== sanity test 101a: check read-ahead for random reads === 03:17:02 (1789456622) nreads: 10000 file size: 96MB 180.893618s, 3.12874MB/s osc.lustre-OST0000-osc-ffff932c3e1cd800.rpc_stats= snapshot_time: 1789456825.099049053 secs.nsecs start_time: 1789456624.103510383 secs.nsecs elapsed_time: 200.995538670 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: 3 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 5694 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 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5703 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 5 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 18 0 0 | 0 0 4 128: 26 0 1 | 0 0 4 256: 59 1 2 | 0 0 4 512: 121 2 4 | 0 0 4 1024: 217 3 8 | 1 4 8 2048: 481 8 16 | 2 8 16 4096: 941 16 32 | 4 16 32 8192: 1870 32 65 | 8 32 64 16384: 1954 34 100 | 9 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: 461 8 8 | 0 0 0 8192: 2880 50 58 | 0 0 0 16384: 2022 35 94 | 0 0 0 32768: 435 7 101 | 3 12 12 65536: 39 0 102 | 20 80 92 131072: 0 0 102 | 2 8 100 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-ffff932c3e1cd800.rpc_stats= snapshot_time: 1789456825.099190700 secs.nsecs start_time: 1789456624.103542358 secs.nsecs elapsed_time: 200.995648342 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 llite.lustre-ffff932c3e1cd800.read_ahead_stats= snapshot_time 1789456825.146227875 secs.nsecs start_time 1789456624.117408292 secs.nsecs elapsed_time 201.028819583 secs.nsecs hits 85419 samples [pages] misses 5703 samples [pages] readpage_not_consecutive 8631 samples [pages] zero_size_window 85419 samples [pages] failed_to_fast_read 5703 samples [pages] readahead_pages 5703 samples [pages] 1 15 85419