== sanity test 101a: check read-ahead for random reads === 07:57:43 (1790942263) nreads: 10000 file size: 96MB 180.070538s, 3.48333MB/s osc.lustre-OST0000-osc-ffff9ac804395000.rpc_stats= snapshot_time: 1790942465.097301510 secs.nsecs start_time: 1790942265.884924239 secs.nsecs elapsed_time: 199.212377271 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 | 1 100 100 osc.lustre-OST0001-osc-ffff9ac804395000.rpc_stats= snapshot_time: 1790942465.097495458 secs.nsecs start_time: 1790942265.884955921 secs.nsecs elapsed_time: 199.212539537 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: 1 0 0 | 0 0 0 4: 4 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 4847 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: 4858 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: 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: 50 1 2 | 1 1 2 512: 104 2 4 | 2 2 4 1024: 202 4 8 | 4 4 8 2048: 414 8 16 | 8 8 16 4096: 820 16 33 | 16 16 32 8192: 1605 33 66 | 32 32 64 16384: 1608 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: 40 0 0 | 0 0 0 8192: 2019 41 42 | 2 2 2 16384: 2268 46 89 | 41 41 43 32768: 612 12 101 | 44 44 87 65536: 33 0 102 | 13 13 100 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 llite.lustre-ffff9ac804395000.read_ahead_stats= snapshot_time 1790942465.109769211 secs.nsecs start_time 1790942265.927280831 secs.nsecs elapsed_time 199.182488380 secs.nsecs hits 72704 samples [pages] misses 4858 samples [pages] readpage_not_consecutive 9564 samples [pages] zero_size_window 72705 samples [pages] failed_to_fast_read 4858 samples [pages] readahead_pages 4857 samples [pages] 1 15 72704