== sanity test 101a: check read-ahead for random reads === 07:57:40 (1787745460) nreads: 10000 file size: 96MB 180.551886s, 2.98802MB/s osc.lustre-OST0000-osc-ffff8fa8517d6800.rpc_stats= snapshot_time: 1787745664.157862447 secs.nsecs start_time: 1787745462.418568366 secs.nsecs elapsed_time: 201.739294081 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: 2 0 0 | 0 0 0 4: 3 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 4169 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: 4175 100 100 | 98 98 98 2: 0 0 100 | 2 2 100 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: 3 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 14 0 0 | 0 0 1 128: 21 0 1 | 0 0 1 256: 43 1 2 | 1 1 2 512: 93 2 4 | 2 2 4 1024: 161 3 8 | 4 4 8 2048: 367 8 17 | 8 8 16 4096: 696 16 33 | 16 16 32 8192: 1388 33 66 | 32 32 64 16384: 1380 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: 0 0 0 | 0 0 0 4096: 46 1 1 | 0 0 0 8192: 1292 30 32 | 2 2 2 16384: 2044 48 81 | 14 14 16 32768: 812 19 100 | 66 66 82 65536: 79 1 102 | 18 18 100 131072: 0 0 102 | 1 1 101 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 osc.lustre-OST0001-osc-ffff8fa8517d6800.rpc_stats= snapshot_time: 1787745664.158409934 secs.nsecs start_time: 1787745462.418603193 secs.nsecs elapsed_time: 201.739806741 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 | 1 100 100 llite.lustre-ffff8fa8517d6800.read_ahead_stats= snapshot_time 1787745664.200789395 secs.nsecs start_time 1787745462.430528197 secs.nsecs elapsed_time 201.770261198 secs.nsecs hits 62525 samples [pages] misses 4175 samples [pages] readpage_not_consecutive 8227 samples [pages] zero_size_window 62526 samples [pages] failed_to_fast_read 4175 samples [pages] readahead_pages 4174 samples [pages] 1 15 62525