== sanity test 101a: check read-ahead for random reads === 18:25:28 (1787783128) nreads: 10000 file size: 96MB 180.643616s, 3.0304MB/s osc.lustre-OST0000-osc-ffff8a77430f8000.rpc_stats= snapshot_time: 1787783331.135445473 secs.nsecs start_time: 1787783129.866231135 secs.nsecs elapsed_time: 201.269214338 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 3 3 2: 1 0 0 | 0 0 3 4: 1 0 0 | 0 0 3 8: 4 0 0 | 1 3 7 16: 5491 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5496 99 99 | 26 96 96 2: 1 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 4 0 0 | 0 0 11 32: 6 0 0 | 0 0 11 64: 18 0 0 | 0 0 11 128: 24 0 1 | 0 0 11 256: 52 0 1 | 0 0 11 512: 114 2 4 | 0 0 11 1024: 211 3 7 | 1 3 14 2048: 471 8 16 | 2 7 22 4096: 907 16 32 | 4 14 37 8192: 1794 32 65 | 8 29 66 16384: 1892 34 100 | 9 33 100 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: 3 0 0 | 0 0 0 4096: 497 9 9 | 0 0 0 8192: 2577 46 55 | 0 0 0 16384: 1968 35 91 | 1 3 3 32768: 546 9 101 | 2 7 11 65536: 35 0 102 | 19 70 81 131072: 0 0 102 | 4 14 96 262144: 0 0 102 | 1 3 100 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-ffff8a77430f8000.rpc_stats= snapshot_time: 1787783331.137257266 secs.nsecs start_time: 1787783129.866264538 secs.nsecs elapsed_time: 201.270992728 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 | 3 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 3 100 100 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 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 2 66 66 16384: 0 0 0 | 0 0 66 32768: 0 0 0 | 0 0 66 65536: 0 0 0 | 1 33 100 llite.lustre-ffff8a77430f8000.read_ahead_stats= snapshot_time 1787783331.172776939 secs.nsecs start_time 1787783129.884894960 secs.nsecs elapsed_time 201.287881979 secs.nsecs hits 82370 samples [pages] misses 5497 samples [pages] readpage_not_consecutive 8348 samples [pages] zero_size_window 82370 samples [pages] failed_to_fast_read 5497 samples [pages] readahead_pages 5497 samples [pages] 1 15 82370