== sanity test 101a: check read-ahead for random reads === 04:10:08 (1773735008) nreads: 10000 file size: 96MB 180.442011s, 1.8879MB/s osc.lustre-OST0000-osc-ffff894944bdd800.rpc_stats= snapshot_time: 1773735229.152061600 secs.nsecs start_time: 1773735010.887998042 secs.nsecs elapsed_time: 218.264063558 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-ffff894944bdd800.rpc_stats= snapshot_time: 1773735229.152131026 secs.nsecs start_time: 1773735010.888068866 secs.nsecs elapsed_time: 218.264062160 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: 1 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 2667 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 1 0 0 256: 0 0 100 | 100 99 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 2669 100 100 | 100 99 99 2: 0 0 100 | 1 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 2 0 0 | 1 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: 3 0 0 | 0 0 0 32: 4 0 0 | 0 0 0 64: 9 0 0 | 0 0 0 128: 17 0 1 | 0 0 0 256: 28 1 2 | 1 0 1 512: 57 2 4 | 2 1 3 1024: 105 3 8 | 4 3 7 2048: 240 8 17 | 8 7 15 4096: 461 17 34 | 16 15 31 8192: 904 33 68 | 32 31 63 16384: 839 31 100 | 37 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: 0 0 0 | 0 0 0 8192: 179 6 6 | 0 0 0 16384: 1129 42 49 | 0 0 0 32768: 1247 46 95 | 49 48 48 65536: 177 6 102 | 48 47 96 131072: 0 0 102 | 6 5 101 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-ffff894944bdd800.read_ahead_stats= snapshot_time 1773735229.191258802 secs.nsecs start_time 1773735010.944074241 secs.nsecs elapsed_time 218.247184561 secs.nsecs hits 39990 samples [pages] misses 2669 samples [pages] readpage_not_consecutive 5196 samples [pages] zero_size_window 39990 samples [pages] failed_to_fast_read 2669 samples [pages] readahead_pages 2669 samples [pages] 2 15 39990