101 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 osc.lustre-OST0001-osc-ffff8edc88037000.rpc_stats= snapshot_time: 1785776753.179702549 secs.nsecs start_time: 1785776545.930921293 secs.nsecs elapsed_time: 207.248781256 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 | 0 0 0 32768: 0 0 0 | 1 100 100 llite.lustre-ffff8edc88037000.read_ahead_stats= snapshot_time 1785776753.209465409 secs.nsecs start_time 1785776545.967452631 secs.nsecs elapsed_time 207.242012778 secs.nsecs hits 48302 samples [pages] misses 3223 samples [pages] readpage_not_consecutive 6357 samples [pages] zero_size_window 48303 samples [pages] failed_to_fast_read 3223 samples [pages] readahead_pages 3222 samples [pages] 3 15 48302