== sanity test 101a: check read-ahead for random reads === 22:25:43 (1788834343) nreads: 10000 file size: 96MB 131.135221s, 4.99759MB/s osc.lustre-OST0000-osc-ffff91d2c566f000.rpc_stats= snapshot_time: 1788834491.692098587 secs.nsecs start_time: 1788834344.801797641 secs.nsecs elapsed_time: 146.890300946 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: 2 0 0 | 0 0 0 2: 2 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 5038 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: 5044 100 100 | 100 100 100 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: 52 1 2 | 1 1 2 512: 107 2 4 | 2 2 4 1024: 207 4 8 | 4 4 8 2048: 429 8 16 | 8 8 16 4096: 855 16 33 | 16 16 32 8192: 1670 33 66 | 32 32 64 16384: 1669 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: 559 11 11 | 0 0 0 8192: 3229 64 75 | 3 3 3 16384: 1227 24 99 | 58 58 61 32768: 144 2 102 | 39 39 100 65536: 4 0 102 | 1 1 101 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 osc.lustre-OST0001-osc-ffff91d2c566f000.rpc_stats= snapshot_time: 1788834491.692241728 secs.nsecs start_time: 1788834344.801968837 secs.nsecs elapsed_time: 146.890272891 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 llite.lustre-ffff91d2c566f000.read_ahead_stats= snapshot_time 1788834491.706931639 secs.nsecs start_time 1788834344.822408795 secs.nsecs elapsed_time 146.884522844 secs.nsecs hits 75555 samples [pages] misses 5044 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75556 samples [pages] failed_to_fast_read 5044 samples [pages] readahead_pages 5042 samples [pages] 1 15 75555