== sanity test 101a: check read-ahead for random reads === 16:19:36 (1786306776) nreads: 10000 file size: 96MB 180.714523s, 3.1953MB/s osc.lustre-OST0000-osc-ffff99239088e000.rpc_stats= snapshot_time: 1786306981.076831513 secs.nsecs start_time: 1786306778.181601348 secs.nsecs elapsed_time: 202.895230165 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: 6 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 5826 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: 5835 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: 5 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 20 0 0 | 0 0 4 128: 25 0 1 | 0 0 4 256: 59 1 2 | 0 0 4 512: 124 2 4 | 0 0 4 1024: 221 3 7 | 1 4 8 2048: 490 8 16 | 2 8 16 4096: 964 16 32 | 4 16 32 8192: 1893 32 65 | 8 32 64 16384: 2023 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: 431 7 7 | 0 0 0 8192: 3304 56 64 | 0 0 0 16384: 1819 31 95 | 0 0 0 32768: 371 6 101 | 0 0 0 65536: 48 0 102 | 23 92 92 131072: 0 0 102 | 2 8 100 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-ffff99239088e000.rpc_stats= snapshot_time: 1786306981.077220054 secs.nsecs start_time: 1786306778.181634886 secs.nsecs elapsed_time: 202.895585168 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 | 1 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 1 100 100 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 | 1 100 100 llite.lustre-ffff99239088e000.read_ahead_stats= snapshot_time 1786306981.094750838 secs.nsecs start_time 1786306778.200430619 secs.nsecs elapsed_time 202.894320219 secs.nsecs hits 87387 samples [pages] misses 5835 samples [pages] readpage_not_consecutive 8806 samples [pages] zero_size_window 87387 samples [pages] failed_to_fast_read 5835 samples [pages] readahead_pages 5835 samples [pages] 2 15 87387