== sanity test 101a: check read-ahead for random reads === 21:12:41 (1763345561) nreads: 10000 file size: 96MB 143.095991s, 4.57986MB/s osc.lustre-OST0000-osc-ffff997044f18800.rpc_stats= snapshot_time: 1763345718.740770916 secs.nsecs start_time: 1763345562.594215366 secs.nsecs elapsed_time: 156.146555550 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 | 2 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 50 50 2: 0 0 0 | 1 50 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 | 2 100 100 osc.lustre-OST0001-osc-ffff997044f18800.rpc_stats= snapshot_time: 1763345718.740868823 secs.nsecs start_time: 1763345562.594520766 secs.nsecs elapsed_time: 156.146348057 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 7 7 2: 3 0 0 | 0 0 7 4: 2 0 0 | 0 0 7 8: 7 0 0 | 1 3 10 16: 6555 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6549 99 99 | 26 92 92 2: 19 0 100 | 1 3 96 3: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 5 0 0 | 0 0 14 32: 7 0 0 | 0 0 14 64: 22 0 0 | 0 0 14 128: 31 0 1 | 0 0 14 256: 70 1 2 | 0 0 14 512: 135 2 4 | 0 0 14 1024: 260 3 8 | 1 3 17 2048: 554 8 16 | 2 7 25 4096: 1091 16 33 | 4 14 39 8192: 2149 32 65 | 8 28 67 16384: 2240 34 100 | 9 32 100 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: 1 0 0 | 0 0 0 4096: 1427 21 21 | 0 0 0 8192: 4119 62 84 | 1 3 3 16384: 1133 17 101 | 1 3 7 32768: 41 0 102 | 12 42 50 65536: 2 0 102 | 13 46 96 131072: 0 0 102 | 1 3 100 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 llite.lustre-ffff997044f18800.read_ahead_stats= snapshot_time 1763345718.756026726 secs.nsecs start_time 1763345562.604431655 secs.nsecs elapsed_time 156.151595071 secs.nsecs hits 98312 samples [pages] misses 6568 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 98313 samples [pages] failed_to_fast_read 6568 samples [pages] readahead_pages 6567 samples [pages] 1 15 98312