== sanity test 101a: check read-ahead for random reads === 01:40:59 (1761284459) nreads: 10000 file size: 96MB 96.909146s, 6.76262MB/s osc.lustre-OST0000-osc-ffff901cd0c08800.rpc_stats= snapshot_time: 1761284565.605857713 secs.nsecs start_time: 1761284459.977341833 secs.nsecs elapsed_time: 105.628515880 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-ffff901cd0c08800.rpc_stats= snapshot_time: 1761284565.605932507 secs.nsecs start_time: 1761284459.977413030 secs.nsecs elapsed_time: 105.628519477 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: 2 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 5033 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: 5032 99 99 | 100 100 100 2: 5 0 100 | 0 0 100 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: 26 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 107 2 4 | 2 2 4 1024: 208 4 8 | 4 4 8 2048: 428 8 16 | 8 8 16 4096: 856 16 33 | 16 16 32 8192: 1673 33 67 | 32 32 64 16384: 1657 32 100 | 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: 56 1 1 | 0 0 0 4096: 1995 39 40 | 3 3 3 8192: 2532 50 90 | 72 72 75 16384: 536 10 101 | 25 25 100 32768: 35 0 102 | 1 1 101 65536: 1 0 102 | 0 0 101 131072: 0 0 102 | 0 0 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 llite.lustre-ffff901cd0c08800.read_ahead_stats= snapshot_time 1761284565.614517961 secs.nsecs start_time 1761284459.984761099 secs.nsecs elapsed_time 105.629756862 secs.nsecs hits 75484 samples [pages] misses 5037 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75484 samples [pages] failed_to_fast_read 5037 samples [pages] readahead_pages 5037 samples [pages] 1 15 75484