== sanity test 101a: check read-ahead for random reads === 22:51:36 (1789267896) nreads: 10000 file size: 96MB 180.778184s, 2.90126MB/s osc.lustre-OST0000-osc-ffff98cd42db0000.rpc_stats= snapshot_time: 1789268095.130379368 secs.nsecs start_time: 1789267898.577206638 secs.nsecs elapsed_time: 196.553172730 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 | 3 10 10 2: 0 0 0 | 0 0 10 4: 5 0 0 | 0 0 10 8: 2 0 0 | 0 0 10 16: 5252 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5260 100 100 | 25 89 89 2: 0 0 100 | 2 7 96 3: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 4 0 0 | 0 0 14 32: 7 0 0 | 0 0 14 64: 15 0 0 | 0 0 14 128: 22 0 1 | 0 0 14 256: 53 1 2 | 0 0 14 512: 110 2 4 | 0 0 14 1024: 201 3 7 | 1 3 17 2048: 453 8 16 | 2 7 25 4096: 868 16 33 | 4 14 39 8192: 1727 32 65 | 8 28 67 16384: 1795 34 100 | 9 32 100 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: 112 2 2 | 0 0 0 8192: 2384 45 47 | 0 0 0 16384: 2341 44 91 | 2 7 7 32768: 531 10 102 | 5 17 25 65536: 15 0 102 | 18 64 89 131072: 0 0 102 | 3 10 100 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-ffff98cd42db0000.rpc_stats= snapshot_time: 1789268095.130773717 secs.nsecs start_time: 1789267898.577239363 secs.nsecs elapsed_time: 196.553534354 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 50 50 2: 0 0 0 | 0 0 50 4: 0 0 0 | 0 0 50 8: 0 0 0 | 1 50 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 50 50 2: 0 0 0 | 1 50 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 | 2 100 100 llite.lustre-ffff98cd42db0000.read_ahead_stats= snapshot_time 1789268095.162774971 secs.nsecs start_time 1789267898.585043548 secs.nsecs elapsed_time 196.577731423 secs.nsecs hits 78757 samples [pages] misses 5260 samples [pages] readpage_not_consecutive 7998 samples [pages] zero_size_window 78758 samples [pages] failed_to_fast_read 5260 samples [pages] readahead_pages 5259 samples [pages] 2 15 78757