== sanity test 101a: check read-ahead for random reads === 19:51:18 (1785455478) nreads: 10000 file size: 96MB 180.854004s, 2.15211MB/s osc.lustre-OST0000-osc-ffff999486cd0000.rpc_stats= snapshot_time: 1785455690.140435207 secs.nsecs start_time: 1785455481.973583527 secs.nsecs elapsed_time: 208.166851680 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 | 0 0 0 32768: 0 0 0 | 2 100 100 osc.lustre-OST0001-osc-ffff999486cd0000.rpc_stats= snapshot_time: 1785455690.140518033 secs.nsecs start_time: 1785455481.973607573 secs.nsecs elapsed_time: 208.166910460 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: 1 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 3 0 0 | 1 3 10 16: 3847 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: 3852 100 100 | 27 96 96 2: 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: 3 0 0 | 0 0 14 32: 6 0 0 | 0 0 14 64: 11 0 0 | 0 0 14 128: 18 0 1 | 0 0 14 256: 37 0 2 | 0 0 14 512: 83 2 4 | 0 0 14 1024: 147 3 8 | 1 3 17 2048: 330 8 16 | 2 7 25 4096: 631 16 32 | 4 14 39 8192: 1251 32 65 | 8 28 67 16384: 1331 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: 0 0 0 | 0 0 0 4096: 316 8 8 | 0 0 0 8192: 1223 31 39 | 0 0 0 16384: 1483 38 78 | 1 3 3 32768: 769 19 98 | 1 3 7 65536: 146 3 102 | 21 75 82 131072: 5 0 102 | 5 17 100 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-ffff999486cd0000.read_ahead_stats= snapshot_time 1785455690.192659500 secs.nsecs start_time 1785455481.988848854 secs.nsecs elapsed_time 208.203810646 secs.nsecs hits 57705 samples [pages] misses 3852 samples [pages] readpage_not_consecutive 5936 samples [pages] zero_size_window 57706 samples [pages] failed_to_fast_read 3852 samples [pages] readahead_pages 3851 samples [pages] 1 15 57705