== sanity test 101a: check read-ahead for random reads === 00:54:16 (1763877256) nreads: 10000 file size: 96MB 47.590606s, 13.7708MB/s osc.lustre-OST0000-osc-ffff9860c6aaa800.rpc_stats= snapshot_time: 1763877313.402727548 secs.nsecs start_time: 1763877256.970191022 secs.nsecs elapsed_time: 56.432536526 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 | 2 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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 | 2 66 66 4096: 0 0 0 | 1 33 100 osc.lustre-OST0001-osc-ffff9860c6aaa800.rpc_stats= snapshot_time: 1763877313.402826157 secs.nsecs start_time: 1763877256.970219028 secs.nsecs elapsed_time: 56.432607129 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 | 2 1 1 2: 4 0 0 | 0 0 1 4: 3 0 0 | 0 0 1 8: 1 0 0 | 0 0 1 16: 5000 99 100 | 0 0 1 32: 0 0 100 | 0 0 1 64: 0 0 100 | 0 0 1 128: 0 0 100 | 0 0 1 256: 0 0 100 | 100 98 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5009 100 100 | 101 99 99 2: 0 0 100 | 1 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 3 2 2 1: 0 0 0 | 0 0 2 2: 0 0 0 | 0 0 2 4: 0 0 0 | 0 0 2 8: 0 0 0 | 0 0 2 16: 5 0 0 | 0 0 2 32: 6 0 0 | 0 0 2 64: 16 0 0 | 0 0 2 128: 26 0 1 | 0 0 2 256: 52 1 2 | 1 0 3 512: 109 2 4 | 2 1 5 1024: 205 4 8 | 4 3 9 2048: 429 8 16 | 8 7 17 4096: 856 17 34 | 16 15 33 8192: 1668 33 67 | 32 31 64 16384: 1634 32 100 | 36 35 100 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: 2 0 0 | 0 0 0 2048: 4672 93 93 | 1 0 0 4096: 450 8 102 | 89 87 88 8192: 4 0 102 | 12 11 100 16384: 0 0 102 | 1 0 100 32768: 0 0 102 | 1 0 101 65536: 0 0 102 | 0 0 101 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-ffff9860c6aaa800.read_ahead_stats= snapshot_time 1763877313.408107689 secs.nsecs start_time 1763877256.979122639 secs.nsecs elapsed_time 56.428985050 secs.nsecs hits 74981 samples [pages] misses 5009 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 74982 samples [pages] failed_to_fast_read 5009 samples [pages] readahead_pages 5008 samples [pages] 1 15 74981