== sanity test 101a: check read-ahead for random reads === 16:47:25 (1786481245) nreads: 10000 file size: 96MB 125.497172s, 5.22211MB/s osc.lustre-OST0000-osc-ffff89fd06b27000.rpc_stats= snapshot_time: 1786481394.209483957 secs.nsecs start_time: 1786481248.001157605 secs.nsecs elapsed_time: 146.208326352 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-ffff89fd06b27000.rpc_stats= snapshot_time: 1786481394.209556757 secs.nsecs start_time: 1786481248.001186813 secs.nsecs elapsed_time: 146.208369944 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: 3 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 5058 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 | 100 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5062 100 100 | 68 68 68 2: 0 0 100 | 21 21 89 3: 0 0 100 | 10 10 99 4: 0 0 100 | 1 1 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 4 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 16 0 0 | 0 0 1 128: 27 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 108 2 4 | 2 2 4 1024: 207 4 8 | 4 4 8 2048: 430 8 16 | 8 8 16 4096: 852 16 33 | 16 16 32 8192: 1680 33 66 | 32 32 64 16384: 1676 33 100 | 36 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: 1 0 0 | 0 0 0 4096: 818 16 16 | 0 0 0 8192: 3450 68 84 | 2 2 2 16384: 694 13 98 | 11 11 13 32768: 159 3 101 | 20 20 33 65536: 48 0 102 | 27 27 60 131072: 10 0 102 | 27 27 87 262144: 1 0 102 | 11 11 98 524288: 0 0 102 | 2 2 100 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-ffff89fd06b27000.read_ahead_stats= snapshot_time 1786481394.224542795 secs.nsecs start_time 1786481248.010216567 secs.nsecs elapsed_time 146.214326228 secs.nsecs hits 75858 samples [pages] misses 5062 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75859 samples [pages] failed_to_fast_read 5062 samples [pages] readahead_pages 5059 samples [pages] 5 15 75858