== sanity test 101a: check read-ahead for random reads === 22:22:07 (1767324127) nreads: 10000 file size: 96MB 101.479410s, 6.45806MB/s osc.lustre-OST0000-osc-ffff965bd3110000.rpc_stats= snapshot_time: 1767324242.471904967 secs.nsecs start_time: 1767324128.939979567 secs.nsecs elapsed_time: 113.531925400 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 7 7 2: 1 0 0 | 0 0 7 4: 4 0 0 | 0 0 7 8: 4 0 0 | 0 0 7 16: 6500 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: 6509 100 100 | 27 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 5 0 0 | 0 0 11 32: 8 0 0 | 0 0 11 64: 19 0 0 | 0 0 11 128: 31 0 1 | 0 0 11 256: 73 1 2 | 0 0 11 512: 132 2 4 | 0 0 11 1024: 258 3 8 | 1 3 14 2048: 555 8 16 | 2 7 22 4096: 1075 16 33 | 4 14 37 8192: 2154 33 66 | 8 29 66 16384: 2193 33 100 | 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: 312 4 4 | 0 0 0 4096: 3959 60 65 | 1 3 3 8192: 2235 34 99 | 1 3 7 16384: 155 2 102 | 1 3 11 32768: 2 0 102 | 22 81 92 65536: 0 0 102 | 2 7 100 131072: 0 0 102 | 0 0 100 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-ffff965bd3110000.rpc_stats= snapshot_time: 1767324242.472622122 secs.nsecs start_time: 1767324128.940012941 secs.nsecs elapsed_time: 113.532609181 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 | 0 0 0 4096: 0 0 0 | 1 33 33 8192: 0 0 0 | 2 66 100 llite.lustre-ffff965bd3110000.read_ahead_stats= snapshot_time 1767324242.480814455 secs.nsecs start_time 1767324128.952211660 secs.nsecs elapsed_time 113.528602795 secs.nsecs hits 97492 samples [pages] misses 6509 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 97492 samples [pages] failed_to_fast_read 6509 samples [pages] readahead_pages 6509 samples [pages] 1 15 97492