== sanity test 101a: check read-ahead for random reads === 17:41:21 (1785966081) nreads: 10000 file size: 96MB 180.675786s, 2.69579MB/s osc.lustre-OST0000-osc-ffff8e01328f6000.rpc_stats= snapshot_time: 1785966287.149529406 secs.nsecs start_time: 1785966084.031788063 secs.nsecs elapsed_time: 203.117741343 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 osc.lustre-OST0001-osc-ffff8e01328f6000.rpc_stats= snapshot_time: 1785966287.150893650 secs.nsecs start_time: 1785966084.031854449 secs.nsecs elapsed_time: 203.119039201 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 | 0 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 4914 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4917 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 4 0 0 | 0 0 4 32: 6 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 21 0 1 | 0 0 4 256: 50 1 2 | 0 0 4 512: 102 2 4 | 0 0 4 1024: 193 3 8 | 1 4 8 2048: 423 8 16 | 2 8 16 4096: 831 16 33 | 4 16 32 8192: 1581 32 65 | 8 32 64 16384: 1687 34 100 | 9 36 100 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: 66 1 1 | 0 0 0 8192: 2142 43 44 | 0 0 0 16384: 2173 44 89 | 0 0 0 32768: 619 12 101 | 1 4 4 65536: 32 0 102 | 16 64 68 131072: 0 0 102 | 8 32 100 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-ffff8e01328f6000.read_ahead_stats= snapshot_time 1785966287.178106821 secs.nsecs start_time 1785966084.057876009 secs.nsecs elapsed_time 203.120230812 secs.nsecs hits 73701 samples [pages] misses 4917 samples [pages] readpage_not_consecutive 7428 samples [pages] zero_size_window 73702 samples [pages] failed_to_fast_read 4917 samples [pages] readahead_pages 4916 samples [pages] 6 15 73701