== sanity test 101a: check read-ahead for random reads === 02:53:55 (1789023235) nreads: 10000 file size: 96MB 180.045006s, 2.86139MB/s osc.lustre-OST0000-osc-ffffa01f9177f800.rpc_stats= snapshot_time: 1789023436.116039600 secs.nsecs start_time: 1789023237.267973753 secs.nsecs elapsed_time: 198.848065847 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: 0 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 5163 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 1 3 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 1 3 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: 5166 100 100 | 25 92 92 2: 0 0 100 | 2 7 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 1 3 3 1: 0 0 0 | 0 0 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 4 0 0 | 0 0 3 32: 6 0 0 | 0 0 3 64: 16 0 0 | 0 0 3 128: 21 0 0 | 2 7 11 256: 45 0 1 | 0 0 11 512: 94 1 3 | 0 0 11 1024: 202 3 7 | 1 3 14 2048: 449 8 16 | 2 7 22 4096: 867 16 33 | 4 14 37 8192: 1673 32 65 | 8 29 66 16384: 1785 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: 0 0 0 | 0 0 0 4096: 190 3 3 | 0 0 0 8192: 2254 43 47 | 0 0 0 16384: 2277 44 91 | 0 0 0 32768: 540 10 101 | 5 18 18 65536: 26 0 102 | 18 66 85 131072: 0 0 102 | 4 14 100 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-ffffa01f9177f800.rpc_stats= snapshot_time: 1789023436.116188796 secs.nsecs start_time: 1789023237.268008045 secs.nsecs elapsed_time: 198.848180751 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-ffffa01f9177f800.read_ahead_stats= snapshot_time 1789023436.145032812 secs.nsecs start_time 1789023237.290922196 secs.nsecs elapsed_time 198.854110616 secs.nsecs hits 77440 samples [pages] misses 5166 samples [pages] readpage_not_consecutive 7857 samples [pages] zero_size_window 77440 samples [pages] failed_to_fast_read 5166 samples [pages] readahead_pages 5166 samples [pages] 3 15 77440